moved on to v0.11.6

bla

remove unused restart function

add allert dialog and add time to filename

.github/CONTRIBUTING.md

@@ -32,7 +32,7 @@ Do not report crashes in the GitHub issue tracker. NewPipe has an automated cras
 * Please test (compile and run) your code before you submit changes! Ideally, provide test feedback in the PR description. Untested code will **not** be merged!
 * Try to figure out yourself why builds on our CI fail.
 * Make sure your PR is up-to-date with the rest of the code. Often, a simple click on "Update branch" will do the job, but if not, you are asked to merge the master branch manually and resolve the problems on your own. That will make the maintainers' jobs way easier.
-* Please show intention to maintain your features and code after you contributed it. Unmaintained code is a hassle for the core developers, and just adds work. If you do not intend to maintain features you contributed, please think again about sumission, or clearly state that in the description of your PR.
+* Please show intention to maintain your features and code after you contributed it. Unmaintained code is a hassle for the core developers, and just adds work. If you do not intend to maintain features you contributed, please think again about submission, or clearly state that in the description of your PR.
 * Respond yourselves if someone requests changes or otherwise raises issues about your PRs.
 * Check if your contributions align with the [fdroid inclusion guidelines](https://f-droid.org/en/docs/Inclusion_Policy/).
 * Check if your submission can be build with the current fdroid build server setup.

.github/PULL_REQUEST_TEMPLATE.md

@@ -1 +1 @@
-- [ ] I carefully reed the [contribution guidelines](https://github.com/TeamNewPipe/NewPipe/blob/HEAD/.github/CONTRIBUTING.md) and agree to them.
+- [ ] I carefully read the [contribution guidelines](https://github.com/TeamNewPipe/NewPipe/blob/HEAD/.github/CONTRIBUTING.md) and agree to them.

.gitignore

@@ -10,3 +10,4 @@
 gradle.properties
 *~
 .weblate
+*.class

.travis.yml

@@ -5,11 +5,13 @@ android:
   components:
     # The BuildTools version used by NewPipe
     - tools
-    - build-tools-26.0.1
+    - build-tools-27.0.1
 
     # The SDK version used to compile NewPipe
-    - android-26
+    - android-27
 
+before_install: 
+  - yes | sdkmanager "platforms;android-27"
 script: ./gradlew -Dorg.gradle.jvmargs=-Xmx1536m assembleDebug lintDebug testDebugUnitTest
 
 licenses:

CheckTranslations.java

@@ -0,0 +1,170 @@
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileReader;
+import java.io.IOException;
+import java.util.regex.*;
+import java.util.Arrays;
+import java.util.List;
+import java.util.ArrayList;
+import java.nio.file.Files;
+import java.nio.charset.Charset;
+
+public final class CheckTranslations {
+
+    private static boolean debug = false;
+    private static boolean plurals = false;
+    private static boolean empty = false;
+    private static boolean remove = false;
+    private static int checks = 0;
+    private static int matches = 0;
+    private static int changes = 0;
+    private static Pattern p, pb, pe, e, o;
+
+    /**
+     * Search translated strings.xml files for empty item / plural tags
+     * and remove them.
+     * @param args directories which contain string.xml files (in any subdirectory)
+     *             -e option to find all empty string tags
+     *             -p option to find all empty plurals and item tags
+     *             -r option to remove all occurrences from the files
+     *             -d option to see more details
+     */
+    public static void main(String[] args) {
+        if (args.length < 1 || (args[0].equals("-d") && args.length < 2)) {  
+            System.out.println("Not enough arguments");
+            return;
+        }
+        for (int i = 0; i < args.length; i++) {
+            switch (args[i]) {
+                case "-d":
+                    debug = true;
+                    break;
+                case "-p":
+                    plurals = true;
+                    break;
+                case "-e":
+                    empty = true;
+                    break;
+                case "-r":
+                    remove = true;
+                    break;
+            }
+        }
+        
+        if (!plurals && !empty) {
+            plurals = true;
+            empty = true;
+        }
+
+        p = Pattern.compile("(<item quantity=\")(zero|one|two|three|few|many|other)(\"></item>|\"/>)");
+        pb = Pattern.compile("(<plurals[\\sa-zA-Z=\"]*>)");
+        pe = Pattern.compile("(</plurals>)");
+        e = Pattern.compile("(<string[\\sa-z_\\\"=]*)((><\\/string>|\\/>){1})");
+        o = Pattern.compile("(<item quantity=\"other\">)[^</>]*(<\\/item>)");
+
+        for (int i = 0; i < args.length; i++) {
+            if (!args[i].equals("-d") && !args[i].equals("-p") && !args[i].equals("-e") && !args[i].equals("-r")) {
+                File f = new File(args[i]);
+                if (f.exists() && !f.isDirectory()) {
+                    checkFile(f);
+                } else if (f.isDirectory()) {
+                    checkFiles(f.listFiles());
+                } else {
+                    System.out.println("'" + args[i] + "' does not exist!");
+                }
+            }
+        }
+
+        System.out.println(checks + " files were checked.");
+        System.out.println(matches + " corrupt lines detected.");
+        if (remove) {
+            System.out.println(matches + " corrupt lines removed and " + changes + " lines fixed.");
+        }
+    }
+
+
+    private static void checkFiles(File[] f) {
+        for (int i = 0; i < f.length; i++) {
+            if (f[i].exists() && !f[i].isDirectory()) {
+                if (f[i].toString().contains("strings.xml")) {
+                    checkFile(f[i]);
+                }
+            } else if (f[i].isDirectory()) {
+                checkFiles(f[i].listFiles());
+            }
+        }
+    }
+
+    private static void checkFile(File f) {
+        // Do not check our original English strings to cause no unwanted changes
+        // Btw. there should not be empty plural/item tags
+        if (f.toString().contains("values/strings.xml")) {
+            return;
+        }
+        if (debug) System.out.println("Checking " + f.toString());
+        checks++;
+
+
+        List<String> lines = new ArrayList<String>();
+        boolean checkFailed = false;
+        boolean otherDetected = false;
+        boolean inPlurals = false;
+        try (BufferedReader br = new BufferedReader(new FileReader(f))) {
+            String line;
+            int ln = 0;
+            while ((line = br.readLine()) != null) {
+                ln++;
+                if (plurals && p.matcher(line).find()) {
+                    matches++;
+                    if (debug) System.out.println("    Line " + ln + " was " + ((remove) ? "removed" : "detected") + ": '" + line + "'");
+                    checkFailed = true;
+                } else if (empty && e.matcher(line).find()) {
+                    matches++;
+                    checkFailed = true;
+                    if (debug) System.out.println("    Line " + ln + " was " + ((remove) ? "removed" : "detected") + ": '" + line + "'");
+                } else {
+                    if (remove) lines.add(line);
+                }
+            }
+            br.close();
+            int pluralsLine = 0;
+            for (int i = 0; i < lines.size(); i++) {
+                if (o.matcher(lines.get(i)).find()) {
+                    otherDetected = true;
+                }
+                if (plurals && pb.matcher(lines.get(i)).find()) {
+                    inPlurals = true;
+                    pluralsLine = i;
+                } else if (plurals && pe.matcher(lines.get(i)).find()) {
+                    inPlurals = false;
+                    if (!otherDetected) {
+                        boolean b = false;
+                        check: for(int j = pluralsLine; j < i; j++) {
+                            if (lines.get(j).contains("many")) {
+                                b = true;
+                                pluralsLine = j;
+                                break check;
+                            }
+                        }
+                        if (remove && b) {
+                            if (debug) System.out.println("    Line " + (pluralsLine + 1) + " was " + ((remove) ? "changed" : "detected") + ": '" + lines.get(pluralsLine) + "'");
+                            lines.set(pluralsLine, lines.get(pluralsLine).replace("many", "other"));
+                            changes++;
+                            checkFailed = true;
+                        } else if (debug) {
+                            if (debug) System.out.println("    WARNING: Line " + (i + 1) + " - No <item quantity=\"other\"> found!");
+                        }
+                    }
+                    otherDetected = false;
+                }
+                 
+            }
+            if (remove && checkFailed) {
+                Files.write(f.toPath(), lines, Charset.forName("UTF-8"));
+            }
+        } catch (IOException e) {
+            System.out.println(e);
+        }
+    }
+}
+

README.md

@@ -13,21 +13,22 @@
 </p>
 <hr />
 <p align="center"><a href="#screenshots">Screenshots</a> &bull; <a href="#description">Description</a> &bull; <a href="#features">Features</a> &bull; <a href="#contribution">Contribution</a> &bull; <a href="#donate">Donate</a> &bull; <a href="#license">License</a></p>
+<p align="center"><a href="https://newpipe.schabi.org">Website</a> &bull; <a href="https://newpipe.schabi.org/blog/">Blog</a>  &bull; <a href="https://newpipe.schabi.org/press/">Press</a></p>
 <hr />
 WARNING: PUTTING NEWPIPE OR ANY FORK OF IT INTO GOOGLE PLAYSTORE VIOLATES THEIR TERMS OF CONDITIONS.
 
 ## Screenshots
 
-[<img src="screenshots/shot_1.png" width=160>](screenshots/shot_1.png)
-[<img src="screenshots/shot_2.png" width=160>](screenshots/shot_2.png)
-[<img src="screenshots/shot_3.png" width=160>](screenshots/shot_3.png)
-[<img src="screenshots/shot_4.png" width=160>](screenshots/shot_4.png)
-[<img src="screenshots/shot_5.png" width=160>](screenshots/shot_5.png)
-[<img src="screenshots/shot_6.png" width=160>](screenshots/shot_6.png)
-[<img src="screenshots/shot_7.png" width=160>](screenshots/shot_7.png)
-[<img src="screenshots/shot_8.png" width=160>](screenshots/shot_8.png)
-[<img src="screenshots/shot_9.png" width=160>](screenshots/shot_9.png)
-[<img src="screenshots/shot_10.png" width=160>](screenshots/shot_10.png)
+[<img src="fastlane/metadata/android/en-US/images/phoneScreenshots/shot_1.png" width=160>](fastlane/metadata/android/en-US/images/phoneScreenshots/shot_1.png)
+[<img src="fastlane/metadata/android/en-US/images/phoneScreenshots/shot_2.png" width=160>](fastlane/metadata/android/en-US/images/phoneScreenshots/shot_2.png)
+[<img src="fastlane/metadata/android/en-US/images/phoneScreenshots/shot_3.png" width=160>](fastlane/metadata/android/en-US/images/phoneScreenshots/shot_3.png)
+[<img src="fastlane/metadata/android/en-US/images/phoneScreenshots/shot_4.png" width=160>](fastlane/metadata/android/en-US/images/phoneScreenshots/shot_4.png)
+[<img src="fastlane/metadata/android/en-US/images/phoneScreenshots/shot_5.png" width=160>](fastlane/metadata/android/en-US/images/phoneScreenshots/shot_5.png)
+[<img src="fastlane/metadata/android/en-US/images/phoneScreenshots/shot_6.png" width=160>](fastlane/metadata/android/en-US/images/phoneScreenshots/shot_6.png)
+[<img src="fastlane/metadata/android/en-US/images/phoneScreenshots/shot_7.png" width=160>](fastlane/metadata/android/en-US/images/phoneScreenshots/shot_7.png)
+[<img src="fastlane/metadata/android/en-US/images/phoneScreenshots/shot_8.png" width=160>](fastlane/metadata/android/en-US/images/phoneScreenshots/shot_8.png)
+[<img src="fastlane/metadata/android/en-US/images/phoneScreenshots/shot_9.png" width=160>](fastlane/metadata/android/en-US/images/phoneScreenshots/shot_9.png)
+[<img src="fastlane/metadata/android/en-US/images/phoneScreenshots/shot_10.png" width=160>](fastlane/metadata/android/en-US/images/phoneScreenshots/shot_10.png)
 
 ## Description
 

app/build.gradle

@@ -1,15 +1,15 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 26
-    buildToolsVersion '26.0.1'
+    compileSdkVersion 27
+    buildToolsVersion '27.0.1'
 
     defaultConfig {
         applicationId "org.schabi.newpipe"
         minSdkVersion 15
-        targetSdkVersion 26
-        versionCode 41
-        versionName "0.11.0"
+        targetSdkVersion 27
+        versionCode 47
+        versionName "0.11.6"
 
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
         vectorDrawables.useSupportLibrary = true
@@ -27,6 +27,10 @@ android {
             applicationIdSuffix ".debug"
         }
         beta {
+            minifyEnabled true
+            shrinkResources true
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+
             applicationIdSuffix ".beta"
         }
     }
@@ -38,48 +42,51 @@ android {
         abortOnError false
     }
     compileOptions {
-        sourceCompatibility JavaVersion.VERSION_1_7
-        targetCompatibility JavaVersion.VERSION_1_7
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
     }
 }
 
+ext {
+    supportLibVersion = '27.0.2'
+}
 dependencies {
-    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2') {
+    androidTestImplementation('com.android.support.test.espresso:espresso-core:2.2.2') {
         exclude module: 'support-annotations'
     }
 
-    compile 'com.github.TeamNewPipe:NewPipeExtractor:b9d0941'
+    implementation 'com.github.TeamNewPipe:NewPipeExtractor:7fd21ec08581d'
 
-    testCompile 'junit:junit:4.12'
-    testCompile 'org.mockito:mockito-core:1.10.19'
+    testImplementation 'junit:junit:4.12'
+    testImplementation 'org.mockito:mockito-core:1.10.19'
 
-    compile 'com.android.support:appcompat-v7:26.0.1'
-    compile 'com.android.support:support-v4:26.0.1'
-    compile 'com.android.support:design:26.0.1'
-    compile 'com.android.support:recyclerview-v7:26.0.1'
-    compile 'com.android.support:preference-v14:26.0.1'
+    implementation "com.android.support:appcompat-v7:$supportLibVersion"
+    implementation "com.android.support:support-v4:$supportLibVersion"
+    implementation "com.android.support:design:$supportLibVersion"
+    implementation "com.android.support:recyclerview-v7:$supportLibVersion"
+    implementation "com.android.support:preference-v14:$supportLibVersion"
 
-    compile 'com.google.code.gson:gson:2.7'
-    compile 'ch.acra:acra:4.9.0'
+    implementation 'com.google.code.gson:gson:2.8.2'
+    implementation 'ch.acra:acra:4.9.2'
 
-    compile 'com.nostra13.universalimageloader:universal-image-loader:1.9.5'
-    compile 'de.hdodenhof:circleimageview:2.1.0'
-    compile 'com.github.nirhart:parallaxscroll:1.0'
-    compile 'com.nononsenseapps:filepicker:3.0.1'
-    compile 'com.google.android.exoplayer:exoplayer:r2.5.4'
+    implementation 'com.nostra13.universalimageloader:universal-image-loader:1.9.5'
+    implementation 'de.hdodenhof:circleimageview:2.2.0'
+    implementation 'com.github.nirhart:ParallaxScroll:dd53d1f9d1'
+    implementation 'com.nononsenseapps:filepicker:3.0.1'
+    implementation 'com.google.android.exoplayer:exoplayer:r2.5.4'
 
-    debugCompile 'com.facebook.stetho:stetho:1.5.0'
-    debugCompile 'com.facebook.stetho:stetho-urlconnection:1.5.0'
-    debugCompile 'com.android.support:multidex:1.0.1'
+    debugImplementation 'com.facebook.stetho:stetho:1.5.0'
+    debugImplementation 'com.facebook.stetho:stetho-urlconnection:1.5.0'
+    debugImplementation 'com.android.support:multidex:1.0.2'
 
-    compile 'io.reactivex.rxjava2:rxjava:2.1.2'
-    compile 'io.reactivex.rxjava2:rxandroid:2.0.1'
-    compile 'com.jakewharton.rxbinding2:rxbinding:2.0.0'
+    implementation 'io.reactivex.rxjava2:rxjava:2.1.7'
+    implementation 'io.reactivex.rxjava2:rxandroid:2.0.1'
+    implementation 'com.jakewharton.rxbinding2:rxbinding:2.0.0'
 
-    compile 'android.arch.persistence.room:runtime:1.0.0-alpha8'
-    compile 'android.arch.persistence.room:rxjava2:1.0.0-alpha8'
-    annotationProcessor 'android.arch.persistence.room:compiler:1.0.0-alpha8'
+    implementation 'android.arch.persistence.room:runtime:1.0.0'
+    implementation 'android.arch.persistence.room:rxjava2:1.0.0'
+    annotationProcessor 'android.arch.persistence.room:compiler:1.0.0'
 
-    compile 'frankiesardo:icepick:3.2.0'
-    provided 'frankiesardo:icepick-processor:3.2.0'
+    implementation 'frankiesardo:icepick:3.2.0'
+    annotationProcessor 'frankiesardo:icepick-processor:3.2.0'
 }

app/src/main/AndroidManifest.xml

@@ -16,7 +16,7 @@
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
         android:logo="@mipmap/ic_launcher"
-        android:theme="@style/DarkTheme"
+        android:theme="@style/OpeningTheme"
         tools:ignore="AllowBackup">
         <activity
             android:name=".MainActivity"
@@ -31,7 +31,7 @@
         <activity
             android:name=".player.old.PlayVideoActivity"
             android:configChanges="orientation|keyboardHidden|screenSize"
-            android:theme="@style/VideoPlayerTheme"
+            android:theme="@style/OldVideoPlayerTheme"
             tools:ignore="UnusedAttribute"/>
 
         <service
@@ -56,8 +56,7 @@
             android:name=".player.MainVideoPlayer"
             android:configChanges="keyboard|keyboardHidden|orientation|screenSize"
             android:label="@string/app_name"
-            android:launchMode="singleTask"
-            android:theme="@style/PlayerTheme"/>
+            android:launchMode="singleTask"/>
 
         <activity
             android:name=".settings.SettingsActivity"
@@ -124,7 +123,7 @@
         <activity
             android:name=".RouterActivity"
             android:taskAffinity=""
-            android:theme="@android:style/Theme.NoDisplay">
+            android:theme="@style/RouterActivityThemeDark">
             <intent-filter>
                 <action android:name="android.intent.action.VIEW"/>
                 <action android:name="android.media.action.MEDIA_PLAY_FROM_SEARCH"/>
@@ -175,17 +174,21 @@
             </intent-filter>
             <intent-filter>
                 <action android:name="android.intent.action.SEND"/>
-
                 <category android:name="android.intent.category.DEFAULT"/>
-
                 <data android:mimeType="text/plain"/>
             </intent-filter>
         </activity>
+
+        <service
+            android:name=".RouterPlayerActivity$FetcherService"
+            android:exported="false"/>
+
         <activity
-            android:name=".RouterPopupActivity"
-            android:label="@string/popup_mode_share_menu_title"
+            android:name=".RouterPlayerActivity"
+            android:excludeFromRecents="true"
+            android:label="@string/preferred_player_share_menu_title"
             android:taskAffinity=""
-            android:theme="@android:style/Theme.NoDisplay">
+            android:theme="@style/RouterActivityThemeDark">
             <intent-filter>
                 <action android:name="android.intent.action.VIEW"/>
                 <action android:name="android.media.action.MEDIA_PLAY_FROM_SEARCH"/>
@@ -204,6 +207,11 @@
                 <data android:pathPrefix="/embed/"/>
                 <data android:pathPrefix="/watch"/>
                 <data android:pathPrefix="/attribution_link"/>
+                <!-- channel prefix -->
+                <data android:pathPrefix="/channel/"/>
+                <data android:pathPrefix="/user/"/>
+                <!-- playlist prefix -->
+                <data android:pathPrefix="/playlist"/>
             </intent-filter>
             <intent-filter>
                 <action android:name="android.intent.action.VIEW"/>

app/src/main/java/org/schabi/newpipe/App.java

@@ -1,9 +1,12 @@
 package org.schabi.newpipe;
 
+import android.app.AlarmManager;
 import android.app.Application;
 import android.app.NotificationChannel;
 import android.app.NotificationManager;
+import android.app.PendingIntent;
 import android.content.Context;
+import android.content.Intent;
 import android.os.Build;
 import android.util.Log;
 
@@ -116,7 +119,6 @@ public class App extends Application {
         });
     }
 
-
     private void initACRA() {
         try {
             final ACRAConfiguration acraConfig = new ConfigurationBuilder(this)
@@ -149,4 +151,5 @@ public class App extends Application {
         NotificationManager mNotificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
         mNotificationManager.createNotificationChannel(mChannel);
     }
+
 }

app/src/main/java/org/schabi/newpipe/BaseFragment.java

@@ -77,17 +77,6 @@ public abstract class BaseFragment extends Fragment {
     protected void initListeners() {
     }
 
-    /*//////////////////////////////////////////////////////////////////////////
-    // Utils
-    //////////////////////////////////////////////////////////////////////////*/
-
-    protected final int resolveResourceIdFromAttr(@AttrRes int attr) {
-        TypedArray a = activity.getTheme().obtainStyledAttributes(new int[]{attr});
-        int attributeResourceId = a.getResourceId(0, 0);
-        a.recycle();
-        return attributeResourceId;
-    }
-
     /*//////////////////////////////////////////////////////////////////////////
     // DisplayImageOptions default configurations
     //////////////////////////////////////////////////////////////////////////*/

app/src/main/java/org/schabi/newpipe/MainActivity.java

@@ -28,8 +28,12 @@ import android.os.Looper;
 import android.preference.PreferenceManager;
 import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
+import android.support.design.widget.NavigationView;
 import android.support.v4.app.Fragment;
+import android.support.v4.view.GravityCompat;
+import android.support.v4.widget.DrawerLayout;
 import android.support.v7.app.ActionBar;
+import android.support.v7.app.ActionBarDrawerToggle;
 import android.support.v7.app.AppCompatActivity;
 import android.support.v7.widget.Toolbar;
 import android.util.Log;
@@ -50,11 +54,13 @@ import org.schabi.newpipe.extractor.stream.AudioStream;
 import org.schabi.newpipe.extractor.stream.StreamInfo;
 import org.schabi.newpipe.extractor.stream.VideoStream;
 import org.schabi.newpipe.fragments.BackPressable;
+import org.schabi.newpipe.fragments.MainFragment;
 import org.schabi.newpipe.fragments.detail.VideoDetailFragment;
 import org.schabi.newpipe.fragments.list.search.SearchFragment;
 import org.schabi.newpipe.history.HistoryListener;
 import org.schabi.newpipe.util.Constants;
 import org.schabi.newpipe.util.NavigationHelper;
+import org.schabi.newpipe.util.ServiceHelper;
 import org.schabi.newpipe.util.StateSaver;
 import org.schabi.newpipe.util.ThemeHelper;
 
@@ -67,8 +73,10 @@ import io.reactivex.subjects.PublishSubject;
 
 public class MainActivity extends AppCompatActivity implements HistoryListener {
     private static final String TAG = "MainActivity";
-    public static final boolean DEBUG = false;
+    public static final boolean DEBUG = !BuildConfig.BUILD_TYPE.equals("release");
+
     private SharedPreferences sharedPreferences;
+    private ActionBarDrawerToggle toggle = null;
 
     /*//////////////////////////////////////////////////////////////////////////
     // Activity's LifeCycle
@@ -77,7 +85,10 @@ public class MainActivity extends AppCompatActivity implements HistoryListener {
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         if (DEBUG) Log.d(TAG, "onCreate() called with: savedInstanceState = [" + savedInstanceState + "]");
-        ThemeHelper.setTheme(this);
+
+        sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
+        ThemeHelper.setTheme(this, ServiceHelper.getSelectedServiceId(this));
+
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
 
@@ -85,13 +96,53 @@ public class MainActivity extends AppCompatActivity implements HistoryListener {
             initFragments();
         }
 
-        Toolbar toolbar = findViewById(R.id.toolbar);
-        setSupportActionBar(toolbar);
-        sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
-
+        setSupportActionBar(findViewById(R.id.toolbar));
+        setupDrawer();
         initHistory();
     }
 
+    private void setupDrawer() {
+        final Toolbar toolbar = findViewById(R.id.toolbar);
+        final DrawerLayout drawer = findViewById(R.id.drawer_layout);
+        final NavigationView drawerItems = findViewById(R.id.navigation);
+
+        //drawerItems.setItemIconTintList(null); // Set null to use the original icon
+        drawerItems.getMenu().getItem(ServiceHelper.getSelectedServiceId(this)).setChecked(true);
+
+        if (!BuildConfig.BUILD_TYPE.equals("release")) {
+            toggle = new ActionBarDrawerToggle(this, drawer, toolbar, R.string.drawer_open, R.string.drawer_close);
+            toggle.syncState();
+            drawer.addDrawerListener(toggle);
+            drawer.addDrawerListener(new DrawerLayout.SimpleDrawerListener() {
+                private int lastService;
+
+                @Override
+                public void onDrawerOpened(View drawerView) {
+                    lastService = ServiceHelper.getSelectedServiceId(MainActivity.this);
+                }
+
+                @Override
+                public void onDrawerClosed(View drawerView) {
+                    if (lastService != ServiceHelper.getSelectedServiceId(MainActivity.this)) {
+                        new Handler(Looper.getMainLooper()).post(MainActivity.this::recreate);
+                    }
+                }
+            });
+
+            drawerItems.setNavigationItemSelectedListener(item -> {
+                if (item.getGroupId() == R.id.menu_services_group) {
+                    drawerItems.getMenu().getItem(ServiceHelper.getSelectedServiceId(this)).setChecked(false);
+                    ServiceHelper.setSelectedServiceId(this, item.getTitle().toString());
+                    drawerItems.getMenu().getItem(ServiceHelper.getSelectedServiceId(this)).setChecked(true);
+                }
+                drawer.closeDrawers();
+                return true;
+            });
+        } else {
+            drawer.setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_CLOSED);
+        }
+    }
+
     @Override
     protected void onDestroy() {
         super.onDestroy();
@@ -112,20 +163,14 @@ public class MainActivity extends AppCompatActivity implements HistoryListener {
             sharedPreferences.edit().putBoolean(Constants.KEY_THEME_CHANGE, false).apply();
             // https://stackoverflow.com/questions/10844112/runtimeexception-performing-pause-of-activity-that-is-not-resumed
             // Briefly, let the activity resume properly posting the recreate call to end of the message queue
-            new Handler(Looper.getMainLooper()).post(new Runnable() {
-                @Override
-                public void run() {
-                    MainActivity.this.recreate();
-                }
-            });
+            new Handler(Looper.getMainLooper()).post(MainActivity.this::recreate);
         }
 
-        if(sharedPreferences.getBoolean(Constants.KEY_MAIN_PAGE_CHANGE, false)) {
+        if (sharedPreferences.getBoolean(Constants.KEY_MAIN_PAGE_CHANGE, false)) {
             if (DEBUG) Log.d(TAG, "main page has changed, recreating main fragment...");
             sharedPreferences.edit().putBoolean(Constants.KEY_MAIN_PAGE_CHANGE, false).apply();
             NavigationHelper.openMainActivity(this);
         }
-
     }
 
     @Override
@@ -159,6 +204,38 @@ public class MainActivity extends AppCompatActivity implements HistoryListener {
         } else super.onBackPressed();
     }
 
+    /**
+     * Implement the following diagram behavior for the up button:
+     * <pre>
+     *              +---------------+
+     *              |  Main Screen  +----+
+     *              +-------+-------+    |
+     *                      |            |
+     *                      ▲ Up         | Search Button
+     *                      |            |
+     *                 +----+-----+      |
+     *    +------------+  Search  |◄-----+
+     *    |            +----+-----+
+     *    |   Open          |
+     *    |  something      ▲ Up
+     *    |                 |
+     *    |    +------------+-------------+
+     *    |    |                          |
+     *    |    |  Video    <->  Channel   |
+     *    +---►|  Channel  <->  Playlist  |
+     *         |  Video    <->  ....      |
+     *         |                          |
+     *         +--------------------------+
+     * </pre>
+     */
+    private void onHomeButtonPressed() {
+        // If search fragment wasn't found in the backstack...
+        if (!NavigationHelper.tryGotoSearchFragment(getSupportFragmentManager())) {
+            // ...go to the main fragment
+            NavigationHelper.gotoMainFragment(getSupportFragmentManager());
+        }
+    }
+
     /*//////////////////////////////////////////////////////////////////////////
     // Menu
     //////////////////////////////////////////////////////////////////////////*/
@@ -184,6 +261,9 @@ public class MainActivity extends AppCompatActivity implements HistoryListener {
         if (actionBar != null) {
             actionBar.setDisplayHomeAsUpEnabled(false);
         }
+
+        updateDrawerNavigation();
+
         return true;
     }
 
@@ -194,7 +274,7 @@ public class MainActivity extends AppCompatActivity implements HistoryListener {
 
         switch (id) {
             case android.R.id.home:
-                NavigationHelper.gotoMainFragment(getSupportFragmentManager());
+                onHomeButtonPressed();
                 return true;
             case R.id.action_settings:
                 NavigationHelper.openSettings(this);
@@ -228,6 +308,27 @@ public class MainActivity extends AppCompatActivity implements HistoryListener {
     // Utils
     //////////////////////////////////////////////////////////////////////////*/
 
+    private void updateDrawerNavigation() {
+        if (getSupportActionBar() == null) return;
+
+        final Toolbar toolbar = findViewById(R.id.toolbar);
+        final DrawerLayout drawer = findViewById(R.id.drawer_layout);
+
+        final Fragment fragment = getSupportFragmentManager().findFragmentById(R.id.fragment_holder);
+        if (fragment instanceof MainFragment) {
+            getSupportActionBar().setDisplayHomeAsUpEnabled(false);
+            if (toggle != null) {
+                toggle.syncState();
+                toolbar.setNavigationOnClickListener(v -> drawer.openDrawer(GravityCompat.START));
+                drawer.setDrawerLockMode(DrawerLayout.LOCK_MODE_UNDEFINED);
+            }
+        } else {
+            drawer.setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_CLOSED);
+            getSupportActionBar().setDisplayHomeAsUpEnabled(true);
+            toolbar.setNavigationOnClickListener(v -> onHomeButtonPressed());
+        }
+    }
+
     private void handleIntent(Intent intent) {
         if (DEBUG) Log.d(TAG, "handleIntent() called with: intent = [" + intent + "]");
 

app/src/main/java/org/schabi/newpipe/RouterActivity.java

@@ -3,14 +3,25 @@ package org.schabi.newpipe;
 import android.content.Intent;
 import android.os.Bundle;
 import android.support.v7.app.AppCompatActivity;
+import android.text.TextUtils;
 import android.widget.Toast;
 
+import org.schabi.newpipe.extractor.exceptions.ExtractionException;
+import org.schabi.newpipe.report.UserAction;
+import org.schabi.newpipe.util.ExtractorHelper;
 import org.schabi.newpipe.util.NavigationHelper;
 
 import java.util.Collection;
 import java.util.HashSet;
 
-/**
+import icepick.Icepick;
+import icepick.State;
+import io.reactivex.Observable;
+import io.reactivex.android.schedulers.AndroidSchedulers;
+import io.reactivex.disposables.CompositeDisposable;
+import io.reactivex.schedulers.Schedulers;
+
+/*
  * Copyright (C) Christian Schabesberger 2017 <chris.schabesberger@mailbox.org>
  * RouterActivity.java is part of NewPipe.
  *
@@ -34,23 +45,71 @@ import java.util.HashSet;
  */
 public class RouterActivity extends AppCompatActivity {
 
+    @State
+    protected String currentUrl;
+    protected CompositeDisposable disposables = new CompositeDisposable();
+
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
+        Icepick.restoreInstanceState(this, savedInstanceState);
 
-        String videoUrl = getUrl(getIntent());
-        handleUrl(videoUrl);
+        if (TextUtils.isEmpty(currentUrl)) {
+            currentUrl = getUrl(getIntent());
+
+            if (TextUtils.isEmpty(currentUrl)) {
+                Toast.makeText(this, R.string.invalid_url_toast, Toast.LENGTH_LONG).show();
+                finish();
+            }
+        }
+    }
+
+    @Override
+    protected void onSaveInstanceState(Bundle outState) {
+        super.onSaveInstanceState(outState);
+        Icepick.saveInstanceState(this, outState);
+    }
+
+    @Override
+    protected void onStart() {
+        super.onStart();
+        handleUrl(currentUrl);
     }
 
     protected void handleUrl(String url) {
-        boolean success = NavigationHelper.openByLink(this, url);
-        if (!success) {
+        disposables.add(Observable
+                .fromCallable(() -> NavigationHelper.getIntentByLink(this, url))
+                .subscribeOn(Schedulers.io())
+                .observeOn(AndroidSchedulers.mainThread())
+                .subscribe(intent -> {
+                    intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+                    intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK);
+                    startActivity(intent);
+
+                    finish();
+                }, this::handleError)
+        );
+    }
+
+    protected void handleError(Throwable error) {
+        error.printStackTrace();
+
+        if (error instanceof ExtractionException) {
             Toast.makeText(this, R.string.url_not_supported_toast, Toast.LENGTH_LONG).show();
+        } else {
+            ExtractorHelper.handleGeneralException(this, -1, null, error, UserAction.SOMETHING_ELSE, null);
         }
 
         finish();
     }
 
+    @Override
+    protected void onDestroy() {
+        super.onDestroy();
+
+        disposables.clear();
+    }
+
     /*//////////////////////////////////////////////////////////////////////////
     // Utils
     //////////////////////////////////////////////////////////////////////////*/
@@ -71,7 +130,8 @@ public class RouterActivity extends AppCompatActivity {
         } else if (intent.getStringExtra(Intent.EXTRA_TEXT) != null) {
             //this means that vidoe was called through share menu
             String extraText = intent.getStringExtra(Intent.EXTRA_TEXT);
-            videoUrl = getUris(extraText)[0];
+            final String[] uris = getUris(extraText);
+            videoUrl = uris.length > 0 ? uris[0] : null;
         }
 
         return videoUrl;

app/src/main/java/org/schabi/newpipe/RouterPlayerActivity.java

@@ -0,0 +1,413 @@
+package org.schabi.newpipe;
+
+import android.app.IntentService;
+import android.content.DialogInterface;
+import android.content.Intent;
+import android.content.SharedPreferences;
+import android.os.Bundle;
+import android.os.PersistableBundle;
+import android.preference.PreferenceManager;
+import android.support.annotation.DrawableRes;
+import android.support.annotation.Nullable;
+import android.support.v4.app.NotificationCompat;
+import android.support.v7.app.AlertDialog;
+import android.text.TextUtils;
+import android.view.ContextThemeWrapper;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.Button;
+import android.widget.LinearLayout;
+import android.widget.RadioButton;
+import android.widget.RadioGroup;
+import android.widget.Toast;
+
+import org.schabi.newpipe.extractor.Info;
+import org.schabi.newpipe.extractor.NewPipe;
+import org.schabi.newpipe.extractor.ServiceList;
+import org.schabi.newpipe.extractor.StreamingService;
+import org.schabi.newpipe.extractor.StreamingService.LinkType;
+import org.schabi.newpipe.extractor.channel.ChannelInfo;
+import org.schabi.newpipe.extractor.exceptions.ExtractionException;
+import org.schabi.newpipe.extractor.playlist.PlaylistInfo;
+import org.schabi.newpipe.extractor.stream.StreamInfo;
+import org.schabi.newpipe.player.helper.PlayerHelper;
+import org.schabi.newpipe.playlist.ChannelPlayQueue;
+import org.schabi.newpipe.playlist.PlayQueue;
+import org.schabi.newpipe.playlist.PlaylistPlayQueue;
+import org.schabi.newpipe.playlist.SinglePlayQueue;
+import org.schabi.newpipe.report.UserAction;
+import org.schabi.newpipe.util.ExtractorHelper;
+import org.schabi.newpipe.util.NavigationHelper;
+import org.schabi.newpipe.util.PermissionHelper;
+import org.schabi.newpipe.util.ThemeHelper;
+
+import java.io.Serializable;
+import java.util.Arrays;
+
+import icepick.State;
+import io.reactivex.Observable;
+import io.reactivex.Single;
+import io.reactivex.android.schedulers.AndroidSchedulers;
+import io.reactivex.disposables.Disposable;
+import io.reactivex.functions.Consumer;
+import io.reactivex.schedulers.Schedulers;
+
+import static org.schabi.newpipe.util.ThemeHelper.resolveResourceIdFromAttr;
+
+/**
+ * Get the url from the intent and open it in the chosen preferred player
+ */
+public class RouterPlayerActivity extends RouterActivity {
+
+    @State
+    protected int currentServiceId = -1;
+    private StreamingService currentService;
+    @State
+    protected LinkType currentLinkType;
+    @State
+    protected int selectedRadioPosition = -1;
+    protected int selectedPreviously = -1;
+
+    @Override
+    public void onCreate(@Nullable Bundle savedInstanceState, @Nullable PersistableBundle persistentState) {
+        super.onCreate(savedInstanceState, persistentState);
+        setTheme(ThemeHelper.isLightThemeSelected(this) ? R.style.RouterActivityThemeLight : R.style.RouterActivityThemeDark);
+    }
+
+    @Override
+    protected void handleUrl(String url) {
+        disposables.add(Observable
+                .fromCallable(() -> {
+                    if (currentServiceId == -1) {
+                        currentService = NewPipe.getServiceByUrl(url);
+                        currentServiceId = currentService.getServiceId();
+                        currentLinkType = currentService.getLinkTypeByUrl(url);
+                        currentUrl = NavigationHelper.getCleanUrl(currentService, url, currentLinkType);
+                    } else {
+                        currentService = NewPipe.getService(currentServiceId);
+                    }
+
+                    return currentLinkType != LinkType.NONE;
+                })
+                .subscribeOn(Schedulers.io())
+                .observeOn(AndroidSchedulers.mainThread())
+                .subscribe(result -> {
+                    if (result) {
+                        onSuccess();
+                    } else {
+                        onError();
+                    }
+                }, this::handleError));
+    }
+
+    protected void onError() {
+        Toast.makeText(this, R.string.url_not_supported_toast, Toast.LENGTH_LONG).show();
+        finish();
+    }
+
+    protected void onSuccess() {
+        final SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(this);
+        boolean isExtVideoEnabled = preferences.getBoolean(getString(R.string.use_external_video_player_key), false);
+        boolean isExtAudioEnabled = preferences.getBoolean(getString(R.string.use_external_audio_player_key), false);
+
+        if ((isExtAudioEnabled || isExtVideoEnabled) && currentLinkType != LinkType.STREAM) {
+            Toast.makeText(this, R.string.external_player_unsupported_link_type, Toast.LENGTH_LONG).show();
+            finish();
+            return;
+        }
+
+        // TODO: Add some sort of "capabilities" field to services (audio only, video and audio, etc.)
+        if (currentService == ServiceList.SoundCloud.getService()) {
+            handleChoice(getString(R.string.background_player_key));
+            return;
+        }
+
+        final String playerChoiceKey = preferences.getString(getString(R.string.preferred_player_key), getString(R.string.preferred_player_default));
+        final String alwaysAskKey = getString(R.string.always_ask_player_key);
+
+        if (playerChoiceKey.equals(alwaysAskKey)) {
+            showDialog();
+        } else {
+            handleChoice(playerChoiceKey);
+        }
+    }
+
+    private void showDialog() {
+        SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(this);
+        final ContextThemeWrapper themeWrapper = new ContextThemeWrapper(this,
+                ThemeHelper.isLightThemeSelected(this) ? R.style.LightTheme : R.style.DarkTheme);
+
+        LayoutInflater inflater = LayoutInflater.from(themeWrapper);
+        final LinearLayout rootLayout = (LinearLayout) inflater.inflate(R.layout.preferred_player_dialog_view, null, false);
+        final RadioGroup radioGroup = rootLayout.findViewById(android.R.id.list);
+
+        final AdapterChoiceItem[] choices = {
+                new AdapterChoiceItem(getString(R.string.video_player_key), getString(R.string.video_player),
+                        resolveResourceIdFromAttr(themeWrapper, R.attr.play)),
+                new AdapterChoiceItem(getString(R.string.background_player_key), getString(R.string.background_player),
+                        resolveResourceIdFromAttr(themeWrapper, R.attr.audio)),
+                new AdapterChoiceItem(getString(R.string.popup_player_key), getString(R.string.popup_player),
+                        resolveResourceIdFromAttr(themeWrapper, R.attr.popup))
+        };
+
+        final DialogInterface.OnClickListener dialogButtonsClickListener = (dialog, which) -> {
+            final int indexOfChild = radioGroup.indexOfChild(radioGroup.findViewById(radioGroup.getCheckedRadioButtonId()));
+            final AdapterChoiceItem choice = choices[indexOfChild];
+
+            handleChoice(choice.key);
+
+            if (which == DialogInterface.BUTTON_POSITIVE) {
+                preferences.edit().putString(getString(R.string.preferred_player_key), choice.key).apply();
+            }
+        };
+
+        final AlertDialog alertDialog = new AlertDialog.Builder(themeWrapper)
+                .setTitle(R.string.preferred_player_share_menu_title)
+                .setView(radioGroup)
+                .setCancelable(true)
+                .setNegativeButton(R.string.just_once, dialogButtonsClickListener)
+                .setPositiveButton(R.string.always, dialogButtonsClickListener)
+                .setOnDismissListener((dialog) -> finish())
+                .create();
+
+        alertDialog.setOnShowListener(dialog -> {
+            setDialogButtonsState(alertDialog, radioGroup.getCheckedRadioButtonId() != -1);
+        });
+
+        radioGroup.setOnCheckedChangeListener((group, checkedId) -> setDialogButtonsState(alertDialog, true));
+        final View.OnClickListener radioButtonsClickListener = v -> {
+            final int indexOfChild = radioGroup.indexOfChild(v);
+            if (indexOfChild == -1) return;
+
+            selectedPreviously = selectedRadioPosition;
+            selectedRadioPosition = indexOfChild;
+
+            if (selectedPreviously == selectedRadioPosition) {
+                handleChoice(choices[selectedRadioPosition].key);
+            }
+        };
+
+        int id = 12345;
+        for (AdapterChoiceItem item : choices) {
+            final RadioButton radioButton = (RadioButton) inflater.inflate(R.layout.list_radio_icon_item, null);
+            radioButton.setText(item.description);
+            radioButton.setCompoundDrawablesWithIntrinsicBounds(item.icon, 0, 0, 0);
+            radioButton.setChecked(false);
+            radioButton.setId(id++);
+            radioButton.setLayoutParams(new RadioGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT));
+            radioButton.setOnClickListener(radioButtonsClickListener);
+            radioGroup.addView(radioButton);
+        }
+
+        if (selectedRadioPosition == -1) {
+            final String lastSelectedPlayer = preferences.getString(getString(R.string.preferred_player_last_selected_key), null);
+            if (!TextUtils.isEmpty(lastSelectedPlayer)) {
+                for (int i = 0; i < choices.length; i++) {
+                    AdapterChoiceItem c = choices[i];
+                    if (lastSelectedPlayer.equals(c.key)) {
+                        selectedRadioPosition = i;
+                        break;
+                    }
+                }
+            }
+        }
+
+        selectedRadioPosition = Math.min(Math.max(-1, selectedRadioPosition), choices.length - 1);
+        if (selectedRadioPosition != -1) {
+            ((RadioButton) radioGroup.getChildAt(selectedRadioPosition)).setChecked(true);
+        }
+        selectedPreviously = selectedRadioPosition;
+
+        alertDialog.show();
+    }
+
+    private void setDialogButtonsState(AlertDialog dialog, boolean state) {
+        final Button negativeButton = dialog.getButton(DialogInterface.BUTTON_NEGATIVE);
+        final Button positiveButton = dialog.getButton(DialogInterface.BUTTON_POSITIVE);
+        if (negativeButton == null || positiveButton == null) return;
+
+        negativeButton.setEnabled(state);
+        positiveButton.setEnabled(state);
+    }
+
+    private void handleChoice(final String playerChoiceKey) {
+        if (Arrays.asList(getResources().getStringArray(R.array.preferred_player_values_list)).contains(playerChoiceKey)) {
+            PreferenceManager.getDefaultSharedPreferences(this).edit()
+                    .putString(getString(R.string.preferred_player_last_selected_key), playerChoiceKey).apply();
+        }
+
+        if (playerChoiceKey.equals(getString(R.string.popup_player_key)) && !PermissionHelper.isPopupEnabled(this)) {
+            PermissionHelper.showPopupEnablementToast(this);
+            finish();
+            return;
+        }
+
+        final Intent intent = new Intent(this, FetcherService.class);
+        intent.putExtra(FetcherService.KEY_CHOICE, new Choice(currentService.getServiceId(), currentLinkType, currentUrl, playerChoiceKey));
+        startService(intent);
+
+        finish();
+    }
+
+    private static class AdapterChoiceItem {
+        final String description, key;
+        @DrawableRes
+        final int icon;
+
+        AdapterChoiceItem(String key, String description, int icon) {
+            this.description = description;
+            this.key = key;
+            this.icon = icon;
+        }
+    }
+
+    private static class Choice implements Serializable {
+        final int serviceId;
+        final String url, playerChoice;
+        final LinkType linkType;
+
+        Choice(int serviceId, LinkType linkType, String url, String playerChoice) {
+            this.serviceId = serviceId;
+            this.linkType = linkType;
+            this.url = url;
+            this.playerChoice = playerChoice;
+        }
+
+        @Override
+        public String toString() {
+            return serviceId + ":" + url + " > " + linkType + " ::: " + playerChoice;
+        }
+    }
+
+    /*//////////////////////////////////////////////////////////////////////////
+    // Service Fetcher
+    //////////////////////////////////////////////////////////////////////////*/
+
+    public static class FetcherService extends IntentService {
+
+        private static final int ID = 456;
+        public static final String KEY_CHOICE = "key_choice";
+        private Disposable fetcher;
+
+        public FetcherService() {
+            super(FetcherService.class.getSimpleName());
+        }
+
+        @Override
+        public void onCreate() {
+            super.onCreate();
+            startForeground(ID, createNotification().build());
+        }
+
+        @Override
+        protected void onHandleIntent(@Nullable Intent intent) {
+            if (intent == null) return;
+
+            final Serializable serializable = intent.getSerializableExtra(KEY_CHOICE);
+            if (!(serializable instanceof Choice)) return;
+            Choice playerChoice = (Choice) serializable;
+            handleChoice(playerChoice);
+        }
+
+        public void handleChoice(Choice choice) {
+            Single<? extends Info> single = null;
+            UserAction userAction = UserAction.SOMETHING_ELSE;
+
+            switch (choice.linkType) {
+                case STREAM:
+                    single = ExtractorHelper.getStreamInfo(choice.serviceId, choice.url, false);
+                    userAction = UserAction.REQUESTED_STREAM;
+                    break;
+                case CHANNEL:
+                    single = ExtractorHelper.getChannelInfo(choice.serviceId, choice.url, false);
+                    userAction = UserAction.REQUESTED_CHANNEL;
+                    break;
+                case PLAYLIST:
+                    single = ExtractorHelper.getPlaylistInfo(choice.serviceId, choice.url, false);
+                    userAction = UserAction.REQUESTED_PLAYLIST;
+                    break;
+            }
+
+
+            if (single != null) {
+                final UserAction finalUserAction = userAction;
+                final Consumer<Info> resultHandler = getResultHandler(choice);
+                fetcher = single
+                        .observeOn(AndroidSchedulers.mainThread())
+                        .subscribe(info -> {
+                            resultHandler.accept(info);
+                            if (fetcher != null) fetcher.dispose();
+                        }, throwable -> ExtractorHelper.handleGeneralException(this,
+                                choice.serviceId, choice.url, throwable, finalUserAction, ", opened with " + choice.playerChoice));
+            }
+        }
+
+        public Consumer<Info> getResultHandler(Choice choice) {
+            return info -> {
+                final String videoPlayerKey = getString(R.string.video_player_key);
+                final String backgroundPlayerKey = getString(R.string.background_player_key);
+                final String popupPlayerKey = getString(R.string.popup_player_key);
+
+                final SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(this);
+                boolean isExtVideoEnabled = preferences.getBoolean(getString(R.string.use_external_video_player_key), false);
+                boolean isExtAudioEnabled = preferences.getBoolean(getString(R.string.use_external_audio_player_key), false);
+                boolean useOldVideoPlayer = PlayerHelper.isUsingOldPlayer(this);
+
+                PlayQueue playQueue;
+                String playerChoice = choice.playerChoice;
+
+                if (info instanceof StreamInfo) {
+                    if (playerChoice.equals(backgroundPlayerKey) && isExtAudioEnabled) {
+                        NavigationHelper.playOnExternalAudioPlayer(this, (StreamInfo) info);
+
+                    } else if (playerChoice.equals(videoPlayerKey) && isExtVideoEnabled) {
+                        NavigationHelper.playOnExternalVideoPlayer(this, (StreamInfo) info);
+
+                    } else if (playerChoice.equals(videoPlayerKey) && useOldVideoPlayer) {
+                        NavigationHelper.playOnOldVideoPlayer(this, (StreamInfo) info);
+
+                    } else {
+                        playQueue = new SinglePlayQueue((StreamInfo) info);
+
+                        if (playerChoice.equals(videoPlayerKey)) {
+                            NavigationHelper.playOnMainPlayer(this, playQueue);
+                        } else if (playerChoice.equals(backgroundPlayerKey)) {
+                            NavigationHelper.enqueueOnBackgroundPlayer(this, playQueue, true);
+                        } else if (playerChoice.equals(popupPlayerKey)) {
+                            NavigationHelper.enqueueOnPopupPlayer(this, playQueue, true);
+                        }
+                    }
+                }
+
+                if (info instanceof ChannelInfo || info instanceof PlaylistInfo) {
+                    playQueue = info instanceof ChannelInfo ? new ChannelPlayQueue((ChannelInfo) info) : new PlaylistPlayQueue((PlaylistInfo) info);
+
+                    if (playerChoice.equals(videoPlayerKey)) {
+                        NavigationHelper.playOnMainPlayer(this, playQueue);
+                    } else if (playerChoice.equals(backgroundPlayerKey)) {
+                        NavigationHelper.playOnBackgroundPlayer(this, playQueue);
+                    } else if (playerChoice.equals(popupPlayerKey)) {
+                        NavigationHelper.playOnPopupPlayer(this, playQueue);
+                    }
+                }
+            };
+        }
+
+        @Override
+        public void onDestroy() {
+            super.onDestroy();
+            stopForeground(true);
+            if (fetcher != null) fetcher.dispose();
+        }
+
+        private NotificationCompat.Builder createNotification() {
+            return new NotificationCompat.Builder(this, getString(R.string.notification_channel_id))
+                    .setOngoing(true)
+                    .setSmallIcon(R.drawable.ic_newpipe_triangle_white)
+                    .setVisibility(NotificationCompat.VISIBILITY_PUBLIC)
+                    .setContentTitle(getString(R.string.preferred_player_fetcher_notification_title))
+                    .setContentText(getString(R.string.preferred_player_fetcher_notification_message));
+        }
+    }
+}

app/src/main/java/org/schabi/newpipe/RouterPopupActivity.java

@@ -1,49 +0,0 @@
-package org.schabi.newpipe;
-
-import android.content.Intent;
-import android.os.Build;
-import android.widget.Toast;
-
-import org.schabi.newpipe.extractor.NewPipe;
-import org.schabi.newpipe.extractor.StreamingService;
-import org.schabi.newpipe.extractor.exceptions.ExtractionException;
-import org.schabi.newpipe.player.PopupVideoPlayer;
-import org.schabi.newpipe.util.Constants;
-import org.schabi.newpipe.util.PermissionHelper;
-
-/**
- * Get the url from the intent and open a popup player
- */
-public class RouterPopupActivity extends RouterActivity {
-
-    @Override
-    protected void handleUrl(String url) {
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M
-                && !PermissionHelper.checkSystemAlertWindowPermission(this)) {
-            Toast.makeText(this, R.string.msg_popup_permission, Toast.LENGTH_LONG).show();
-            return;
-        }
-        StreamingService service;
-        try {
-            service = NewPipe.getServiceByUrl(url);
-        } catch (ExtractionException e) {
-            Toast.makeText(this, R.string.url_not_supported_toast, Toast.LENGTH_LONG).show();
-            return;
-        }
-
-        Intent callIntent = new Intent(this, PopupVideoPlayer.class);
-        switch (service.getLinkTypeByUrl(url)) {
-            case STREAM:
-                break;
-            default:
-                Toast.makeText(this, R.string.url_not_supported_toast, Toast.LENGTH_LONG).show();
-                return;
-        }
-
-        callIntent.putExtra(Constants.KEY_URL, url);
-        callIntent.putExtra(Constants.KEY_SERVICE_ID, service.getServiceId());
-        startService(callIntent);
-
-        finish();
-    }
-}

app/src/main/java/org/schabi/newpipe/about/AboutActivity.java

@@ -135,8 +135,12 @@ public class AboutActivity extends AppCompatActivity {
             View githubLink = rootView.findViewById(R.id.github_link);
             githubLink.setOnClickListener(new OnGithubLinkClickListener());
 
-            View licenseLink = rootView.findViewById(R.id.app_read_license);
-            licenseLink.setOnClickListener(new OnReadFullLicenseClickListener());
+            View donationLink = rootView.findViewById(R.id.donation_link);
+            donationLink.setOnClickListener(new OnDonationLinkClickListener());
+
+            View websiteLink = rootView.findViewById(R.id.website_link);
+            websiteLink.setOnClickListener(new OnWebsiteLinkClickListener());
+
             return rootView;
         }
 
@@ -149,10 +153,21 @@ public class AboutActivity extends AppCompatActivity {
             }
         }
 
-        private static class OnReadFullLicenseClickListener implements View.OnClickListener {
+        private static class OnDonationLinkClickListener implements View.OnClickListener {
             @Override
-            public void onClick(View v) {
-                LicenseFragment.showLicense(v.getContext(), StandardLicenses.GPL3);
+            public void onClick(final View view) {
+                final Context context = view.getContext();
+                Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(context.getString(R.string.donation_url)));
+                context.startActivity(intent);
+            }
+        }
+
+        private static class OnWebsiteLinkClickListener implements View.OnClickListener {
+            @Override
+            public void onClick(final View view) {
+                final Context context = view.getContext();
+                Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(context.getString(R.string.website_url)));
+                context.startActivity(intent);
             }
         }
     }

app/src/main/java/org/schabi/newpipe/about/LicenseFragment.java

@@ -62,6 +62,9 @@ public class LicenseFragment extends Fragment {
         View rootView = inflater.inflate(R.layout.fragment_licenses, container, false);
         ViewGroup softwareComponentsView = rootView.findViewById(R.id.software_components);
 
+        View licenseLink = rootView.findViewById(R.id.app_read_license);
+        licenseLink.setOnClickListener(new OnReadFullLicenseClickListener());
+
         for (final SoftwareComponent component : softwareComponents) {
             View componentView = inflater.inflate(R.layout.item_software_component, container, false);
             TextView softwareName = componentView.findViewById(R.id.name);
@@ -119,4 +122,11 @@ public class LicenseFragment extends Fragment {
         Intent browserIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(componentLink));
         startActivity(browserIntent);
     }
+
+    private static class OnReadFullLicenseClickListener implements View.OnClickListener {
+        @Override
+        public void onClick(View v) {
+            LicenseFragment.showLicense(v.getContext(), StandardLicenses.GPL3);
+        }
+    }
 }

app/src/main/java/org/schabi/newpipe/database/history/model/WatchHistoryEntry.java

@@ -48,7 +48,7 @@ public class WatchHistoryEntry extends HistoryEntry {
     }
 
     public WatchHistoryEntry(StreamInfo streamInfo) {
-        this(new Date(), streamInfo.service_id, streamInfo.name, streamInfo.url,
+        this(new Date(), streamInfo.getServiceId(), streamInfo.getName(), streamInfo.getUrl(),
                 streamInfo.id, streamInfo.thumbnail_url, streamInfo.uploader_name, streamInfo.duration);
     }
 

app/src/main/java/org/schabi/newpipe/database/subscription/SubscriptionEntity.java

@@ -116,10 +116,7 @@ public class SubscriptionEntity {
 
     @Ignore
     public ChannelInfoItem toChannelInfoItem() {
-        ChannelInfoItem item = new ChannelInfoItem();
-        item.url = getUrl();
-        item.service_id = getServiceId();
-        item.name = getName();
+        ChannelInfoItem item = new ChannelInfoItem(getServiceId(), getUrl(), getName());
         item.thumbnail_url = getAvatarUrl();
         item.subscriber_count = getSubscriberCount();
         item.description = getDescription();

app/src/main/java/org/schabi/newpipe/download/DownloadDialog.java

@@ -108,8 +108,8 @@ public class DownloadDialog extends DialogFragment implements RadioGroup.OnCheck
     public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
         super.onViewCreated(view, savedInstanceState);
         nameEditText = view.findViewById(R.id.file_name);
-        nameEditText.setText(FilenameUtils.createFilename(getContext(), currentInfo.name));
-        selectedAudioIndex = ListHelper.getDefaultAudioFormat(getContext(), currentInfo.audio_streams);
+        nameEditText.setText(FilenameUtils.createFilename(getContext(), currentInfo.getName()));
+        selectedAudioIndex = ListHelper.getDefaultAudioFormat(getContext(), currentInfo.getAudioStreams());
 
         streamsSpinner = view.findViewById(R.id.quality_spinner);
         streamsSpinner.setOnItemSelectedListener(this);
@@ -183,7 +183,7 @@ public class DownloadDialog extends DialogFragment implements RadioGroup.OnCheck
         String[] items = new String[audioStreams.size()];
         for (int i = 0; i < audioStreams.size(); i++) {
             AudioStream audioStream = audioStreams.get(i);
-            items[i] = MediaFormat.getNameById(audioStream.format) + " " + audioStream.average_bitrate + "kbps";
+            items[i] = audioStream.getFormat().getName() + " " + audioStream.getAverageBitrate() + "kbps";
         }
 
         ArrayAdapter<String> itemAdapter = new ArrayAdapter<>(getContext(), android.R.layout.simple_spinner_dropdown_item, items);
@@ -242,7 +242,7 @@ public class DownloadDialog extends DialogFragment implements RadioGroup.OnCheck
         RadioButton audioButton = view.findViewById(R.id.audio_button);
         RadioButton videoButton = view.findViewById(R.id.video_button);
 
-        if (currentInfo.audio_streams == null || currentInfo.audio_streams.size() == 0) {
+        if (currentInfo.getAudioStreams() == null || currentInfo.getAudioStreams().size() == 0) {
             audioButton.setVisibility(View.GONE);
             videoButton.setChecked(true);
         } else if (sortedStreamVideosList == null || sortedStreamVideosList.size() == 0) {
@@ -256,14 +256,18 @@ public class DownloadDialog extends DialogFragment implements RadioGroup.OnCheck
         String url, location;
 
         String fileName = nameEditText.getText().toString().trim();
-        if (fileName.isEmpty()) fileName = FilenameUtils.createFilename(getContext(), currentInfo.name);
+        if (fileName.isEmpty()) fileName = FilenameUtils.createFilename(getContext(), currentInfo.getName());
 
         boolean isAudio = radioVideoAudioGroup.getCheckedRadioButtonId() == R.id.audio_button;
-        url = isAudio ? currentInfo.audio_streams.get(selectedAudioIndex).url : sortedStreamVideosList.get(selectedVideoIndex).url;
-        location = isAudio ? NewPipeSettings.getAudioDownloadPath(getContext()) : NewPipeSettings.getVideoDownloadPath(getContext());
-
-        if (isAudio) fileName += "." + MediaFormat.getSuffixById(currentInfo.audio_streams.get(selectedAudioIndex).format);
-        else fileName += "." + MediaFormat.getSuffixById(sortedStreamVideosList.get(selectedVideoIndex).format);
+        if (isAudio) {
+            url = currentInfo.getAudioStreams().get(selectedAudioIndex).getUrl();
+            location = NewPipeSettings.getAudioDownloadPath(getContext());
+            fileName += "." + currentInfo.getAudioStreams().get(selectedAudioIndex).getFormat().getSuffix();
+        } else {
+            url = sortedStreamVideosList.get(selectedVideoIndex).getUrl();
+            location = NewPipeSettings.getVideoDownloadPath(getContext());
+            fileName += "." + sortedStreamVideosList.get(selectedVideoIndex).getFormat().getSuffix();
+        }
 
         DownloadManagerService.startMission(getContext(), url, location, fileName, isAudio, threadsSeekBar.getProgress() + 1);
         getDialog().dismiss();

app/src/main/java/org/schabi/newpipe/fragments/BaseStateFragment.java

@@ -1,6 +1,7 @@
 package org.schabi.newpipe.fragments;
 
 import android.content.Intent;
+import android.net.Uri;
 import android.os.Bundle;
 import android.support.annotation.Nullable;
 import android.support.annotation.StringRes;
@@ -50,6 +51,7 @@ public abstract class BaseStateFragment<I> extends BaseFragment implements ViewC
     protected Button errorButtonRetry;
     protected TextView errorTextView;
 
+    @State
     protected boolean useAsFrontPage = false;
 
     @Override
@@ -218,6 +220,7 @@ public abstract class BaseStateFragment<I> extends BaseFragment implements ViewC
 
         if (serviceName == null) serviceName = "none";
         if (request == null) request = "none";
+
         ErrorActivity.reportError(getContext(), exception, MainActivity.class, null, ErrorActivity.ErrorInfo.make(userAction, serviceName, request, errorId));
     }
 
@@ -238,4 +241,28 @@ public abstract class BaseStateFragment<I> extends BaseFragment implements ViewC
 
         ErrorActivity.reportError(getContext(), exception, MainActivity.class, rootView, ErrorActivity.ErrorInfo.make(userAction, serviceName, request, errorId));
     }
+
+    /*//////////////////////////////////////////////////////////////////////////
+    // Utils
+    //////////////////////////////////////////////////////////////////////////*/
+
+    public void setTitle(String title) {
+        if (DEBUG) Log.d(TAG, "setTitle() called with: title = [" + title + "]");
+        if (activity != null && activity.getSupportActionBar() != null) {
+            activity.getSupportActionBar().setTitle(title);
+        }
+    }
+
+    protected void openUrlInBrowser(String url) {
+        Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
+        startActivity(Intent.createChooser(intent, activity.getString(R.string.share_dialog_title)));
+    }
+
+    protected void shareUrl(String subject, String url) {
+        Intent intent = new Intent(Intent.ACTION_SEND);
+        intent.setType("text/plain");
+        intent.putExtra(Intent.EXTRA_SUBJECT, subject);
+        intent.putExtra(Intent.EXTRA_TEXT, url);
+        startActivity(Intent.createChooser(intent, getString(R.string.share_dialog_title)));
+    }
 }

app/src/main/java/org/schabi/newpipe/fragments/MainFragment.java

@@ -2,6 +2,7 @@ package org.schabi.newpipe.fragments;
 
 import android.content.SharedPreferences;
 import android.os.Bundle;
+import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
 import android.support.design.widget.TabLayout;
 import android.support.v4.app.Fragment;
@@ -22,6 +23,7 @@ import android.view.ViewGroup;
 import org.schabi.newpipe.BaseFragment;
 import org.schabi.newpipe.R;
 import org.schabi.newpipe.extractor.NewPipe;
+import org.schabi.newpipe.extractor.ServiceList;
 import org.schabi.newpipe.extractor.StreamingService;
 import org.schabi.newpipe.extractor.kiosk.KioskList;
 import org.schabi.newpipe.fragments.list.channel.ChannelFragment;
@@ -30,30 +32,25 @@ import org.schabi.newpipe.fragments.list.kiosk.KioskFragment;
 import org.schabi.newpipe.fragments.subscription.SubscriptionFragment;
 import org.schabi.newpipe.report.ErrorActivity;
 import org.schabi.newpipe.report.UserAction;
-import org.schabi.newpipe.util.Constants;
 import org.schabi.newpipe.util.KioskTranslator;
 import org.schabi.newpipe.util.NavigationHelper;
+import org.schabi.newpipe.util.ServiceHelper;
 import org.schabi.newpipe.util.ThemeHelper;
 
-import java.util.concurrent.ExecutionException;
-
 public class MainFragment extends BaseFragment implements TabLayout.OnTabSelectedListener {
-    private ViewPager viewPager;
-    private boolean showBlankTab = false;
-
-    private static final int FALLBACK_SERVICE_ID = 0; // Youtbe
-    private static final String FALLBACK_CHANNEL_URL =
-            "https://www.youtube.com/channel/UC-9-kyTW8ZkZNDHQJ6FgpwQ";
-    private static final String FALLBACK_CHANNEL_NAME = "Music";
-    private static final String FALLBACK_KIOSK_ID = "Trending";
 
     public int currentServiceId = -1;
+    private ViewPager viewPager;
 
     /*//////////////////////////////////////////////////////////////////////////
-    // Konst
+    // Constants
     //////////////////////////////////////////////////////////////////////////*/
 
-    private static final int KIOSK_MENU_OFFSETT = 2000;
+    private static final int FALLBACK_SERVICE_ID = ServiceList.YouTube.getId();
+    private static final String FALLBACK_CHANNEL_URL = "https://www.youtube.com/channel/UC-9-kyTW8ZkZNDHQJ6FgpwQ";
+    private static final String FALLBACK_CHANNEL_NAME = "Music";
+    private static final String FALLBACK_KIOSK_ID = "Trending";
+    private static final int KIOSK_MENU_OFFSET = 2000;
 
     /*//////////////////////////////////////////////////////////////////////////
     // Fragment's LifeCycle
@@ -66,9 +63,8 @@ public class MainFragment extends BaseFragment implements TabLayout.OnTabSelecte
     }
 
     @Override
-    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
-        currentServiceId = Integer.parseInt(PreferenceManager.getDefaultSharedPreferences(getActivity())
-                .getString(getString(R.string.current_service_key), "0"));
+    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
+        currentServiceId = ServiceHelper.getSelectedServiceId(activity);
         return inflater.inflate(R.layout.fragment_main, container, false);
     }
 
@@ -86,27 +82,15 @@ public class MainFragment extends BaseFragment implements TabLayout.OnTabSelecte
 
         tabLayout.setupWithViewPager(viewPager);
 
-        if(ThemeHelper.isLightThemeSelected(getActivity())) {
-            tabLayout.setBackgroundColor(getResources().getColor(R.color.light_youtube_primary_color));
-        }
+        int channelIcon = ThemeHelper.resolveResourceIdFromAttr(activity, R.attr.ic_channel);
+        int whatsHotIcon = ThemeHelper.resolveResourceIdFromAttr(activity, R.attr.ic_hot);
 
-       if(PreferenceManager.getDefaultSharedPreferences(getActivity())
-                .getString(getString(R.string.main_page_content_key), getString(R.string.blank_page_key))
-                .equals(getString(R.string.subscription_page_key))) {
-           if(ThemeHelper.isLightThemeSelected(getActivity())) {
-               tabLayout.getTabAt(0).setIcon(R.drawable.ic_channel_black_24dp);
-           } else{
-               tabLayout.getTabAt(0).setIcon(R.drawable.ic_channel_white_24dp);
-           }
-       } else {
-           if(ThemeHelper.isLightThemeSelected(getActivity())) {
-               tabLayout.getTabAt(0).setIcon(R.drawable.ic_whatshot_black_24dp);
-               tabLayout.getTabAt(1).setIcon(R.drawable.ic_channel_black_24dp);
-           } else {
-               tabLayout.getTabAt(0).setIcon(R.drawable.ic_whatshot_white_24dp);
-               tabLayout.getTabAt(1).setIcon(R.drawable.ic_channel_white_24dp);
-           }
-       }
+        if (isSubscriptionsPageOnlySelected()) {
+            tabLayout.getTabAt(0).setIcon(channelIcon);
+        } else {
+            tabLayout.getTabAt(0).setIcon(whatsHotIcon);
+            tabLayout.getTabAt(1).setIcon(channelIcon);
+        }
     }
 
     /*//////////////////////////////////////////////////////////////////////////
@@ -139,7 +123,7 @@ public class MainFragment extends BaseFragment implements TabLayout.OnTabSelecte
     public boolean onOptionsItemSelected(MenuItem item) {
         switch (item.getItemId()) {
             case R.id.action_search:
-                NavigationHelper.openSearchFragment(getFragmentManager(), 0, "");
+                NavigationHelper.openSearchFragment(getFragmentManager(), ServiceHelper.getSelectedServiceId(activity), "");
                 return true;
         }
         return super.onOptionsItemSelected(item);
@@ -164,11 +148,6 @@ public class MainFragment extends BaseFragment implements TabLayout.OnTabSelecte
 
     private class PagerAdapter extends FragmentPagerAdapter {
 
-        private int[] tabTitles = new int[]{
-                R.string.tab_main,
-                R.string.tab_subscriptions
-        };
-
         PagerAdapter(FragmentManager fm) {
             super(fm);
         }
@@ -177,13 +156,7 @@ public class MainFragment extends BaseFragment implements TabLayout.OnTabSelecte
         public Fragment getItem(int position) {
             switch (position) {
                 case 0:
-                    if(PreferenceManager.getDefaultSharedPreferences(getActivity())
-                            .getString(getString(R.string.main_page_content_key), getString(R.string.blank_page_key))
-                            .equals(getString(R.string.subscription_page_key))) {
-                        return new SubscriptionFragment();
-                    } else {
-                        return getMainPageFramgent();
-                    }
+                    return isSubscriptionsPageOnlySelected() ? new SubscriptionFragment() : getMainPageFragment();
                 case 1:
                     return new SubscriptionFragment();
                 default:
@@ -199,13 +172,7 @@ public class MainFragment extends BaseFragment implements TabLayout.OnTabSelecte
 
         @Override
         public int getCount() {
-            if(PreferenceManager.getDefaultSharedPreferences(getActivity())
-                    .getString(getString(R.string.main_page_content_key), getString(R.string.blank_page_key))
-                    .equals(getString(R.string.subscription_page_key))) {
-                return 1;
-            } else {
-                return 2;
-            }
+            return isSubscriptionsPageOnlySelected() ? 1 : 2;
         }
     }
 
@@ -213,28 +180,33 @@ public class MainFragment extends BaseFragment implements TabLayout.OnTabSelecte
     // Main page content
     //////////////////////////////////////////////////////////////////////////*/
 
-    private Fragment getMainPageFramgent() {
+    private boolean isSubscriptionsPageOnlySelected() {
+        return PreferenceManager.getDefaultSharedPreferences(activity)
+                .getString(getString(R.string.main_page_content_key), getString(R.string.blank_page_key))
+                .equals(getString(R.string.subscription_page_key));
+    }
+
+    private Fragment getMainPageFragment() {
         try {
             SharedPreferences preferences =
                     PreferenceManager.getDefaultSharedPreferences(getActivity());
             final String setMainPage = preferences.getString(getString(R.string.main_page_content_key),
-                            getString(R.string.main_page_selectd_kiosk_id));
-            if(setMainPage.equals(getString(R.string.blank_page_key))) {
+                    getString(R.string.main_page_selectd_kiosk_id));
+            if (setMainPage.equals(getString(R.string.blank_page_key))) {
                 return new BlankFragment();
-            } else if(setMainPage.equals(getString(R.string.kiosk_page_key))) {
+            } else if (setMainPage.equals(getString(R.string.kiosk_page_key))) {
                 int serviceId = preferences.getInt(getString(R.string.main_page_selected_service),
                         FALLBACK_SERVICE_ID);
                 String kioskId = preferences.getString(getString(R.string.main_page_selectd_kiosk_id),
                         FALLBACK_KIOSK_ID);
-                KioskFragment fragment = KioskFragment.getInstance(serviceId, kioskId
-                );
+                KioskFragment fragment = KioskFragment.getInstance(serviceId, kioskId);
                 fragment.useAsFrontPage(true);
                 return fragment;
-            } else if(setMainPage.equals(getString(R.string.feed_page_key))) {
+            } else if (setMainPage.equals(getString(R.string.feed_page_key))) {
                 FeedFragment fragment = new FeedFragment();
                 fragment.useAsFrontPage(true);
                 return fragment;
-            } else if(setMainPage.equals(getString(R.string.channel_page_key))) {
+            } else if (setMainPage.equals(getString(R.string.channel_page_key))) {
                 int serviceId = preferences.getInt(getString(R.string.main_page_selected_service),
                         FALLBACK_SERVICE_ID);
                 String url = preferences.getString(getString(R.string.main_page_selected_channel_url),
@@ -267,8 +239,8 @@ public class MainFragment extends BaseFragment implements TabLayout.OnTabSelecte
         StreamingService service = NewPipe.getService(currentServiceId);
         KioskList kl = service.getKioskList();
         int i = 0;
-        for(final String ks : kl.getAvailableKiosks()) {
-            menu.add(0, KIOSK_MENU_OFFSETT + i, Menu.NONE,
+        for (final String ks : kl.getAvailableKiosks()) {
+            menu.add(0, KIOSK_MENU_OFFSET + i, Menu.NONE,
                     KioskTranslator.getTranslatedKioskName(ks, getContext()))
                     .setOnMenuItemClickListener(new MenuItem.OnMenuItemClickListener() {
                         @Override

app/src/main/java/org/schabi/newpipe/fragments/detail/SpinnerToolbarAdapter.java

@@ -60,7 +60,7 @@ public class SpinnerToolbarAdapter extends BaseAdapter {
         ImageView woSoundIcon = convertView.findViewById(R.id.wo_sound_icon);
         TextView text = convertView.findViewById(android.R.id.text1);
         VideoStream item = (VideoStream) getItem(position);
-        text.setText(MediaFormat.getNameById(item.format) + " " + item.resolution);
+        text.setText(item.getFormat().getName() + " " + item.getResolution());
 
         int visibility = !showIconNoAudio ? View.GONE
                 : item.isVideoOnly ? View.VISIBLE

app/src/main/java/org/schabi/newpipe/fragments/detail/StackItem.java

@@ -4,7 +4,8 @@ import java.io.Serializable;
 
 class StackItem implements Serializable {
     private int serviceId;
-    private String title, url;
+    private String title;
+    private String url;
 
     StackItem(int serviceId, String url, String title) {
         this.serviceId = serviceId;

app/src/main/java/org/schabi/newpipe/fragments/detail/VideoDetailFragment.java

@@ -24,7 +24,6 @@ import android.text.util.Linkify;
 import android.util.DisplayMetrics;
 import android.util.Log;
 import android.util.TypedValue;
-import android.view.Gravity;
 import android.view.LayoutInflater;
 import android.view.Menu;
 import android.view.MenuInflater;
@@ -49,7 +48,6 @@ import org.schabi.newpipe.R;
 import org.schabi.newpipe.ReCaptchaActivity;
 import org.schabi.newpipe.download.DownloadDialog;
 import org.schabi.newpipe.extractor.InfoItem;
-import org.schabi.newpipe.extractor.MediaFormat;
 import org.schabi.newpipe.extractor.NewPipe;
 import org.schabi.newpipe.extractor.exceptions.ContentNotAvailableException;
 import org.schabi.newpipe.extractor.exceptions.ParsingException;
@@ -62,9 +60,10 @@ import org.schabi.newpipe.fragments.BackPressable;
 import org.schabi.newpipe.fragments.BaseStateFragment;
 import org.schabi.newpipe.history.HistoryListener;
 import org.schabi.newpipe.info_list.InfoItemBuilder;
-import org.schabi.newpipe.player.BackgroundPlayer;
+import org.schabi.newpipe.info_list.InfoItemDialog;
 import org.schabi.newpipe.player.MainVideoPlayer;
 import org.schabi.newpipe.player.PopupVideoPlayer;
+import org.schabi.newpipe.player.helper.PlayerHelper;
 import org.schabi.newpipe.player.old.PlayVideoActivity;
 import org.schabi.newpipe.playlist.PlayQueue;
 import org.schabi.newpipe.playlist.SinglePlayQueue;
@@ -77,6 +76,7 @@ import org.schabi.newpipe.util.ListHelper;
 import org.schabi.newpipe.util.Localization;
 import org.schabi.newpipe.util.NavigationHelper;
 import org.schabi.newpipe.util.PermissionHelper;
+import org.schabi.newpipe.util.ThemeHelper;
 
 import java.io.Serializable;
 import java.util.ArrayList;
@@ -281,7 +281,7 @@ public class VideoDetailFragment extends BaseStateFragment<StreamInfo> implement
 
         // Check if the next video label and video is visible,
         // if it is, include the two elements in the next check
-        int nextCount = currentInfo != null && currentInfo.next_video != null ? 2 : 0;
+        int nextCount = currentInfo != null && currentInfo.getNextVideo() != null ? 2 : 0;
         if (relatedStreamsView != null && relatedStreamsView.getChildCount() > INITIAL_RELATED_VIDEOS + nextCount) {
             outState.putSerializable(WAS_RELATED_EXPANDED_KEY, true);
         }
@@ -328,14 +328,22 @@ public class VideoDetailFragment extends BaseStateFragment<StreamInfo> implement
                 openPopupPlayer(false);
                 break;
             case R.id.detail_uploader_root_layout:
-                if (currentInfo.uploader_url == null || currentInfo.uploader_url.isEmpty()) {
+                if (TextUtils.isEmpty(currentInfo.getUploaderUrl())) {
                     Log.w(TAG, "Can't open channel because we got no channel URL");
                 } else {
-                    NavigationHelper.openChannelFragment(getFragmentManager(), currentInfo.service_id, currentInfo.uploader_url, currentInfo.uploader_name);
+                    NavigationHelper.openChannelFragment(
+                            getFragmentManager(),
+                            currentInfo.getServiceId(),
+                            currentInfo.getUploaderUrl(),
+                            currentInfo.getUploaderName());
                 }
                 break;
             case R.id.detail_thumbnail_root_layout:
-                openVideoPlayer();
+                if (currentInfo.video_streams.isEmpty() && currentInfo.video_only_streams.isEmpty()) {
+                    openBackgroundPlayer(false);
+                } else {
+                    openVideoPlayer();
+                }
                 break;
             case R.id.detail_title_root_layout:
                 toggleTitleAndDescription();
@@ -378,22 +386,22 @@ public class VideoDetailFragment extends BaseStateFragment<StreamInfo> implement
         if (DEBUG) Log.d(TAG, "toggleExpandRelatedVideos() called with: info = [" + info + "]");
         if (!showRelatedStreams) return;
 
-        int nextCount = info.next_video != null ? 2 : 0;
+        int nextCount = info.getNextVideo() != null ? 2 : 0;
         int initialCount = INITIAL_RELATED_VIDEOS + nextCount;
 
         if (relatedStreamsView.getChildCount() > initialCount) {
             relatedStreamsView.removeViews(initialCount, relatedStreamsView.getChildCount() - (initialCount));
-            relatedStreamExpandButton.setImageDrawable(ContextCompat.getDrawable(activity, resolveResourceIdFromAttr(R.attr.expand)));
+            relatedStreamExpandButton.setImageDrawable(ContextCompat.getDrawable(activity, ThemeHelper.resolveResourceIdFromAttr(activity, R.attr.expand)));
             return;
         }
 
         //Log.d(TAG, "toggleExpandRelatedVideos() called with: info = [" + info + "], from = [" + INITIAL_RELATED_VIDEOS + "]");
-        for (int i = INITIAL_RELATED_VIDEOS; i < info.related_streams.size(); i++) {
-            InfoItem item = info.related_streams.get(i);
+        for (int i = INITIAL_RELATED_VIDEOS; i < info.getRelatedStreams().size(); i++) {
+            InfoItem item = info.getRelatedStreams().get(i);
             //Log.d(TAG, "i = " + i);
             relatedStreamsView.addView(infoItemBuilder.buildView(relatedStreamsView, item));
         }
-        relatedStreamExpandButton.setImageDrawable(ContextCompat.getDrawable(activity, resolveResourceIdFromAttr(R.attr.collapse)));
+        relatedStreamExpandButton.setImageDrawable(ContextCompat.getDrawable(activity, ThemeHelper.resolveResourceIdFromAttr(activity, R.attr.collapse)));
     }
 
     /*//////////////////////////////////////////////////////////////////////////
@@ -457,7 +465,12 @@ public class VideoDetailFragment extends BaseStateFragment<StreamInfo> implement
         infoItemBuilder.setOnStreamSelectedListener(new InfoItemBuilder.OnInfoItemSelectedListener<StreamInfoItem>() {
             @Override
             public void selected(StreamInfoItem selectedItem) {
-                selectAndLoadVideo(selectedItem.service_id, selectedItem.url, selectedItem.name);
+                selectAndLoadVideo(selectedItem.getServiceId(), selectedItem.getUrl(), selectedItem.getName());
+            }
+
+            @Override
+            public void held(StreamInfoItem selectedItem) {
+                showStreamDialog(selectedItem);
             }
         });
 
@@ -476,6 +489,34 @@ public class VideoDetailFragment extends BaseStateFragment<StreamInfo> implement
         detailControlsPopup.setOnTouchListener(getOnControlsTouchListener());
     }
 
+    private void showStreamDialog(final StreamInfoItem item) {
+        final Context context = getContext();
+        if (context == null || context.getResources() == null || getActivity() == null) return;
+
+        final String[] commands = new String[]{
+                context.getResources().getString(R.string.enqueue_on_background),
+                context.getResources().getString(R.string.enqueue_on_popup)
+        };
+
+        final DialogInterface.OnClickListener actions = new DialogInterface.OnClickListener() {
+            @Override
+            public void onClick(DialogInterface dialogInterface, int i) {
+                switch (i) {
+                    case 0:
+                        NavigationHelper.enqueueOnBackgroundPlayer(context, new SinglePlayQueue(item));
+                        break;
+                    case 1:
+                        NavigationHelper.enqueueOnPopupPlayer(getActivity(), new SinglePlayQueue(item));
+                        break;
+                    default:
+                        break;
+                }
+            }
+        };
+
+        new InfoItemDialog(getActivity(), item, commands, actions).show();
+    }
+
     private View.OnTouchListener getOnControlsTouchListener() {
         return new View.OnTouchListener() {
             @Override
@@ -497,35 +538,35 @@ public class VideoDetailFragment extends BaseStateFragment<StreamInfo> implement
 
     private void initThumbnailViews(StreamInfo info) {
         thumbnailImageView.setImageResource(R.drawable.dummy_thumbnail_dark);
-        if (info.thumbnail_url != null && !info.thumbnail_url.isEmpty()) {
-            imageLoader.displayImage(info.thumbnail_url, thumbnailImageView, DISPLAY_THUMBNAIL_OPTIONS, new SimpleImageLoadingListener() {
+        if (!TextUtils.isEmpty(info.getThumbnailUrl())) {
+            imageLoader.displayImage(info.getThumbnailUrl(), thumbnailImageView, DISPLAY_THUMBNAIL_OPTIONS, new SimpleImageLoadingListener() {
                 @Override
                 public void onLoadingFailed(String imageUri, View view, FailReason failReason) {
-                    ErrorActivity.reportError(activity, failReason.getCause(), null, activity.findViewById(android.R.id.content), ErrorActivity.ErrorInfo.make(UserAction.LOAD_IMAGE, NewPipe.getNameOfService(currentInfo.service_id), imageUri, R.string.could_not_load_thumbnails));
+                    ErrorActivity.reportError(activity, failReason.getCause(), null, activity.findViewById(android.R.id.content), ErrorActivity.ErrorInfo.make(UserAction.LOAD_IMAGE, NewPipe.getNameOfService(currentInfo.getServiceId()), imageUri, R.string.could_not_load_thumbnails));
                 }
             });
         }
-
-        if (info.uploader_avatar_url != null && !info.uploader_avatar_url.isEmpty()) {
-            imageLoader.displayImage(info.uploader_avatar_url, uploaderThumb, DISPLAY_AVATAR_OPTIONS);
+        
+        if (!TextUtils.isEmpty(info.getUploaderAvatarUrl())) {
+            imageLoader.displayImage(info.getUploaderAvatarUrl(), uploaderThumb, DISPLAY_AVATAR_OPTIONS);
         }
     }
 
     private void initRelatedVideos(StreamInfo info) {
         if (relatedStreamsView.getChildCount() > 0) relatedStreamsView.removeAllViews();
 
-        if (info.next_video != null && showRelatedStreams) {
+        if (info.getNextVideo() != null && showRelatedStreams) {
             nextStreamTitle.setVisibility(View.VISIBLE);
-            relatedStreamsView.addView(infoItemBuilder.buildView(relatedStreamsView, info.next_video));
+            relatedStreamsView.addView(infoItemBuilder.buildView(relatedStreamsView, info.getNextVideo()));
             relatedStreamsView.addView(getSeparatorView());
             relatedStreamRootLayout.setVisibility(View.VISIBLE);
         } else nextStreamTitle.setVisibility(View.GONE);
 
         if (info.related_streams != null && !info.related_streams.isEmpty() && showRelatedStreams) {
             //long first = System.nanoTime(), each;
-            int to = info.related_streams.size() >= INITIAL_RELATED_VIDEOS ? INITIAL_RELATED_VIDEOS : info.related_streams.size();
+            int to = info.getRelatedStreams().size() >= INITIAL_RELATED_VIDEOS ? INITIAL_RELATED_VIDEOS : info.getRelatedStreams().size();
             for (int i = 0; i < to; i++) {
-                InfoItem item = info.related_streams.get(i);
+                InfoItem item = info.getRelatedStreams().get(i);
                 //each = System.nanoTime();
                 relatedStreamsView.addView(infoItemBuilder.buildView(relatedStreamsView, item));
                 //if (DEBUG) Log.d(TAG, "each took " + ((System.nanoTime() - each) / 1000000L) + "ms");
@@ -535,9 +576,9 @@ public class VideoDetailFragment extends BaseStateFragment<StreamInfo> implement
             relatedStreamRootLayout.setVisibility(View.VISIBLE);
             relatedStreamExpandButton.setVisibility(View.VISIBLE);
 
-            relatedStreamExpandButton.setImageDrawable(ContextCompat.getDrawable(activity, resolveResourceIdFromAttr(R.attr.expand)));
+            relatedStreamExpandButton.setImageDrawable(ContextCompat.getDrawable(activity, ThemeHelper.resolveResourceIdFromAttr(activity, R.attr.expand)));
         } else {
-            if (info.next_video == null) relatedStreamRootLayout.setVisibility(View.GONE);
+            if (info.getNextVideo() == null) relatedStreamRootLayout.setVisibility(View.GONE);
             relatedStreamExpandButton.setVisibility(View.GONE);
         }
     }
@@ -581,26 +622,14 @@ public class VideoDetailFragment extends BaseStateFragment<StreamInfo> implement
 
     private void setupActionBarHandler(final StreamInfo info) {
         if (DEBUG) Log.d(TAG, "setupActionBarHandler() called with: info = [" + info + "]");
-        sortedStreamVideosList = new ArrayList<>(ListHelper.getSortedStreamVideosList(activity, info.video_streams, info.video_only_streams, false));
+        sortedStreamVideosList = new ArrayList<>(ListHelper.getSortedStreamVideosList(activity, info.getVideoStreams(), info.getVideoOnlyStreams(), false));
         actionBarHandler.setupStreamList(sortedStreamVideosList, spinnerToolbar);
-        actionBarHandler.setOnShareListener(new ActionBarHandler.OnActionListener() {
-            @Override
-            public void onActionSelected(int selectedStreamId) {
-                Intent intent = new Intent();
-                intent.setAction(Intent.ACTION_SEND);
-                intent.putExtra(Intent.EXTRA_TEXT, info.url);
-                intent.setType("text/plain");
-                startActivity(Intent.createChooser(intent, activity.getString(R.string.share_dialog_title)));
-            }
-        });
+        actionBarHandler.setOnShareListener(selectedStreamId -> shareUrl(info.name, info.url));
 
         actionBarHandler.setOnOpenInBrowserListener(new ActionBarHandler.OnActionListener() {
             @Override
             public void onActionSelected(int selectedStreamId) {
-                Intent intent = new Intent();
-                intent.setAction(Intent.ACTION_VIEW);
-                intent.setData(Uri.parse(info.url));
-                startActivity(Intent.createChooser(intent, activity.getString(R.string.choose_browser)));
+                openUrlInBrowser(info.getUrl());
             }
         });
 
@@ -608,7 +637,7 @@ public class VideoDetailFragment extends BaseStateFragment<StreamInfo> implement
             @Override
             public void onActionSelected(int selectedStreamId) {
                 try {
-                    NavigationHelper.playWithKore(activity, Uri.parse(info.url.replace("https", "http")));
+                    NavigationHelper.playWithKore(activity, Uri.parse(info.getUrl().replace("https", "http")));
                     if(activity instanceof HistoryListener) {
                         ((HistoryListener) activity).onVideoPlayed(info, null);
                     }
@@ -707,7 +736,7 @@ public class VideoDetailFragment extends BaseStateFragment<StreamInfo> implement
     public void prepareAndHandleInfo(final StreamInfo info, boolean scrollToTop) {
         if (DEBUG) Log.d(TAG, "prepareAndHandleInfo() called with: info = [" + info + "], scrollToTop = [" + scrollToTop + "]");
 
-        setInitialData(info.service_id, info.url, info.name);
+        setInitialData(info.getServiceId(), info.getUrl(), info.getName());
         pushToStack(serviceId, url, name);
         showLoading();
 
@@ -763,7 +792,7 @@ public class VideoDetailFragment extends BaseStateFragment<StreamInfo> implement
     //////////////////////////////////////////////////////////////////////////*/
 
     private void openBackgroundPlayer(final boolean append) {
-        AudioStream audioStream = currentInfo.audio_streams.get(ListHelper.getDefaultAudioFormat(activity, currentInfo.audio_streams));
+        AudioStream audioStream = currentInfo.getAudioStreams().get(ListHelper.getDefaultAudioFormat(activity, currentInfo.getAudioStreams()));
 
         if (activity instanceof HistoryListener) {
             ((HistoryListener) activity).onAudioPlayed(currentInfo, audioStream);
@@ -775,16 +804,13 @@ public class VideoDetailFragment extends BaseStateFragment<StreamInfo> implement
         if (!useExternalAudioPlayer && android.os.Build.VERSION.SDK_INT >= 16) {
             openNormalBackgroundPlayer(append);
         } else {
-            openExternalBackgroundPlayer(audioStream);
+            NavigationHelper.playOnExternalPlayer(activity, currentInfo.getName(), currentInfo.getUploaderName(), audioStream);
         }
     }
 
     private void openPopupPlayer(final boolean append) {
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M && !PermissionHelper.checkSystemAlertWindowPermission(activity)) {
-            Toast toast = Toast.makeText(activity, R.string.msg_popup_permission, Toast.LENGTH_LONG);
-            TextView messageView = toast.getView().findViewById(android.R.id.message);
-            if (messageView != null) messageView.setGravity(Gravity.CENTER);
-            toast.show();
+        if (!PermissionHelper.isPopupEnabled(activity)) {
+            PermissionHelper.showPopupEnablementToast(activity);
             return;
         }
 
@@ -792,16 +818,16 @@ public class VideoDetailFragment extends BaseStateFragment<StreamInfo> implement
             ((HistoryListener) activity).onVideoPlayed(currentInfo, getSelectedVideoStream());
         }
 
-        final PlayQueue playQueue = new SinglePlayQueue(currentInfo);
-        final Intent intent;
+        final PlayQueue itemQueue = new SinglePlayQueue(currentInfo);
         if (append) {
-            Toast.makeText(activity, R.string.popup_playing_append, Toast.LENGTH_SHORT).show();
-            intent = NavigationHelper.getPlayerEnqueueIntent(activity, PopupVideoPlayer.class, playQueue);
+            NavigationHelper.enqueueOnPopupPlayer(activity, itemQueue);
         } else {
             Toast.makeText(activity, R.string.popup_playing_toast, Toast.LENGTH_SHORT).show();
-            intent = NavigationHelper.getPlayerIntent(activity, PopupVideoPlayer.class, playQueue, getSelectedVideoStream().resolution);
+            final Intent intent = NavigationHelper.getPlayerIntent(
+                    activity, PopupVideoPlayer.class, itemQueue, getSelectedVideoStream().resolution
+            );
+            activity.startService(intent);
         }
-        activity.startService(intent);
     }
 
     private void openVideoPlayer() {
@@ -812,104 +838,39 @@ public class VideoDetailFragment extends BaseStateFragment<StreamInfo> implement
         }
 
         if (PreferenceManager.getDefaultSharedPreferences(activity).getBoolean(this.getString(R.string.use_external_video_player_key), false)) {
-            openExternalVideoPlayer(selectedVideoStream);
+            NavigationHelper.playOnExternalPlayer(activity, currentInfo.getName(), currentInfo.getUploaderName(), selectedVideoStream);
         } else {
             openNormalPlayer(selectedVideoStream);
         }
     }
 
-
     private void openNormalBackgroundPlayer(final boolean append) {
-        final PlayQueue playQueue = new SinglePlayQueue(currentInfo);
+        final PlayQueue itemQueue = new SinglePlayQueue(currentInfo);
         if (append) {
-            activity.startService(NavigationHelper.getPlayerEnqueueIntent(activity, BackgroundPlayer.class, playQueue));
-            Toast.makeText(activity, R.string.background_player_append, Toast.LENGTH_SHORT).show();
+            NavigationHelper.enqueueOnBackgroundPlayer(activity, itemQueue);
         } else {
-            activity.startService(NavigationHelper.getPlayerIntent(activity, BackgroundPlayer.class, playQueue));
-            Toast.makeText(activity, R.string.background_player_playing_toast, Toast.LENGTH_SHORT).show();
-        }
-    }
-
-    private void openExternalBackgroundPlayer(AudioStream audioStream) {
-        Intent intent;
-        intent = new Intent();
-        try {
-            intent.setAction(Intent.ACTION_VIEW);
-            intent.setDataAndType(Uri.parse(audioStream.url), MediaFormat.getMimeById(audioStream.format));
-            intent.putExtra(Intent.EXTRA_TITLE, currentInfo.name);
-            intent.putExtra("title", currentInfo.name);
-            activity.startActivity(intent);
-        } catch (Exception e) {
-            e.printStackTrace();
-            AlertDialog.Builder builder = new AlertDialog.Builder(activity);
-            builder.setMessage(R.string.no_player_found)
-                    .setPositiveButton(R.string.install, new DialogInterface.OnClickListener() {
-                        @Override
-                        public void onClick(DialogInterface dialog, int which) {
-                            Intent intent = new Intent();
-                            intent.setAction(Intent.ACTION_VIEW);
-                            intent.setData(Uri.parse(activity.getString(R.string.fdroid_vlc_url)));
-                            activity.startActivity(intent);
-                        }
-                    })
-                    .setNegativeButton(R.string.cancel, new DialogInterface.OnClickListener() {
-                        @Override
-                        public void onClick(DialogInterface dialog, int which) {
-                            Log.i(TAG, "You unlocked a secret unicorn.");
-                        }
-                    });
-            builder.create().show();
-            Log.e(TAG, "Either no Streaming player for audio was installed, or something important crashed:");
-            e.printStackTrace();
+            NavigationHelper.playOnBackgroundPlayer(activity, itemQueue);
         }
     }
 
     private void openNormalPlayer(VideoStream selectedVideoStream) {
         Intent mIntent;
-        boolean useOldPlayer = PreferenceManager.getDefaultSharedPreferences(activity).getBoolean(getString(R.string.use_old_player_key), false)
-                || (Build.VERSION.SDK_INT < 16);
+        boolean useOldPlayer = PlayerHelper.isUsingOldPlayer(activity) || (Build.VERSION.SDK_INT < 16);
         if (!useOldPlayer) {
             // ExoPlayer
             final PlayQueue playQueue = new SinglePlayQueue(currentInfo);
-            mIntent = NavigationHelper.getPlayerIntent(activity, MainVideoPlayer.class, playQueue, getSelectedVideoStream().resolution);
+            mIntent = NavigationHelper.getPlayerIntent(activity, MainVideoPlayer.class, playQueue, getSelectedVideoStream().getResolution());
         } else {
             // Internal Player
             mIntent = new Intent(activity, PlayVideoActivity.class)
-                    .putExtra(PlayVideoActivity.VIDEO_TITLE, currentInfo.name)
-                    .putExtra(PlayVideoActivity.STREAM_URL, selectedVideoStream.url)
-                    .putExtra(PlayVideoActivity.VIDEO_URL, currentInfo.url)
-                    .putExtra(PlayVideoActivity.START_POSITION, currentInfo.start_position);
+                    .putExtra(PlayVideoActivity.VIDEO_TITLE, currentInfo.getName())
+                    .putExtra(PlayVideoActivity.STREAM_URL, selectedVideoStream.getUrl())
+                    .putExtra(PlayVideoActivity.VIDEO_URL, currentInfo.getUrl())
+                    .putExtra(PlayVideoActivity.START_POSITION, currentInfo.getStartPosition());
         }
         startActivity(mIntent);
     }
 
-    private void openExternalVideoPlayer(VideoStream selectedVideoStream) {
-        // External Player
-        Intent intent = new Intent();
-        try {
-            intent.setAction(Intent.ACTION_VIEW)
-                    .setDataAndType(Uri.parse(selectedVideoStream.url), MediaFormat.getMimeById(selectedVideoStream.format))
-                    .putExtra(Intent.EXTRA_TITLE, currentInfo.name)
-                    .putExtra("title", currentInfo.name);
-            this.startActivity(intent);
-        } catch (Exception e) {
-            e.printStackTrace();
-            AlertDialog.Builder builder = new AlertDialog.Builder(activity);
-            builder.setMessage(R.string.no_player_found)
-                    .setPositiveButton(R.string.install, new DialogInterface.OnClickListener() {
-                        @Override
-                        public void onClick(DialogInterface dialog, int which) {
-                            Intent intent = new Intent()
-                                    .setAction(Intent.ACTION_VIEW)
-                                    .setData(Uri.parse(getString(R.string.fdroid_vlc_url)));
-                            startActivity(intent);
-                        }
-                    })
-                    .setNegativeButton(R.string.cancel, null);
-            builder.create().show();
-        }
-    }
-
     /*//////////////////////////////////////////////////////////////////////////
     // Utils
     //////////////////////////////////////////////////////////////////////////*/
@@ -1063,20 +1024,28 @@ public class VideoDetailFragment extends BaseStateFragment<StreamInfo> implement
     public void handleResult(@NonNull StreamInfo info) {
         super.handleResult(info);
 
-        setInitialData(info.service_id, info.url, info.name);
+        setInitialData(info.getServiceId(), info.getUrl(), info.getName());
         pushToStack(serviceId, url, name);
 
         animateView(thumbnailPlayButton, true, 200);
         videoTitleTextView.setText(name);
 
-        if (!TextUtils.isEmpty(info.uploader_name)) uploaderTextView.setText(info.uploader_name);
-        uploaderTextView.setVisibility(!TextUtils.isEmpty(info.uploader_name) ? View.VISIBLE : View.GONE);
+        if (!TextUtils.isEmpty(info.getUploaderName())) {
+            uploaderTextView.setText(info.getUploaderName());
+            uploaderTextView.setVisibility(View.VISIBLE);
+        } else {
+            uploaderTextView.setVisibility(View.GONE);
+        }
         uploaderThumb.setImageDrawable(ContextCompat.getDrawable(activity, R.drawable.buddy));
 
-        if (info.view_count >= 0) videoCountView.setText(Localization.localizeViewCount(activity, info.view_count));
-        videoCountView.setVisibility(info.view_count >= 0 ? View.VISIBLE : View.GONE);
+        if (info.getViewCount() >= 0) {
+            videoCountView.setText(Localization.localizeViewCount(activity, info.getViewCount()));
+            videoCountView.setVisibility(View.VISIBLE);
+        } else {
+            videoCountView.setVisibility(View.GONE);
+        }
 
-        if (info.dislike_count == -1 && info.like_count == -1) {
+        if (info.getDislikeCount() == -1 && info.getLikeCount() == -1) {
             thumbsDownImageView.setVisibility(View.VISIBLE);
             thumbsUpImageView.setVisibility(View.VISIBLE);
             thumbsUpTextView.setVisibility(View.GONE);
@@ -1084,14 +1053,23 @@ public class VideoDetailFragment extends BaseStateFragment<StreamInfo> implement
 
             thumbsDisabledTextView.setVisibility(View.VISIBLE);
         } else {
-            if (info.dislike_count >= 0) thumbsDownTextView.setText(Localization.shortCount(activity, info.dislike_count));
-            thumbsDownTextView.setVisibility(info.dislike_count >= 0 ? View.VISIBLE : View.GONE);
-            thumbsDownImageView.setVisibility(info.dislike_count >= 0 ? View.VISIBLE : View.GONE);
-
-            if (info.like_count >= 0) thumbsUpTextView.setText(Localization.shortCount(activity, info.like_count));
-            thumbsUpTextView.setVisibility(info.like_count >= 0 ? View.VISIBLE : View.GONE);
-            thumbsUpImageView.setVisibility(info.like_count >= 0 ? View.VISIBLE : View.GONE);
+            if (info.getDislikeCount() >= 0) {
+                thumbsDownTextView.setText(Localization.shortCount(activity, info.getDislikeCount()));
+                thumbsDownTextView.setVisibility(View.VISIBLE);
+                thumbsDownImageView.setVisibility(View.VISIBLE);
+            } else {
+                thumbsDownTextView.setVisibility(View.GONE);
+                thumbsDownImageView.setVisibility(View.GONE);
+            }
 
+            if (info.getLikeCount() >= 0) {
+                thumbsUpTextView.setText(Localization.shortCount(activity, info.getLikeCount()));
+                thumbsUpTextView.setVisibility(View.VISIBLE);
+                thumbsUpImageView.setVisibility(View.VISIBLE);
+            } else {
+                thumbsUpTextView.setVisibility(View.GONE);
+                thumbsUpImageView.setVisibility(View.GONE);
+            }
             thumbsDisabledTextView.setVisibility(View.GONE);
         }
 
@@ -1100,10 +1078,10 @@ public class VideoDetailFragment extends BaseStateFragment<StreamInfo> implement
         videoTitleToggleArrow.setImageResource(R.drawable.arrow_down);
         videoDescriptionView.setVisibility(View.GONE);
         videoDescriptionRootLayout.setVisibility(View.GONE);
-        if (!TextUtils.isEmpty(info.upload_date)) {
-            videoUploadDateView.setText(Localization.localizeDate(activity, info.upload_date));
+        if (!TextUtils.isEmpty(info.getUploadDate())) {
+            videoUploadDateView.setText(Localization.localizeDate(activity, info.getUploadDate()));
         }
-        prepareDescription(info.description);
+        prepareDescription(info.getDescription());
 
         animateView(spinnerToolbar, true, 500);
         setupActionBarHandler(info);
@@ -1113,10 +1091,17 @@ public class VideoDetailFragment extends BaseStateFragment<StreamInfo> implement
             toggleExpandRelatedVideos(currentInfo);
             wasRelatedStreamsExpanded = false;
         }
-        setTitleToUrl(info.service_id, info.url, info.name);
+        setTitleToUrl(info.getServiceId(), info.getUrl(), info.getName());
 
-        if (!info.errors.isEmpty()) {
-            showSnackBarError(info.errors, UserAction.REQUESTED_STREAM, NewPipe.getNameOfService(info.service_id), info.url, 0);
+        if (!info.getErrors().isEmpty()) {
+            showSnackBarError(info.getErrors(), UserAction.REQUESTED_STREAM, NewPipe.getNameOfService(info.getServiceId()), info.getUrl(), 0);
+        }
+
+        if (info.video_streams.isEmpty() && info.video_only_streams.isEmpty()) {
+            detailControlsBackground.setVisibility(View.GONE);
+            detailControlsPopup.setVisibility(View.GONE);
+            spinnerToolbar.setVisibility(View.GONE);
+            thumbnailPlayButton.setImageResource(R.drawable.ic_headset_white_24dp);
         }
 
         if (autoPlayEnabled) {

app/src/main/java/org/schabi/newpipe/fragments/list/BaseListFragment.java

@@ -1,15 +1,21 @@
 package org.schabi.newpipe.fragments.list;
 
+import android.app.Activity;
 import android.content.Context;
+import android.content.DialogInterface;
+import android.os.Build;
 import android.os.Bundle;
 import android.support.annotation.NonNull;
 import android.support.v7.app.ActionBar;
 import android.support.v7.widget.LinearLayoutManager;
 import android.support.v7.widget.RecyclerView;
 import android.util.Log;
+import android.view.Gravity;
 import android.view.Menu;
 import android.view.MenuInflater;
 import android.view.View;
+import android.widget.TextView;
+import android.widget.Toast;
 
 import org.schabi.newpipe.R;
 import org.schabi.newpipe.extractor.InfoItem;
@@ -19,8 +25,11 @@ import org.schabi.newpipe.extractor.stream.StreamInfoItem;
 import org.schabi.newpipe.fragments.BaseStateFragment;
 import org.schabi.newpipe.fragments.OnScrollBelowItemsListener;
 import org.schabi.newpipe.info_list.InfoItemBuilder;
+import org.schabi.newpipe.info_list.InfoItemDialog;
 import org.schabi.newpipe.info_list.InfoListAdapter;
+import org.schabi.newpipe.playlist.SinglePlayQueue;
 import org.schabi.newpipe.util.NavigationHelper;
+import org.schabi.newpipe.util.PermissionHelper;
 import org.schabi.newpipe.util.StateSaver;
 
 import java.util.List;
@@ -137,7 +146,12 @@ public abstract class BaseListFragment<I, N> extends BaseStateFragment<I> implem
                 onItemSelected(selectedItem);
                 NavigationHelper.openVideoDetailFragment(
                         useAsFrontPage?getParentFragment().getFragmentManager():getFragmentManager(),
-                        selectedItem.service_id, selectedItem.url, selectedItem.name);
+                        selectedItem.getServiceId(), selectedItem.getUrl(), selectedItem.getName());
+            }
+
+            @Override
+            public void held(StreamInfoItem selectedItem) {
+                showStreamDialog(selectedItem);
             }
         });
 
@@ -147,8 +161,11 @@ public abstract class BaseListFragment<I, N> extends BaseStateFragment<I> implem
                 onItemSelected(selectedItem);
                 NavigationHelper.openChannelFragment(
                         useAsFrontPage?getParentFragment().getFragmentManager():getFragmentManager(),
-                        selectedItem.service_id, selectedItem.url, selectedItem.name);
+                        selectedItem.getServiceId(), selectedItem.getUrl(), selectedItem.getName());
             }
+
+            @Override
+            public void held(ChannelInfoItem selectedItem) {}
         });
 
         infoListAdapter.setOnPlaylistSelectedListener(new InfoItemBuilder.OnInfoItemSelectedListener<PlaylistInfoItem>() {
@@ -157,8 +174,11 @@ public abstract class BaseListFragment<I, N> extends BaseStateFragment<I> implem
                 onItemSelected(selectedItem);
                 NavigationHelper.openPlaylistFragment(
                         useAsFrontPage?getParentFragment().getFragmentManager():getFragmentManager(),
-                        selectedItem.service_id, selectedItem.url, selectedItem.name);
+                        selectedItem.getServiceId(), selectedItem.getUrl(), selectedItem.getName());
             }
+
+            @Override
+            public void held(PlaylistInfoItem selectedItem) {}
         });
 
         itemsList.clearOnScrollListeners();
@@ -176,6 +196,34 @@ public abstract class BaseListFragment<I, N> extends BaseStateFragment<I> implem
         }
     }
 
+    protected void showStreamDialog(final StreamInfoItem item) {
+        final Context context = getContext();
+        final Activity activity = getActivity();
+        if (context == null || context.getResources() == null || getActivity() == null) return;
+
+        final String[] commands = new String[]{
+                context.getResources().getString(R.string.enqueue_on_background),
+                context.getResources().getString(R.string.enqueue_on_popup)
+        };
+
+        final DialogInterface.OnClickListener actions = new DialogInterface.OnClickListener() {
+            @Override
+            public void onClick(DialogInterface dialogInterface, int i) {
+                switch (i) {
+                    case 0:
+                        NavigationHelper.enqueueOnBackgroundPlayer(context, new SinglePlayQueue(item));
+                        break;
+                    case 1:
+                        NavigationHelper.enqueueOnPopupPlayer(activity, new SinglePlayQueue(item));
+                        break;
+                    default:
+                        break;
+                }
+            }
+        };
+
+        new InfoItemDialog(getActivity(), item, commands, actions).show();
+    }
     /*//////////////////////////////////////////////////////////////////////////
     // Menu
     //////////////////////////////////////////////////////////////////////////*/

app/src/main/java/org/schabi/newpipe/fragments/list/BaseListInfoFragment.java

@@ -84,17 +84,6 @@ public abstract class BaseListInfoFragment<I extends ListInfo> extends BaseListF
         currentNextItemsUrl = (String) savedObjects.poll();
     }
 
-    /*//////////////////////////////////////////////////////////////////////////
-    // Utils
-    //////////////////////////////////////////////////////////////////////////*/
-
-    public void setTitle(String title) {
-        Log.d(TAG, "setTitle() called with: title = [" + title + "]");
-        if (activity.getSupportActionBar() != null) {
-            activity.getSupportActionBar().setTitle(title);
-        }
-    }
-
     /*//////////////////////////////////////////////////////////////////////////
     // Load and handle
     //////////////////////////////////////////////////////////////////////////*/
@@ -124,20 +113,12 @@ public abstract class BaseListInfoFragment<I extends ListInfo> extends BaseListF
         currentWorker = loadResult(forceLoad)
                 .subscribeOn(Schedulers.io())
                 .observeOn(AndroidSchedulers.mainThread())
-                .subscribe(new Consumer<I>() {
-                    @Override
-                    public void accept(@NonNull I result) throws Exception {
-                        isLoading.set(false);
-                        currentInfo = result;
-                        currentNextItemsUrl = result.next_streams_url;
-                        handleResult(result);
-                    }
-                }, new Consumer<Throwable>() {
-                    @Override
-                    public void accept(@NonNull Throwable throwable) throws Exception {
-                        onError(throwable);
-                    }
-                });
+                .subscribe((@NonNull I result) -> {
+                    isLoading.set(false);
+                    currentInfo = result;
+                    currentNextItemsUrl = result.next_streams_url;
+                    handleResult(result);
+                }, (@NonNull Throwable throwable) -> onError(throwable));
     }
 
     /**
@@ -153,18 +134,12 @@ public abstract class BaseListInfoFragment<I extends ListInfo> extends BaseListF
         currentWorker = loadMoreItemsLogic()
                 .subscribeOn(Schedulers.io())
                 .observeOn(AndroidSchedulers.mainThread())
-                .subscribe(new Consumer<ListExtractor.NextItemsResult>() {
-                    @Override
-                    public void accept(@io.reactivex.annotations.NonNull ListExtractor.NextItemsResult nextItemsResult) throws Exception {
-                        isLoading.set(false);
-                        handleNextItems(nextItemsResult);
-                    }
-                }, new Consumer<Throwable>() {
-                    @Override
-                    public void accept(@io.reactivex.annotations.NonNull Throwable throwable) throws Exception {
-                        isLoading.set(false);
-                        onError(throwable);
-                    }
+                .subscribe((@io.reactivex.annotations.NonNull ListExtractor.NextItemsResult nextItemsResult) -> {
+                    isLoading.set(false);
+                    handleNextItems(nextItemsResult);
+                }, (@io.reactivex.annotations.NonNull Throwable throwable) -> {
+                    isLoading.set(false);
+                    onError(throwable);
                 });
     }
 
@@ -190,8 +165,8 @@ public abstract class BaseListInfoFragment<I extends ListInfo> extends BaseListF
     public void handleResult(@NonNull I result) {
         super.handleResult(result);
 
-        url = result.url;
-        name = result.name;
+        url = result.getUrl();
+        name = result.getName();
         setTitle(name);
 
         if (infoListAdapter.getItemsList().size() == 0) {

app/src/main/java/org/schabi/newpipe/fragments/list/channel/ChannelFragment.java

@@ -1,6 +1,8 @@
 package org.schabi.newpipe.fragments.list.channel;
 
+import android.app.Activity;
 import android.content.Context;
+import android.content.DialogInterface;
 import android.content.Intent;
 import android.net.Uri;
 import android.os.Bundle;
@@ -18,6 +20,7 @@ import android.view.View;
 import android.view.ViewGroup;
 import android.widget.Button;
 import android.widget.ImageView;
+import android.widget.LinearLayout;
 import android.widget.TextView;
 
 import com.jakewharton.rxbinding2.view.RxView;
@@ -28,12 +31,18 @@ import org.schabi.newpipe.extractor.ListExtractor;
 import org.schabi.newpipe.extractor.NewPipe;
 import org.schabi.newpipe.extractor.channel.ChannelInfo;
 import org.schabi.newpipe.extractor.exceptions.ExtractionException;
+import org.schabi.newpipe.extractor.stream.StreamInfoItem;
 import org.schabi.newpipe.fragments.list.BaseListInfoFragment;
 import org.schabi.newpipe.fragments.subscription.SubscriptionService;
+import org.schabi.newpipe.info_list.InfoItemDialog;
+import org.schabi.newpipe.playlist.ChannelPlayQueue;
+import org.schabi.newpipe.playlist.PlayQueue;
+import org.schabi.newpipe.playlist.SinglePlayQueue;
 import org.schabi.newpipe.report.UserAction;
 import org.schabi.newpipe.util.AnimationUtils;
 import org.schabi.newpipe.util.ExtractorHelper;
 import org.schabi.newpipe.util.Localization;
+import org.schabi.newpipe.util.NavigationHelper;
 
 import java.util.List;
 import java.util.concurrent.TimeUnit;
@@ -68,6 +77,11 @@ public class ChannelFragment extends BaseListInfoFragment<ChannelInfo> {
     private TextView headerTitleView;
     private TextView headerSubscribersTextView;
     private Button headerSubscribeButton;
+    private View playlistCtrl;
+
+    private LinearLayout headerPlayAllButton;
+    private LinearLayout headerPopupButton;
+    private LinearLayout headerBackgroundButton;
 
     private MenuItem menuRssButton;
 
@@ -87,11 +101,7 @@ public class ChannelFragment extends BaseListInfoFragment<ChannelInfo> {
         if(activity != null
                 && useAsFrontPage
                 && isVisibleToUser) {
-            try {
-                activity.getSupportActionBar().setTitle(currentInfo.name);
-            } catch (Exception e) {
-                onError(e);
-            }
+            setTitle(currentInfo != null ? currentInfo.getName() : name);
         }
     }
 
@@ -124,10 +134,58 @@ public class ChannelFragment extends BaseListInfoFragment<ChannelInfo> {
         headerTitleView = headerRootLayout.findViewById(R.id.channel_title_view);
         headerSubscribersTextView = headerRootLayout.findViewById(R.id.channel_subscriber_view);
         headerSubscribeButton = headerRootLayout.findViewById(R.id.channel_subscribe_button);
+        playlistCtrl = headerRootLayout.findViewById(R.id.playlist_control);
+
+
+        headerPlayAllButton = headerRootLayout.findViewById(R.id.playlist_ctrl_play_all_button);
+        headerPopupButton = headerRootLayout.findViewById(R.id.playlist_ctrl_play_popup_button);
+        headerBackgroundButton = headerRootLayout.findViewById(R.id.playlist_ctrl_play_bg_button);
 
         return headerRootLayout;
     }
 
+    @Override
+    protected void showStreamDialog(final StreamInfoItem item) {
+        final Activity activity = getActivity();
+        final Context context = getContext();
+        if (context == null || context.getResources() == null || getActivity() == null) return;
+
+        final String[] commands = new String[]{
+                context.getResources().getString(R.string.enqueue_on_background),
+                context.getResources().getString(R.string.enqueue_on_popup),
+                context.getResources().getString(R.string.start_here_on_main),
+                context.getResources().getString(R.string.start_here_on_background),
+                context.getResources().getString(R.string.start_here_on_popup),
+        };
+
+        final DialogInterface.OnClickListener actions = new DialogInterface.OnClickListener() {
+            @Override
+            public void onClick(DialogInterface dialogInterface, int i) {
+                final int index = Math.max(infoListAdapter.getItemsList().indexOf(item), 0);
+                switch (i) {
+                    case 0:
+                        NavigationHelper.enqueueOnBackgroundPlayer(context, new SinglePlayQueue(item));
+                        break;
+                    case 1:
+                        NavigationHelper.enqueueOnPopupPlayer(activity, new SinglePlayQueue(item));
+                        break;
+                    case 2:
+                        NavigationHelper.playOnMainPlayer(context, getPlayQueue(index));
+                        break;
+                    case 3:
+                        NavigationHelper.playOnBackgroundPlayer(context, getPlayQueue(index));
+                        break;
+                    case 4:
+                        NavigationHelper.playOnPopupPlayer(activity, getPlayQueue(index));
+                        break;
+                    default:
+                        break;
+                }
+            }
+        };
+
+        new InfoItemDialog(getActivity(), item, commands, actions).show();
+    }
     /*//////////////////////////////////////////////////////////////////////////
     // Menu
     //////////////////////////////////////////////////////////////////////////*/
@@ -144,7 +202,7 @@ public class ChannelFragment extends BaseListInfoFragment<ChannelInfo> {
             if (DEBUG) Log.d(TAG, "onCreateOptionsMenu() called with: menu = [" + menu + "], inflater = [" + inflater + "]");
             menuRssButton = menu.findItem(R.id.menu_item_rss);
             if (currentInfo != null) {
-                menuRssButton.setVisible(!TextUtils.isEmpty(currentInfo.feed_url));
+                menuRssButton.setVisible(!TextUtils.isEmpty(currentInfo.getFeedUrl()));
             }
 
         }
@@ -153,23 +211,11 @@ public class ChannelFragment extends BaseListInfoFragment<ChannelInfo> {
     private void openRssFeed() {
         final ChannelInfo info = currentInfo;
         if(info != null) {
-            Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(info.feed_url));
+            Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(info.getFeedUrl()));
             startActivity(intent);
         }
     }
 
-    private void openChannelUriInBrowser() {
-        Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
-        startActivity(intent);
-    }
-
-    private void shareChannelUri() {
-        Intent intent = new Intent(Intent.ACTION_SEND);
-        intent.setType("text/plain");
-        intent.putExtra(Intent.EXTRA_TEXT, url);
-        startActivity(Intent.createChooser(intent, getString(R.string.share_dialog_title)));
-    }
-
     @Override
     public boolean onOptionsItemSelected(MenuItem item) {
         switch (item.getItemId()) {
@@ -177,10 +223,10 @@ public class ChannelFragment extends BaseListInfoFragment<ChannelInfo> {
                 openRssFeed();
                 break;
             case R.id.menu_item_openInBrowser:
-                openChannelUriInBrowser();
+                openUrlInBrowser(url);
                 break;
             case R.id.menu_item_share: {
-                shareChannelUri();
+                shareUrl(name, url);
                 break;
             }
             default:
@@ -200,12 +246,12 @@ public class ChannelFragment extends BaseListInfoFragment<ChannelInfo> {
             @Override
             public void accept(Throwable throwable) throws Exception {
                 animateView(headerSubscribeButton, false, 100);
-                showSnackBarError(throwable, UserAction.SUBSCRIPTION, NewPipe.getNameOfService(currentInfo.service_id), "Get subscription status", 0);
+                showSnackBarError(throwable, UserAction.SUBSCRIPTION, NewPipe.getNameOfService(currentInfo.getServiceId()), "Get subscription status", 0);
             }
         };
 
         final Observable<List<SubscriptionEntity>> observable = subscriptionService.subscriptionTable()
-                .getSubscription(info.service_id, info.url)
+                .getSubscription(info.getServiceId(), info.getUrl())
                 .toObservable();
 
         disposables.add(observable
@@ -251,14 +297,14 @@ public class ChannelFragment extends BaseListInfoFragment<ChannelInfo> {
         final Action onComplete = new Action() {
             @Override
             public void run() throws Exception {
-                if (DEBUG) Log.d(TAG, "Updated subscription: " + info.url);
+                if (DEBUG) Log.d(TAG, "Updated subscription: " + info.getUrl());
             }
         };
 
         final Consumer<Throwable> onError = new Consumer<Throwable>() {
             @Override
             public void accept(@NonNull Throwable throwable) throws Exception {
-                onUnrecoverableError(throwable, UserAction.SUBSCRIPTION, NewPipe.getNameOfService(info.service_id), "Updating Subscription for " + info.url, R.string.subscription_update_failed);
+                onUnrecoverableError(throwable, UserAction.SUBSCRIPTION, NewPipe.getNameOfService(info.getServiceId()), "Updating Subscription for " + info.getUrl(), R.string.subscription_update_failed);
             }
         };
 
@@ -279,7 +325,7 @@ public class ChannelFragment extends BaseListInfoFragment<ChannelInfo> {
         final Consumer<Throwable> onError = new Consumer<Throwable>() {
             @Override
             public void accept(@NonNull Throwable throwable) throws Exception {
-                onUnrecoverableError(throwable, UserAction.SUBSCRIPTION, NewPipe.getNameOfService(currentInfo.service_id), "Subscription Change", R.string.subscription_change_failed);
+                onUnrecoverableError(throwable, UserAction.SUBSCRIPTION, NewPipe.getNameOfService(currentInfo.getServiceId()), "Subscription Change", R.string.subscription_change_failed);
             }
         };
 
@@ -303,9 +349,9 @@ public class ChannelFragment extends BaseListInfoFragment<ChannelInfo> {
                 if (subscriptionEntities.isEmpty()) {
                     if (DEBUG) Log.d(TAG, "No subscription to this channel!");
                     SubscriptionEntity channel = new SubscriptionEntity();
-                    channel.setServiceId(info.service_id);
-                    channel.setUrl(info.url);
-                    channel.setData(info.name, info.avatar_url, info.description, info.subscriber_count);
+                    channel.setServiceId(info.getServiceId());
+                    channel.setUrl(info.getUrl());
+                    channel.setData(info.getName(), info.getAvatarUrl(), info.getDescription(), info.getSubscriberCount());
                     subscribeButtonMonitor = monitorSubscribeButton(headerSubscribeButton, mapOnSubscribe(channel));
                 } else {
                     if (DEBUG) Log.d(TAG, "Found subscription to this channel!");
@@ -376,29 +422,63 @@ public class ChannelFragment extends BaseListInfoFragment<ChannelInfo> {
         imageLoader.displayImage(result.banner_url, headerChannelBanner, DISPLAY_BANNER_OPTIONS);
         imageLoader.displayImage(result.avatar_url, headerAvatarView, DISPLAY_AVATAR_OPTIONS);
 
-        if (result.subscriber_count != -1) {
-            headerSubscribersTextView.setText(Localization.localizeSubscribersCount(activity, result.subscriber_count));
+        if (result.getSubscriberCount() != -1) {
+            headerSubscribersTextView.setText(Localization.localizeSubscribersCount(activity, result.getSubscriberCount()));
             headerSubscribersTextView.setVisibility(View.VISIBLE);
         } else headerSubscribersTextView.setVisibility(View.GONE);
 
-        if (menuRssButton != null) menuRssButton.setVisible(!TextUtils.isEmpty(result.feed_url));
+        if (menuRssButton != null) menuRssButton.setVisible(!TextUtils.isEmpty(result.getFeedUrl()));
+        playlistCtrl.setVisibility(View.VISIBLE);
 
         if (!result.errors.isEmpty()) {
-            showSnackBarError(result.errors, UserAction.REQUESTED_CHANNEL, NewPipe.getNameOfService(result.service_id), result.url, 0);
+            showSnackBarError(result.errors, UserAction.REQUESTED_CHANNEL, NewPipe.getNameOfService(result.getServiceId()), result.getUrl(), 0);
         }
 
         if (disposables != null) disposables.clear();
         if (subscribeButtonMonitor != null) subscribeButtonMonitor.dispose();
         updateSubscription(result);
         monitorSubscription(result);
+
+        headerPlayAllButton.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                NavigationHelper.playOnMainPlayer(activity, getPlayQueue());
+            }
+        });
+        headerPopupButton.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                NavigationHelper.playOnPopupPlayer(activity, getPlayQueue());
+            }
+        });
+        headerBackgroundButton.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                NavigationHelper.playOnBackgroundPlayer(activity, getPlayQueue());
+            }
+        });
+    }
+
+    private PlayQueue getPlayQueue() {
+        return getPlayQueue(0);
+    }
+
+    private PlayQueue getPlayQueue(final int index) {
+        return new ChannelPlayQueue(
+                currentInfo.getServiceId(),
+                currentInfo.getUrl(),
+                currentInfo.getNextStreamsUrl(),
+                infoListAdapter.getItemsList(),
+                index
+        );
     }
 
     @Override
     public void handleNextItems(ListExtractor.NextItemsResult result) {
         super.handleNextItems(result);
 
-        if (!result.errors.isEmpty()) {
-            showSnackBarError(result.errors, UserAction.REQUESTED_CHANNEL, NewPipe.getNameOfService(serviceId),
+        if (!result.getErrors().isEmpty()) {
+            showSnackBarError(result.getErrors(), UserAction.REQUESTED_CHANNEL, NewPipe.getNameOfService(serviceId),
                     "Get next page of: " + url, R.string.general_error);
         }
     }

app/src/main/java/org/schabi/newpipe/fragments/list/feed/FeedFragment.java

@@ -297,12 +297,12 @@ public class FeedFragment extends BaseListFragment<List<SubscriptionEntity>, Voi
             // Called only when response is non-empty
             @Override
             public void onSuccess(final ChannelInfo channelInfo) {
-                if (infoListAdapter == null || channelInfo.related_streams.isEmpty()) {
+                if (infoListAdapter == null || channelInfo.getRelatedStreams().isEmpty()) {
                     onDone();
                     return;
                 }
 
-                final InfoItem item = channelInfo.related_streams.get(0);
+                final InfoItem item = channelInfo.getRelatedStreams().get(0);
                 // Keep requesting new items if the current one already exists
                 boolean itemExists = doesItemExist(infoListAdapter.getItemsList(), item);
                 if (!itemExists) {
@@ -412,9 +412,9 @@ public class FeedFragment extends BaseListFragment<List<SubscriptionEntity>, Voi
     private boolean doesItemExist(final List<InfoItem> items, final InfoItem item) {
         for (final InfoItem existingItem : items) {
             if (existingItem.info_type == item.info_type &&
-                    existingItem.service_id == item.service_id &&
-                    existingItem.name.equals(item.name) &&
-                    existingItem.url.equals(item.url)) return true;
+                    existingItem.getServiceId() == item.getServiceId() &&
+                    existingItem.getName().equals(item.getName()) &&
+                    existingItem.getUrl().equals(item.getUrl())) return true;
         }
         return false;
     }

app/src/main/java/org/schabi/newpipe/fragments/list/kiosk/KioskFragment.java

@@ -5,6 +5,7 @@ import android.preference.PreferenceManager;
 import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
 import android.support.v7.app.ActionBar;
+import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.Menu;
 import android.view.MenuInflater;
@@ -27,6 +28,7 @@ import org.schabi.newpipe.util.ExtractorHelper;
 import org.schabi.newpipe.util.KioskTranslator;
 import org.schabi.newpipe.util.NavigationHelper;
 
+import icepick.State;
 import io.reactivex.Single;
 
 import static org.schabi.newpipe.util.AnimationUtils.animateView;
@@ -53,16 +55,14 @@ import static org.schabi.newpipe.util.AnimationUtils.animateView;
 
 public class KioskFragment extends BaseListInfoFragment<KioskInfo> {
 
-    private String kioskId = "";
-
+    @State
+    protected String kioskId = "";
+    protected String kioskTranslatedName;
 
     /*//////////////////////////////////////////////////////////////////////////
     // Views
     //////////////////////////////////////////////////////////////////////////*/
 
-    private View headerRootLayout;
-    private TextView headerTitleView;
-
     public static KioskFragment getInstance(int serviceId)
             throws ExtractionException {
         return getInstance(serviceId, NewPipe.getService(serviceId)
@@ -87,20 +87,30 @@ public class KioskFragment extends BaseListInfoFragment<KioskInfo> {
     // LifeCycle
     //////////////////////////////////////////////////////////////////////////*/
 
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        kioskTranslatedName = KioskTranslator.getTranslatedKioskName(kioskId, activity);
+        name = kioskTranslatedName;
+    }
+
     @Override
     public void setUserVisibleHint(boolean isVisibleToUser) {
         super.setUserVisibleHint(isVisibleToUser);
-        if(useAsFrontPage && isVisibleToUser) {
+        if(useAsFrontPage && isVisibleToUser && activity != null) {
             try {
-                activity.getSupportActionBar().setTitle(KioskTranslator.getTranslatedKioskName(kioskId, getActivity()));
+                setTitle(kioskTranslatedName);
             } catch (Exception e) {
-                onError(e);
+                onUnrecoverableError(e, UserAction.UI_ERROR,
+                        "none",
+                        "none", R.string.app_ui_crash);
             }
         }
     }
 
     @Override
-    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
+    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
         return inflater.inflate(R.layout.fragment_kiosk, container, false);
     }
 
@@ -125,14 +135,18 @@ public class KioskFragment extends BaseListInfoFragment<KioskInfo> {
     public Single<KioskInfo> loadResult(boolean forceReload) {
         String contentCountry = PreferenceManager
                 .getDefaultSharedPreferences(activity)
-                .getString(getString(R.string.search_language_key),
-                        getString(R.string.default_language_value));
+                .getString(getString(R.string.content_country_key),
+                        getString(R.string.default_country_value));
         return ExtractorHelper.getKioskInfo(serviceId, url, contentCountry, forceReload);
     }
 
     @Override
     public Single<ListExtractor.NextItemsResult> loadMoreItemsLogic() {
-        return ExtractorHelper.getMoreKioskItems(serviceId, url, currentNextItemsUrl);
+        String contentCountry = PreferenceManager
+                .getDefaultSharedPreferences(activity)
+                .getString(getString(R.string.content_country_key),
+                        getString(R.string.default_country_value));
+        return ExtractorHelper.getMoreKioskItems(serviceId, url, currentNextItemsUrl, contentCountry);
     }
 
     /*//////////////////////////////////////////////////////////////////////////
@@ -149,14 +163,13 @@ public class KioskFragment extends BaseListInfoFragment<KioskInfo> {
     public void handleResult(@NonNull final KioskInfo result) {
         super.handleResult(result);
 
-        String title = KioskTranslator.getTranslatedKioskName(result.id, getActivity());
-        ActionBar supportActionBar = activity.getSupportActionBar();
-        supportActionBar.setTitle(title);
+        name = kioskTranslatedName;
+        setTitle(kioskTranslatedName);
 
-        if (!result.errors.isEmpty()) {
-            showSnackBarError(result.errors,
+        if (!result.getErrors().isEmpty()) {
+            showSnackBarError(result.getErrors(),
                     UserAction.REQUESTED_PLAYLIST,
-                    NewPipe.getNameOfService(result.service_id), result.url, 0);
+                    NewPipe.getNameOfService(result.getServiceId()), result.getUrl(), 0);
         }
     }
 
@@ -164,8 +177,8 @@ public class KioskFragment extends BaseListInfoFragment<KioskInfo> {
     public void handleNextItems(ListExtractor.NextItemsResult result) {
         super.handleNextItems(result);
 
-        if (!result.errors.isEmpty()) {
-            showSnackBarError(result.errors,
+        if (!result.getErrors().isEmpty()) {
+            showSnackBarError(result.getErrors(),
                     UserAction.REQUESTED_PLAYLIST, NewPipe.getNameOfService(serviceId)
                     , "Get next page of: " + url, 0);
         }

app/src/main/java/org/schabi/newpipe/fragments/list/playlist/PlaylistFragment.java

@@ -1,38 +1,36 @@
 package org.schabi.newpipe.fragments.list.playlist;
 
-import android.content.Intent;
-import android.os.Build;
+import android.app.Activity;
+import android.content.Context;
+import android.content.DialogInterface;
 import android.os.Bundle;
 import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
 import android.text.TextUtils;
 import android.util.Log;
-import android.view.Gravity;
 import android.view.LayoutInflater;
 import android.view.Menu;
 import android.view.MenuInflater;
+import android.view.MenuItem;
 import android.view.View;
 import android.view.ViewGroup;
-import android.widget.Button;
 import android.widget.ImageView;
 import android.widget.TextView;
-import android.widget.Toast;
 
 import org.schabi.newpipe.R;
 import org.schabi.newpipe.extractor.ListExtractor;
 import org.schabi.newpipe.extractor.NewPipe;
 import org.schabi.newpipe.extractor.exceptions.ExtractionException;
 import org.schabi.newpipe.extractor.playlist.PlaylistInfo;
+import org.schabi.newpipe.extractor.stream.StreamInfoItem;
 import org.schabi.newpipe.fragments.list.BaseListInfoFragment;
-import org.schabi.newpipe.player.BackgroundPlayer;
-import org.schabi.newpipe.player.MainVideoPlayer;
-import org.schabi.newpipe.player.PopupVideoPlayer;
-import org.schabi.newpipe.playlist.ExternalPlayQueue;
+import org.schabi.newpipe.info_list.InfoItemDialog;
 import org.schabi.newpipe.playlist.PlayQueue;
+import org.schabi.newpipe.playlist.PlaylistPlayQueue;
+import org.schabi.newpipe.playlist.SinglePlayQueue;
 import org.schabi.newpipe.report.UserAction;
 import org.schabi.newpipe.util.ExtractorHelper;
 import org.schabi.newpipe.util.NavigationHelper;
-import org.schabi.newpipe.util.PermissionHelper;
 
 import io.reactivex.Single;
 
@@ -50,10 +48,11 @@ public class PlaylistFragment extends BaseListInfoFragment<PlaylistInfo> {
     private TextView headerUploaderName;
     private ImageView headerUploaderAvatar;
     private TextView headerStreamCount;
+    private View playlistCtrl;
 
-    private Button headerPlayAllButton;
-    private Button headerPopupButton;
-    private Button headerBackgroundButton;
+    private View headerPlayAllButton;
+    private View headerPopupButton;
+    private View headerBackgroundButton;
 
     public static PlaylistFragment getInstance(int serviceId, String url, String name) {
         PlaylistFragment instance = new PlaylistFragment();
@@ -81,10 +80,11 @@ public class PlaylistFragment extends BaseListInfoFragment<PlaylistInfo> {
         headerUploaderName = headerRootLayout.findViewById(R.id.uploader_name);
         headerUploaderAvatar = headerRootLayout.findViewById(R.id.uploader_avatar_view);
         headerStreamCount = headerRootLayout.findViewById(R.id.playlist_stream_count);
+        playlistCtrl = headerRootLayout.findViewById(R.id.playlist_control);
 
-        headerPlayAllButton = headerRootLayout.findViewById(R.id.playlist_play_all_button);
-        headerPopupButton = headerRootLayout.findViewById(R.id.playlist_play_popup_button);
-        headerBackgroundButton = headerRootLayout.findViewById(R.id.playlist_play_bg_button);
+        headerPlayAllButton = headerRootLayout.findViewById(R.id.playlist_ctrl_play_all_button);
+        headerPopupButton = headerRootLayout.findViewById(R.id.playlist_ctrl_play_popup_button);
+        headerBackgroundButton = headerRootLayout.findViewById(R.id.playlist_ctrl_play_bg_button);
 
         return headerRootLayout;
     }
@@ -96,6 +96,49 @@ public class PlaylistFragment extends BaseListInfoFragment<PlaylistInfo> {
         infoListAdapter.useMiniItemVariants(true);
     }
 
+    @Override
+    protected void showStreamDialog(final StreamInfoItem item) {
+        final Context context = getContext();
+        final Activity activity = getActivity();
+        if (context == null || context.getResources() == null || getActivity() == null) return;
+
+        final String[] commands = new String[]{
+                context.getResources().getString(R.string.enqueue_on_background),
+                context.getResources().getString(R.string.enqueue_on_popup),
+                context.getResources().getString(R.string.start_here_on_main),
+                context.getResources().getString(R.string.start_here_on_background),
+                context.getResources().getString(R.string.start_here_on_popup),
+        };
+
+        final DialogInterface.OnClickListener actions = new DialogInterface.OnClickListener() {
+            @Override
+            public void onClick(DialogInterface dialogInterface, int i) {
+                final int index = Math.max(infoListAdapter.getItemsList().indexOf(item), 0);
+                switch (i) {
+                    case 0:
+                        NavigationHelper.enqueueOnBackgroundPlayer(context, new SinglePlayQueue(item));
+                        break;
+                    case 1:
+                        NavigationHelper.enqueueOnPopupPlayer(activity, new SinglePlayQueue(item));
+                        break;
+                    case 2:
+                        NavigationHelper.playOnMainPlayer(context, getPlayQueue(index));
+                        break;
+                    case 3:
+                        NavigationHelper.playOnBackgroundPlayer(context, getPlayQueue(index));
+                        break;
+                    case 4:
+                        NavigationHelper.playOnPopupPlayer(activity, getPlayQueue(index));
+                        break;
+                    default:
+                        break;
+                }
+            }
+        };
+
+        new InfoItemDialog(getActivity(), item, commands, actions).show();
+    }
+
     @Override
     public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
         if (DEBUG) Log.d(TAG, "onCreateOptionsMenu() called with: menu = [" + menu + "], inflater = [" + inflater + "]");
@@ -117,6 +160,23 @@ public class PlaylistFragment extends BaseListInfoFragment<PlaylistInfo> {
         return ExtractorHelper.getPlaylistInfo(serviceId, url, forceLoad);
     }
 
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        switch (item.getItemId()) {
+            case R.id.menu_item_openInBrowser:
+                openUrlInBrowser(url);
+                break;
+            case R.id.menu_item_share: {
+                shareUrl(name, url);
+                break;
+            }
+            default:
+                return super.onOptionsItemSelected(item);
+        }
+        return true;
+    }
+
+
     /*//////////////////////////////////////////////////////////////////////////
     // Contract
     //////////////////////////////////////////////////////////////////////////*/
@@ -138,69 +198,67 @@ public class PlaylistFragment extends BaseListInfoFragment<PlaylistInfo> {
         animateView(headerRootLayout, true, 100);
         animateView(headerUploaderLayout, true, 300);
         headerUploaderLayout.setOnClickListener(null);
-        if (!TextUtils.isEmpty(result.uploader_name)) {
-            headerUploaderName.setText(result.uploader_name);
-            if (!TextUtils.isEmpty(result.uploader_url)) {
+        if (!TextUtils.isEmpty(result.getUploaderName())) {
+            headerUploaderName.setText(result.getUploaderName());
+            if (!TextUtils.isEmpty(result.getUploaderUrl())) {
                 headerUploaderLayout.setOnClickListener(new View.OnClickListener() {
                     @Override
                     public void onClick(View v) {
-                        NavigationHelper.openChannelFragment(getFragmentManager(), result.service_id, result.uploader_url, result.uploader_name);
+                        NavigationHelper.openChannelFragment(getFragmentManager(), result.getServiceId(), result.getUploaderUrl(), result.getUploaderName());
                     }
                 });
             }
         }
 
-        imageLoader.displayImage(result.uploader_avatar_url, headerUploaderAvatar, DISPLAY_AVATAR_OPTIONS);
+        playlistCtrl.setVisibility(View.VISIBLE);
+
+        imageLoader.displayImage(result.getUploaderAvatarUrl(), headerUploaderAvatar, DISPLAY_AVATAR_OPTIONS);
         headerStreamCount.setText(getResources().getQuantityString(R.plurals.videos, (int) result.stream_count, (int) result.stream_count));
 
-        if (!result.errors.isEmpty()) {
-            showSnackBarError(result.errors, UserAction.REQUESTED_PLAYLIST, NewPipe.getNameOfService(result.service_id), result.url, 0);
+        if (!result.getErrors().isEmpty()) {
+            showSnackBarError(result.getErrors(), UserAction.REQUESTED_PLAYLIST, NewPipe.getNameOfService(result.getServiceId()), result.getUrl(), 0);
         }
 
         headerPlayAllButton.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View view) {
-                startActivity(buildPlaylistIntent(MainVideoPlayer.class));
+                NavigationHelper.playOnMainPlayer(activity, getPlayQueue());
             }
         });
         headerPopupButton.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View view) {
-                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M && !PermissionHelper.checkSystemAlertWindowPermission(activity)) {
-                    Toast toast = Toast.makeText(activity, R.string.msg_popup_permission, Toast.LENGTH_LONG);
-                    TextView messageView = toast.getView().findViewById(android.R.id.message);
-                    if (messageView != null) messageView.setGravity(Gravity.CENTER);
-                    toast.show();
-                    return;
-                }
-                activity.startService(buildPlaylistIntent(PopupVideoPlayer.class));
+                NavigationHelper.playOnPopupPlayer(activity, getPlayQueue());
             }
         });
         headerBackgroundButton.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View view) {
-                activity.startService(buildPlaylistIntent(BackgroundPlayer.class));
+                NavigationHelper.playOnBackgroundPlayer(activity, getPlayQueue());
             }
         });
     }
 
-    private Intent buildPlaylistIntent(final Class targetClazz) {
-        final PlayQueue playQueue = new ExternalPlayQueue(
-                currentInfo.service_id,
-                currentInfo.url,
-                currentInfo.next_streams_url,
+    private PlayQueue getPlayQueue() {
+        return getPlayQueue(0);
+    }
+
+    private PlayQueue getPlayQueue(final int index) {
+        return new PlaylistPlayQueue(
+                currentInfo.getServiceId(),
+                currentInfo.getUrl(),
+                currentInfo.getNextStreamsUrl(),
                 infoListAdapter.getItemsList(),
-                0
+                index
         );
-        return NavigationHelper.getPlayerIntent(activity, targetClazz, playQueue);
     }
 
     @Override
     public void handleNextItems(ListExtractor.NextItemsResult result) {
         super.handleNextItems(result);
 
-        if (!result.errors.isEmpty()) {
-            showSnackBarError(result.errors, UserAction.REQUESTED_PLAYLIST, NewPipe.getNameOfService(serviceId)
+        if (!result.getErrors().isEmpty()) {
+            showSnackBarError(result.getErrors(), UserAction.REQUESTED_PLAYLIST, NewPipe.getNameOfService(serviceId)
                     , "Get next page of: " + url, 0);
         }
     }

app/src/main/java/org/schabi/newpipe/fragments/list/search/SearchFragment.java

@@ -111,7 +111,7 @@ public class SearchFragment extends BaseListFragment<SearchResult, ListExtractor
 
     private int currentPage = 0;
     private int currentNextPage = 0;
-    private String searchLanguage;
+    private String contentCountry;
     private boolean isSuggestionsEnabled = true;
     private boolean isSearchHistoryEnabled = true;
 
@@ -165,7 +165,7 @@ public class SearchFragment extends BaseListFragment<SearchResult, ListExtractor
         suggestionListAdapter = new SuggestionListAdapter(activity);
         SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(activity);
         isSearchHistoryEnabled = preferences.getBoolean(getString(R.string.enable_search_history_key), true);
-        suggestionListAdapter.setShowSugestinHistory(isSearchHistoryEnabled);
+        suggestionListAdapter.setShowSuggestionHistory(isSearchHistoryEnabled);
         
         searchHistoryDAO = NewPipeDatabase.getInstance().searchHistoryDAO();
     }
@@ -176,7 +176,7 @@ public class SearchFragment extends BaseListFragment<SearchResult, ListExtractor
 
         SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(activity);
         isSuggestionsEnabled = preferences.getBoolean(getString(R.string.show_search_suggestions_key), true);
-        searchLanguage = preferences.getString(getString(R.string.search_language_key), getString(R.string.default_language_value));
+        contentCountry = preferences.getString(getString(R.string.content_country_key), getString(R.string.default_country_value));
     }
 
     @Override
@@ -446,6 +446,12 @@ public class SearchFragment extends BaseListFragment<SearchResult, ListExtractor
                 searchEditText.setText(item.query);
             }
 
+            @Override
+            public void onSuggestionItemInserted(SuggestionItem item) {
+                searchEditText.setText(item.query);
+                searchEditText.setSelection(searchEditText.getText().length());
+            }
+
             @Override
             public void onSuggestionItemLongClick(SuggestionItem item) {
                 if (item.fromHistory) showDeleteSuggestionDialog(item);
@@ -613,7 +619,7 @@ public class SearchFragment extends BaseListFragment<SearchResult, ListExtractor
                             return local.materialize();
                         }
 
-                        final Observable<List<SuggestionItem>> network = ExtractorHelper.suggestionsFor(serviceId, query, searchLanguage).toObservable()
+                        final Observable<List<SuggestionItem>> network = ExtractorHelper.suggestionsFor(serviceId, query, contentCountry).toObservable()
                                 .map(new Function<List<String>, List<SuggestionItem>>() {
                                     @Override
                                     public List<SuggestionItem> apply(@io.reactivex.annotations.NonNull List<String> strings) throws Exception {
@@ -725,7 +731,7 @@ public class SearchFragment extends BaseListFragment<SearchResult, ListExtractor
         super.startLoading(forceLoad);
         if (disposables != null) disposables.clear();
         if (searchDisposable != null) searchDisposable.dispose();
-        searchDisposable = ExtractorHelper.searchFor(serviceId, searchQuery, currentPage, searchLanguage, filter)
+        searchDisposable = ExtractorHelper.searchFor(serviceId, searchQuery, currentPage, contentCountry, filter)
                 .subscribeOn(Schedulers.io())
                 .observeOn(AndroidSchedulers.mainThread())
                 .subscribe(new Consumer<SearchResult>() {
@@ -749,7 +755,7 @@ public class SearchFragment extends BaseListFragment<SearchResult, ListExtractor
         showListFooter(true);
         if (searchDisposable != null) searchDisposable.dispose();
         currentNextPage = currentPage + 1;
-        searchDisposable = ExtractorHelper.getMoreSearchItems(serviceId, searchQuery, currentNextPage, searchLanguage, filter)
+        searchDisposable = ExtractorHelper.getMoreSearchItems(serviceId, searchQuery, currentNextPage, contentCountry, filter)
                 .subscribeOn(Schedulers.io())
                 .observeOn(AndroidSchedulers.mainThread())
                 .subscribe(new Consumer<ListExtractor.NextItemsResult>() {
@@ -855,8 +861,8 @@ public class SearchFragment extends BaseListFragment<SearchResult, ListExtractor
         lastSearchedQuery = searchQuery;
 
         if (infoListAdapter.getItemsList().size() == 0) {
-            if (result.resultList.size() > 0) {
-                infoListAdapter.addInfoItemList(result.resultList);
+            if (!result.getResults().isEmpty()) {
+                infoListAdapter.addInfoItemList(result.getResults());
             } else {
                 infoListAdapter.clearStreamItemList();
                 showEmptyState();
@@ -870,11 +876,11 @@ public class SearchFragment extends BaseListFragment<SearchResult, ListExtractor
     @Override
     public void handleNextItems(ListExtractor.NextItemsResult result) {
         showListFooter(false);
-        currentPage = Integer.parseInt(result.nextItemsUrl);
-        infoListAdapter.addInfoItemList(result.nextItemsList);
+        currentPage = Integer.parseInt(result.getNextItemsUrl());
+        infoListAdapter.addInfoItemList(result.getNextItemsList());
 
-        if (!result.errors.isEmpty()) {
-            showSnackBarError(result.errors, UserAction.SEARCHED, NewPipe.getNameOfService(serviceId)
+        if (!result.getErrors().isEmpty()) {
+            showSnackBarError(result.getErrors(), UserAction.SEARCHED, NewPipe.getNameOfService(serviceId)
                     , "\"" + searchQuery + "\" → page " + currentPage, 0);
         }
         super.handleNextItems(result);

app/src/main/java/org/schabi/newpipe/fragments/list/search/SuggestionListAdapter.java

@@ -19,10 +19,11 @@ public class SuggestionListAdapter extends RecyclerView.Adapter<SuggestionListAd
     private final ArrayList<SuggestionItem> items = new ArrayList<>();
     private final Context context;
     private OnSuggestionItemSelected listener;
-    private boolean showSugestinHistory = true;
+    private boolean showSuggestionHistory = true;
 
     public interface OnSuggestionItemSelected {
         void onSuggestionItemSelected(SuggestionItem item);
+        void onSuggestionItemInserted(SuggestionItem item);
         void onSuggestionItemLongClick(SuggestionItem item);
     }
 
@@ -32,7 +33,7 @@ public class SuggestionListAdapter extends RecyclerView.Adapter<SuggestionListAd
 
     public void setItems(List<SuggestionItem> items) {
         this.items.clear();
-        if (showSugestinHistory) {
+        if (showSuggestionHistory) {
             this.items.addAll(items);
         } else {
             // remove history items if history is disabled
@@ -49,8 +50,8 @@ public class SuggestionListAdapter extends RecyclerView.Adapter<SuggestionListAd
         this.listener = listener;
     }
 
-    public void setShowSugestinHistory(boolean v) {
-        showSugestinHistory = v;
+    public void setShowSuggestionHistory(boolean v) {
+        showSuggestionHistory = v;
     }
 
     @Override
@@ -62,19 +63,25 @@ public class SuggestionListAdapter extends RecyclerView.Adapter<SuggestionListAd
     public void onBindViewHolder(SuggestionItemHolder holder, int position) {
         final SuggestionItem currentItem = getItem(position);
         holder.updateFrom(currentItem);
-        holder.itemView.setOnClickListener(new View.OnClickListener() {
+        holder.queryView.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
                 if (listener != null) listener.onSuggestionItemSelected(currentItem);
             }
         });
-        holder.itemView.setOnLongClickListener(new View.OnLongClickListener() {
+        holder.queryView.setOnLongClickListener(new View.OnLongClickListener() {
             @Override
             public boolean onLongClick(View v) {
                 if (listener != null) listener.onSuggestionItemLongClick(currentItem);
                 return true;
             }
         });
+        holder.insertView.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                if (listener != null) listener.onSuggestionItemInserted(currentItem);
+            }
+        });
     }
 
     private SuggestionItem getItem(int position) {
@@ -93,6 +100,8 @@ public class SuggestionListAdapter extends RecyclerView.Adapter<SuggestionListAd
     public static class SuggestionItemHolder extends RecyclerView.ViewHolder {
         private final TextView itemSuggestionQuery;
         private final ImageView suggestionIcon;
+        private final View queryView;
+        private final View insertView;
 
         // Cache some ids, as they can potentially be constantly updated/recycled
         private final int historyResId;
@@ -103,6 +112,9 @@ public class SuggestionListAdapter extends RecyclerView.Adapter<SuggestionListAd
             suggestionIcon = rootView.findViewById(R.id.item_suggestion_icon);
             itemSuggestionQuery = rootView.findViewById(R.id.item_suggestion_query);
 
+            queryView = rootView.findViewById(R.id.suggestion_search);
+            insertView = rootView.findViewById(R.id.suggestion_insert);
+
             historyResId = resolveResourceIdFromAttr(rootView.getContext(), R.attr.history);
             searchResId = resolveResourceIdFromAttr(rootView.getContext(), R.attr.search);
         }

app/src/main/java/org/schabi/newpipe/fragments/subscription/SubscriptionFragment.java

@@ -19,8 +19,6 @@ import org.schabi.newpipe.fragments.BaseStateFragment;
 import org.schabi.newpipe.info_list.InfoItemBuilder;
 import org.schabi.newpipe.info_list.InfoListAdapter;
 import org.schabi.newpipe.report.UserAction;
-import org.schabi.newpipe.util.KioskTranslator;
-import org.schabi.newpipe.report.ErrorActivity;
 import org.schabi.newpipe.util.NavigationHelper;
 
 import java.util.ArrayList;
@@ -131,9 +129,12 @@ public class SubscriptionFragment extends BaseStateFragment<List<SubscriptionEnt
             @Override
             public void selected(ChannelInfoItem selectedItem) {
                 // Requires the parent fragment to find holder for fragment replacement
-                NavigationHelper.openChannelFragment(getParentFragment().getFragmentManager(), selectedItem.service_id, selectedItem.url, selectedItem.name);
+                NavigationHelper.openChannelFragment(getParentFragment().getFragmentManager(), selectedItem.getServiceId(), selectedItem.url, selectedItem.getName());
 
             }
+
+            @Override
+            public void held(ChannelInfoItem selectedItem) {}
         });
 
         headerRootLayout.setOnClickListener(new View.OnClickListener() {

app/src/main/java/org/schabi/newpipe/fragments/subscription/SubscriptionService.java

@@ -112,7 +112,7 @@ public class SubscriptionService {
                     // Subscriber count changes very often, making this check almost unnecessary.
                     // Consider removing it later.
                     if (!isSubscriptionUpToDate(info, subscription)) {
-                        subscription.setData(info.name, info.avatar_url, info.description, info.subscriber_count);
+                        subscription.setData(info.getName(), info.getAvatarUrl(), info.getDescription(), info.getSubscriberCount());
 
                         return update(subscription);
                     }
@@ -122,7 +122,7 @@ public class SubscriptionService {
             }
         };
 
-        return subscriptionTable().getSubscription(info.service_id, info.url)
+        return subscriptionTable().getSubscription(info.getServiceId(), info.getUrl())
                 .firstOrError()
                 .flatMapCompletable(update);
     }
@@ -137,11 +137,11 @@ public class SubscriptionService {
     }
 
     private boolean isSubscriptionUpToDate(final ChannelInfo info, final SubscriptionEntity entity) {
-        return info.url.equals(entity.getUrl()) &&
-                info.service_id == entity.getServiceId() &&
-                info.name.equals(entity.getName()) &&
-                info.avatar_url.equals(entity.getAvatarUrl()) &&
-                info.description.equals(entity.getDescription()) &&
-                info.subscriber_count == entity.getSubscriberCount();
+        return info.getUrl().equals(entity.getUrl()) &&
+                info.getServiceId() == entity.getServiceId() &&
+                info.getName().equals(entity.getName()) &&
+                info.getAvatarUrl().equals(entity.getAvatarUrl()) &&
+                info.getDescription().equals(entity.getDescription()) &&
+                info.getSubscriberCount() == entity.getSubscriberCount();
     }
 }

app/src/main/java/org/schabi/newpipe/info_list/InfoItemBuilder.java

@@ -44,6 +44,7 @@ public class InfoItemBuilder {
 
     public interface OnInfoItemSelectedListener<T extends InfoItem> {
         void selected(T selectedItem);
+        void held(T selectedItem);
     }
 
     private final Context context;

app/src/main/java/org/schabi/newpipe/info_list/InfoItemDialog.java

@@ -0,0 +1,55 @@
+package org.schabi.newpipe.info_list;
+
+import android.app.Activity;
+import android.app.AlertDialog;
+import android.content.DialogInterface;
+import android.support.annotation.NonNull;
+import android.support.annotation.Nullable;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.widget.TextView;
+
+import org.schabi.newpipe.R;
+import org.schabi.newpipe.extractor.stream.StreamInfoItem;
+
+public class InfoItemDialog {
+    private final AlertDialog dialog;
+
+    public InfoItemDialog(@NonNull final Activity activity,
+                          @NonNull final StreamInfoItem info,
+                          @NonNull final String[] commands,
+                          @NonNull final DialogInterface.OnClickListener actions) {
+        this(activity, commands, actions, info.getName(), info.uploader_name);
+    }
+
+    public InfoItemDialog(@NonNull final Activity activity,
+                          @NonNull final String[] commands,
+                          @NonNull final DialogInterface.OnClickListener actions,
+                          @NonNull final String title,
+                          @Nullable final String additionalDetail) {
+
+        final LayoutInflater inflater = activity.getLayoutInflater();
+        final View bannerView = inflater.inflate(R.layout.dialog_title, null);
+        bannerView.setSelected(true);
+
+        TextView titleView = bannerView.findViewById(R.id.itemTitleView);
+        titleView.setText(title);
+
+        TextView detailsView = bannerView.findViewById(R.id.itemAdditionalDetails);
+        if (additionalDetail != null) {
+            detailsView.setText(additionalDetail);
+            detailsView.setVisibility(View.VISIBLE);
+        } else {
+            detailsView.setVisibility(View.GONE);
+        }
+
+        dialog = new AlertDialog.Builder(activity)
+                .setCustomTitle(bannerView)
+                .setItems(commands, actions)
+                .create();
+    }
+
+    public void show() {
+        dialog.show();
+    }
+}

app/src/main/java/org/schabi/newpipe/info_list/holder/ChannelMiniInfoItemHolder.java

@@ -36,7 +36,7 @@ public class ChannelMiniInfoItemHolder extends InfoItemHolder {
         if (!(infoItem instanceof ChannelInfoItem)) return;
         final ChannelInfoItem item = (ChannelInfoItem) infoItem;
 
-        itemTitleView.setText(item.name);
+        itemTitleView.setText(item.getName());
         itemAdditionalDetailView.setText(getDetailLine(item));
 
         itemBuilder.getImageLoader()

app/src/main/java/org/schabi/newpipe/info_list/holder/PlaylistInfoItemHolder.java

@@ -32,7 +32,7 @@ public class PlaylistInfoItemHolder extends InfoItemHolder {
         if (!(infoItem instanceof PlaylistInfoItem)) return;
         final PlaylistInfoItem item = (PlaylistInfoItem) infoItem;
 
-        itemTitleView.setText(item.name);
+        itemTitleView.setText(item.getName());
         itemStreamCountView.setText(item.stream_count + "");
         itemUploaderView.setText(item.uploader_name);
 

app/src/main/java/org/schabi/newpipe/info_list/holder/StreamMiniInfoItemHolder.java

@@ -40,7 +40,7 @@ public class StreamMiniInfoItemHolder extends InfoItemHolder {
         if (!(infoItem instanceof StreamInfoItem)) return;
         final StreamInfoItem item = (StreamInfoItem) infoItem;
 
-        itemVideoTitleView.setText(item.name);
+        itemVideoTitleView.setText(item.getName());
         itemUploaderView.setText(item.uploader_name);
 
         if (item.duration > 0) {
@@ -67,6 +67,38 @@ public class StreamMiniInfoItemHolder extends InfoItemHolder {
                 }
             }
         });
+
+        switch (item.stream_type) {
+            case AUDIO_STREAM:
+            case VIDEO_STREAM:
+            case FILE:
+                enableLongClick(item);
+                break;
+            case LIVE_STREAM:
+            case AUDIO_LIVE_STREAM:
+            case NONE:
+            default:
+                disableLongClick();
+                break;
+        }
+    }
+
+    private void enableLongClick(final StreamInfoItem item) {
+        itemView.setLongClickable(true);
+        itemView.setOnLongClickListener(new View.OnLongClickListener() {
+            @Override
+            public boolean onLongClick(View view) {
+                if (itemBuilder.getOnStreamSelectedListener() != null) {
+                    itemBuilder.getOnStreamSelectedListener().held(item);
+                }
+                return true;
+            }
+        });
+    }
+
+    private void disableLongClick() {
+        itemView.setLongClickable(false);
+        itemView.setOnLongClickListener(null);
     }
 
     /**

app/src/main/java/org/schabi/newpipe/player/BackgroundPlayer.java

@@ -48,6 +48,7 @@ import org.schabi.newpipe.player.event.PlayerEventListener;
 import org.schabi.newpipe.player.helper.LockManager;
 import org.schabi.newpipe.playlist.PlayQueueItem;
 import org.schabi.newpipe.util.ListHelper;
+import org.schabi.newpipe.util.NavigationHelper;
 import org.schabi.newpipe.util.ThemeHelper;
 
 import static org.schabi.newpipe.player.helper.PlayerHelper.getTimeString;
@@ -64,10 +65,13 @@ public final class BackgroundPlayer extends Service {
 
     public static final String ACTION_CLOSE = "org.schabi.newpipe.player.BackgroundPlayer.CLOSE";
     public static final String ACTION_PLAY_PAUSE = "org.schabi.newpipe.player.BackgroundPlayer.PLAY_PAUSE";
-    public static final String ACTION_OPEN_CONTROLS = "org.schabi.newpipe.player.BackgroundPlayer.OPEN_CONTROLS";
     public static final String ACTION_REPEAT = "org.schabi.newpipe.player.BackgroundPlayer.REPEAT";
     public static final String ACTION_PLAY_NEXT = "org.schabi.newpipe.player.BackgroundPlayer.ACTION_PLAY_NEXT";
     public static final String ACTION_PLAY_PREVIOUS = "org.schabi.newpipe.player.BackgroundPlayer.ACTION_PLAY_PREVIOUS";
+    public static final String ACTION_FAST_REWIND = "org.schabi.newpipe.player.BackgroundPlayer.ACTION_FAST_REWIND";
+    public static final String ACTION_FAST_FORWARD = "org.schabi.newpipe.player.BackgroundPlayer.ACTION_FAST_FORWARD";
+
+    public static final String SET_IMAGE_RESOURCE_METHOD = "setImageResource";
 
     private BasePlayerImpl basePlayerImpl;
     private LockManager lockManager;
@@ -130,16 +134,6 @@ public final class BackgroundPlayer extends Service {
     /*//////////////////////////////////////////////////////////////////////////
     // Actions
     //////////////////////////////////////////////////////////////////////////*/
-
-    public void openControl(final Context context) {
-        Intent intent = new Intent(context, BackgroundPlayerActivity.class);
-        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.N) {
-            intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
-        }
-        context.startActivity(intent);
-        context.sendBroadcast(new Intent(Intent.ACTION_CLOSE_SYSTEM_DIALOGS));
-    }
-
     private void onClose() {
         if (DEBUG) Log.d(TAG, "onClose() called");
 
@@ -182,7 +176,7 @@ public final class BackgroundPlayer extends Service {
 
         NotificationCompat.Builder builder = new NotificationCompat.Builder(this, getString(R.string.notification_channel_id))
                 .setOngoing(true)
-                .setSmallIcon(R.drawable.ic_play_circle_filled_white_24dp)
+                .setSmallIcon(R.drawable.ic_newpipe_triangle_white)
                 .setVisibility(NotificationCompat.VISIBILITY_PUBLIC)
                 .setCustomContentView(notRemoteView)
                 .setCustomBigContentView(bigNotRemoteView);
@@ -191,6 +185,8 @@ public final class BackgroundPlayer extends Service {
     }
 
     private void setupNotification(RemoteViews remoteViews) {
+        if (basePlayerImpl == null) return;
+
         remoteViews.setTextViewText(R.id.notificationSongName, basePlayerImpl.getVideoTitle());
         remoteViews.setTextViewText(R.id.notificationArtist, basePlayerImpl.getUploaderName());
 
@@ -198,15 +194,29 @@ public final class BackgroundPlayer extends Service {
                 PendingIntent.getBroadcast(this, NOTIFICATION_ID, new Intent(ACTION_PLAY_PAUSE), PendingIntent.FLAG_UPDATE_CURRENT));
         remoteViews.setOnClickPendingIntent(R.id.notificationStop,
                 PendingIntent.getBroadcast(this, NOTIFICATION_ID, new Intent(ACTION_CLOSE), PendingIntent.FLAG_UPDATE_CURRENT));
-        remoteViews.setOnClickPendingIntent(R.id.notificationContent,
-                PendingIntent.getBroadcast(this, NOTIFICATION_ID, new Intent(ACTION_OPEN_CONTROLS), PendingIntent.FLAG_UPDATE_CURRENT));
         remoteViews.setOnClickPendingIntent(R.id.notificationRepeat,
                 PendingIntent.getBroadcast(this, NOTIFICATION_ID, new Intent(ACTION_REPEAT), PendingIntent.FLAG_UPDATE_CURRENT));
 
-        remoteViews.setOnClickPendingIntent(R.id.notificationFRewind,
-                PendingIntent.getBroadcast(this, NOTIFICATION_ID, new Intent(ACTION_PLAY_PREVIOUS), PendingIntent.FLAG_UPDATE_CURRENT));
-        remoteViews.setOnClickPendingIntent(R.id.notificationFForward,
-                PendingIntent.getBroadcast(this, NOTIFICATION_ID, new Intent(ACTION_PLAY_NEXT), PendingIntent.FLAG_UPDATE_CURRENT));
+        // Starts background player activity -- attempts to unlock lockscreen
+        final Intent intent = NavigationHelper.getBackgroundPlayerActivityIntent(this);
+        remoteViews.setOnClickPendingIntent(R.id.notificationContent,
+                PendingIntent.getActivity(this, NOTIFICATION_ID, intent, PendingIntent.FLAG_UPDATE_CURRENT));
+
+        if (basePlayerImpl.playQueue != null && basePlayerImpl.playQueue.size() > 1) {
+            remoteViews.setInt(R.id.notificationFRewind, SET_IMAGE_RESOURCE_METHOD, R.drawable.exo_controls_previous);
+            remoteViews.setInt(R.id.notificationFForward, SET_IMAGE_RESOURCE_METHOD, R.drawable.exo_controls_next);
+            remoteViews.setOnClickPendingIntent(R.id.notificationFRewind,
+                    PendingIntent.getBroadcast(this, NOTIFICATION_ID, new Intent(ACTION_PLAY_PREVIOUS), PendingIntent.FLAG_UPDATE_CURRENT));
+            remoteViews.setOnClickPendingIntent(R.id.notificationFForward,
+                    PendingIntent.getBroadcast(this, NOTIFICATION_ID, new Intent(ACTION_PLAY_NEXT), PendingIntent.FLAG_UPDATE_CURRENT));
+        } else {
+            remoteViews.setInt(R.id.notificationFRewind, SET_IMAGE_RESOURCE_METHOD, R.drawable.exo_controls_rewind);
+            remoteViews.setInt(R.id.notificationFForward, SET_IMAGE_RESOURCE_METHOD, R.drawable.exo_controls_fastforward);
+            remoteViews.setOnClickPendingIntent(R.id.notificationFRewind,
+                    PendingIntent.getBroadcast(this, NOTIFICATION_ID, new Intent(ACTION_FAST_REWIND), PendingIntent.FLAG_UPDATE_CURRENT));
+            remoteViews.setOnClickPendingIntent(R.id.notificationFForward,
+                    PendingIntent.getBroadcast(this, NOTIFICATION_ID, new Intent(ACTION_FAST_FORWARD), PendingIntent.FLAG_UPDATE_CURRENT));
+        }
 
         setRepeatModeIcon(remoteViews, basePlayerImpl.getRepeatMode());
     }
@@ -241,17 +251,15 @@ public final class BackgroundPlayer extends Service {
     //////////////////////////////////////////////////////////////////////////*/
 
     private void setRepeatModeIcon(final RemoteViews remoteViews, final int repeatMode) {
-        final String methodName = "setImageResource";
-
         switch (repeatMode) {
             case Player.REPEAT_MODE_OFF:
-                remoteViews.setInt(R.id.notificationRepeat, methodName, R.drawable.exo_controls_repeat_off);
+                remoteViews.setInt(R.id.notificationRepeat, SET_IMAGE_RESOURCE_METHOD, R.drawable.exo_controls_repeat_off);
                 break;
             case Player.REPEAT_MODE_ONE:
-                remoteViews.setInt(R.id.notificationRepeat, methodName, R.drawable.exo_controls_repeat_one);
+                remoteViews.setInt(R.id.notificationRepeat, SET_IMAGE_RESOURCE_METHOD, R.drawable.exo_controls_repeat_one);
                 break;
             case Player.REPEAT_MODE_ALL:
-                remoteViews.setInt(R.id.notificationRepeat, methodName, R.drawable.exo_controls_repeat_all);
+                remoteViews.setInt(R.id.notificationRepeat, SET_IMAGE_RESOURCE_METHOD, R.drawable.exo_controls_repeat_all);
                 break;
         }
     }
@@ -372,6 +380,7 @@ public final class BackgroundPlayer extends Service {
 
         @Override
         public void sync(@NonNull final PlayQueueItem item, @Nullable final StreamInfo info) {
+            if (currentItem == item && currentInfo == info) return;
             super.sync(item, info);
 
             resetNotification();
@@ -380,12 +389,13 @@ public final class BackgroundPlayer extends Service {
         }
 
         @Override
+        @Nullable
         public MediaSource sourceOf(final PlayQueueItem item, final StreamInfo info) {
             final int index = ListHelper.getDefaultAudioFormat(context, info.audio_streams);
-            if (index < 0) return null;
+            if (index < 0 || index >= info.audio_streams.size()) return null;
 
             final AudioStream audio = info.audio_streams.get(index);
-            return buildMediaSource(audio.url, MediaFormat.getSuffixById(audio.format));
+            return buildMediaSource(audio.getUrl(), MediaFormat.getSuffixById(audio.getFormatId()));
         }
 
         @Override
@@ -445,10 +455,11 @@ public final class BackgroundPlayer extends Service {
             super.setupBroadcastReceiver(intentFilter);
             intentFilter.addAction(ACTION_CLOSE);
             intentFilter.addAction(ACTION_PLAY_PAUSE);
-            intentFilter.addAction(ACTION_OPEN_CONTROLS);
             intentFilter.addAction(ACTION_REPEAT);
             intentFilter.addAction(ACTION_PLAY_PREVIOUS);
             intentFilter.addAction(ACTION_PLAY_NEXT);
+            intentFilter.addAction(ACTION_FAST_REWIND);
+            intentFilter.addAction(ACTION_FAST_FORWARD);
 
             intentFilter.addAction(Intent.ACTION_SCREEN_ON);
             intentFilter.addAction(Intent.ACTION_SCREEN_OFF);
@@ -468,9 +479,6 @@ public final class BackgroundPlayer extends Service {
                 case ACTION_PLAY_PAUSE:
                     onVideoPlayPause();
                     break;
-                case ACTION_OPEN_CONTROLS:
-                    openControl(getApplicationContext());
-                    break;
                 case ACTION_REPEAT:
                     onRepeatClicked();
                     break;
@@ -480,6 +488,12 @@ public final class BackgroundPlayer extends Service {
                 case ACTION_PLAY_PREVIOUS:
                     onPlayPrevious();
                     break;
+                case ACTION_FAST_FORWARD:
+                    onFastForward();
+                    break;
+                case ACTION_FAST_REWIND:
+                    onFastRewind();
+                    break;
                 case Intent.ACTION_SCREEN_ON:
                     onScreenOnOff(true);
                     break;

app/src/main/java/org/schabi/newpipe/player/BackgroundPlayerActivity.java

@@ -1,8 +1,12 @@
 package org.schabi.newpipe.player;
 
 import android.content.Intent;
+import android.view.MenuItem;
 
 import org.schabi.newpipe.R;
+import org.schabi.newpipe.util.PermissionHelper;
+
+import static org.schabi.newpipe.player.BackgroundPlayer.ACTION_CLOSE;
 
 public final class BackgroundPlayerActivity extends ServicePlayerActivity {
 
@@ -36,4 +40,31 @@ public final class BackgroundPlayerActivity extends ServicePlayerActivity {
             ((BackgroundPlayer.BasePlayerImpl) player).removeActivityListener(this);
         }
     }
+
+    @Override
+    public int getPlayerOptionMenuResource() {
+        return R.menu.menu_play_queue_bg;
+    }
+
+    @Override
+    public boolean onPlayerOptionSelected(MenuItem item) {
+        if (item.getItemId() == R.id.action_switch_popup) {
+
+            if (!PermissionHelper.isPopupEnabled(this)) {
+                PermissionHelper.showPopupEnablementToast(this);
+                return true;
+            }
+
+            this.player.setRecovery();
+            getApplicationContext().sendBroadcast(getPlayerShutdownIntent());
+            getApplicationContext().startService(getSwitchIntent(PopupVideoPlayer.class));
+            return true;
+        }
+        return false;
+    }
+
+    @Override
+    public Intent getPlayerShutdownIntent() {
+        return new Intent(ACTION_CLOSE);
+    }
 }

app/src/main/java/org/schabi/newpipe/player/BasePlayer.java

@@ -26,6 +26,7 @@ import android.content.IntentFilter;
 import android.graphics.Bitmap;
 import android.media.AudioManager;
 import android.net.Uri;
+import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
 import android.text.TextUtils;
 import android.util.Log;
@@ -76,7 +77,6 @@ import java.util.concurrent.TimeUnit;
 
 import io.reactivex.Observable;
 import io.reactivex.android.schedulers.AndroidSchedulers;
-import io.reactivex.annotations.NonNull;
 import io.reactivex.disposables.Disposable;
 import io.reactivex.functions.Consumer;
 import io.reactivex.functions.Predicate;
@@ -111,6 +111,7 @@ public abstract class BasePlayer implements Player.EventListener, PlaybackListen
     public static final String PLAYBACK_QUALITY = "playback_quality";
     public static final String PLAY_QUEUE = "play_queue";
     public static final String APPEND_ONLY = "append_only";
+    public static final String SELECT_ON_APPEND = "select_on_append";
 
     /*//////////////////////////////////////////////////////////////////////////
     // Playback
@@ -134,6 +135,7 @@ public abstract class BasePlayer implements Player.EventListener, PlaybackListen
     protected final static int FAST_FORWARD_REWIND_AMOUNT = 10000; // 10 Seconds
     protected final static int PLAY_PREV_ACTIVATION_LIMIT = 5000; // 5 seconds
     protected final static int PROGRESS_LOOP_INTERVAL = 500;
+    protected final static int RECOVERY_SKIP_THRESHOLD = 3000; // 3 seconds
 
     protected SimpleExoPlayer simpleExoPlayer;
     protected AudioReactor audioReactor;
@@ -193,7 +195,7 @@ public abstract class BasePlayer implements Player.EventListener, PlaybackListen
                 .observeOn(AndroidSchedulers.mainThread())
                 .filter(new Predicate<Long>() {
                     @Override
-                    public boolean test(@NonNull Long aLong) throws Exception {
+                    public boolean test(Long aLong) throws Exception {
                         return isProgressLoopRunning();
                     }
                 })
@@ -217,7 +219,13 @@ public abstract class BasePlayer implements Player.EventListener, PlaybackListen
 
         // Resolve append intents
         if (intent.getBooleanExtra(APPEND_ONLY, false) && playQueue != null) {
+            int sizeBeforeAppend = playQueue.size();
             playQueue.append(queue.getStreams());
+
+            if (intent.getBooleanExtra(SELECT_ON_APPEND, false) && queue.getStreams().size() > 0) {
+                playQueue.setIndex(sizeBeforeAppend);
+            }
+
             return;
         }
 
@@ -235,7 +243,7 @@ public abstract class BasePlayer implements Player.EventListener, PlaybackListen
         initPlayback(queue);
     }
 
-    protected void initPlayback(@NonNull final PlayQueue queue) {
+    protected void initPlayback(final PlayQueue queue) {
         playQueue = queue;
         playQueue.init();
         playbackManager = new MediaSourceManager(this, playQueue);
@@ -453,16 +461,20 @@ public abstract class BasePlayer implements Player.EventListener, PlaybackListen
         final PlayQueueItem currentSourceItem = playQueue.getItem();
 
         // Check if already playing correct window
-        final boolean isCurrentWindowCorrect = simpleExoPlayer.getCurrentWindowIndex() == currentSourceIndex;
+        final boolean isCurrentWindowCorrect =
+                simpleExoPlayer.getCurrentWindowIndex() == currentSourceIndex;
 
         // Check if recovering
-        if (isCurrentWindowCorrect && currentSourceItem != null &&
-                currentSourceItem.getRecoveryPosition() != PlayQueueItem.RECOVERY_UNSET) {
+        if (isCurrentWindowCorrect && currentSourceItem != null) {
             /* Recovering with sub-second position may cause a long buffer delay in ExoPlayer,
              * rounding this position to the nearest second will help alleviate this.*/
             final long position = currentSourceItem.getRecoveryPosition();
 
-            if (DEBUG) Log.d(TAG, "Rewinding to recovery window: " + currentSourceIndex + " at: " + getTimeString((int)position));
+            /* Skip recovering if the recovery position is not set.*/
+            if (position == PlayQueueItem.RECOVERY_UNSET) return;
+
+            if (DEBUG) Log.d(TAG, "Rewinding to recovery window: " + currentSourceIndex +
+                    " at: " + getTimeString((int)position));
             simpleExoPlayer.seekTo(currentSourceItem.getRecoveryPosition());
             playQueue.unsetRecovery(currentSourceIndex);
         }
@@ -515,7 +527,6 @@ public abstract class BasePlayer implements Player.EventListener, PlaybackListen
                 break;
             case Player.STATE_READY: //3
                 recover();
-
                 if (!isPrepared) {
                     isPrepared = true;
                     onPrepared(playWhenReady);
@@ -545,14 +556,18 @@ public abstract class BasePlayer implements Player.EventListener, PlaybackListen
      * an error to the play queue based on if the current error can be skipped.
      *
      * This is done because ExoPlayer reports the source exceptions before window is
-     * transitioned on seamless playback.
+     * transitioned on seamless playback. Because player error causes ExoPlayer to go
+     * back to {@link Player#STATE_IDLE STATE_IDLE}, we reset and prepare the media source
+     * again to resume playback.
      *
-     * Because player error causes ExoPlayer to go back to {@link Player#STATE_IDLE STATE_IDLE},
-     * we reset and prepare the media source again to resume playback.<br><br>
+     * In the event that this error is produced during a valid stream playback, we save the
+     * current position so the playback may be recovered and resumed manually by the user. This
+     * happens only if the playback is {@link #RECOVERY_SKIP_THRESHOLD} milliseconds until complete.
+     * <br><br>
      *
      * {@link ExoPlaybackException#TYPE_UNEXPECTED TYPE_UNEXPECTED}: <br><br>
      * If a runtime error occurred, then we can try to recover it by restarting the playback
-     * after setting the timestamp recovery.
+     * after setting the timestamp recovery. <br><br>
      *
      * {@link ExoPlaybackException#TYPE_RENDERER TYPE_RENDERER}: <br><br>
      * If the renderer failed, treat the error as unrecoverable.
@@ -569,6 +584,10 @@ public abstract class BasePlayer implements Player.EventListener, PlaybackListen
 
         switch (error.type) {
             case ExoPlaybackException.TYPE_SOURCE:
+                if (simpleExoPlayer.getCurrentPosition() <
+                        simpleExoPlayer.getDuration() - RECOVERY_SKIP_THRESHOLD) {
+                    setRecovery();
+                }
                 playQueue.error(isCurrentWindowValid());
                 showStreamError(error);
                 break;
@@ -591,12 +610,12 @@ public abstract class BasePlayer implements Player.EventListener, PlaybackListen
         if (DEBUG) Log.d(TAG, "onPositionDiscontinuity() called with window index = [" + newWindowIndex + "]");
 
         // If the user selects a new track, then the discontinuity occurs after the index is changed.
-        // Therefore, the only source that causes a discrepancy would be autoplay,
+        // Therefore, the only source that causes a discrepancy would be gapless transition,
         // which can only offset the current track by +1.
-        if (newWindowIndex != playQueue.getIndex() && playbackManager != null) {
+        if (newWindowIndex == playQueue.getIndex() + 1) {
             playQueue.offsetIndex(+1);
-            playbackManager.load();
         }
+        playbackManager.load();
     }
 
     @Override
@@ -613,6 +632,8 @@ public abstract class BasePlayer implements Player.EventListener, PlaybackListen
         if (simpleExoPlayer == null) return;
         if (DEBUG) Log.d(TAG, "Blocking...");
 
+        currentItem = null;
+        currentInfo = null;
         simpleExoPlayer.stop();
         isPrepared = false;
 
@@ -631,17 +652,21 @@ public abstract class BasePlayer implements Player.EventListener, PlaybackListen
     }
 
     @Override
-    public void sync(@android.support.annotation.NonNull final PlayQueueItem item,
+    public void sync(@NonNull final PlayQueueItem item,
                      @Nullable final StreamInfo info) {
-        if (simpleExoPlayer == null) return;
-        if (DEBUG) Log.d(TAG, "Syncing...");
-
+        if (currentItem == item && currentInfo == info) return;
         currentItem = item;
         currentInfo = info;
 
+        if (DEBUG) Log.d(TAG, "Syncing...");
+        if (simpleExoPlayer == null) return;
+
         // Check if on wrong window
-        final int currentSourceIndex = playQueue.getIndex();
-        if (simpleExoPlayer.getCurrentWindowIndex() != currentSourceIndex) {
+        final int currentSourceIndex = playQueue.indexOf(item);
+        if (currentSourceIndex != playQueue.getIndex()) {
+            Log.e(TAG, "Play Queue may be desynchronized: item index=[" + currentSourceIndex +
+                    "], queue index=[" + playQueue.getIndex() + "]");
+        } else if (simpleExoPlayer.getCurrentWindowIndex() != currentSourceIndex || !isPlaying()) {
             final long startPos = info != null ? info.start_position : 0;
             if (DEBUG) Log.d(TAG, "Rewinding to correct window: " + currentSourceIndex + " at: " + getTimeString((int)startPos));
             simpleExoPlayer.seekTo(currentSourceIndex, startPos);
@@ -756,10 +781,6 @@ public abstract class BasePlayer implements Player.EventListener, PlaybackListen
         } else {
             playQueue.setIndex(index);
         }
-
-        if (!isPlaying()) {
-            onVideoPlayPause();
-        }
     }
 
     public void seekBy(int milliSeconds) {
@@ -826,15 +847,15 @@ public abstract class BasePlayer implements Player.EventListener, PlaybackListen
     }
 
     public String getVideoUrl() {
-        return currentItem == null ? null : currentItem.getUrl();
+        return currentItem == null ? context.getString(R.string.unknown_content) : currentItem.getUrl();
     }
 
     public String getVideoTitle() {
-        return currentItem == null ? null : currentItem.getTitle();
+        return currentItem == null ? context.getString(R.string.unknown_content) : currentItem.getTitle();
     }
 
     public String getUploaderName() {
-        return currentItem == null ? null : currentItem.getUploader();
+        return currentItem == null ? context.getString(R.string.unknown_content) : currentItem.getUploader();
     }
 
     public boolean isCompleted() {
@@ -870,8 +891,10 @@ public abstract class BasePlayer implements Player.EventListener, PlaybackListen
     }
 
     public PlaybackParameters getPlaybackParameters() {
+        final PlaybackParameters defaultParameters = new PlaybackParameters(1f, 1f);
+        if (simpleExoPlayer == null) return defaultParameters;
         final PlaybackParameters parameters = simpleExoPlayer.getPlaybackParameters();
-        return parameters == null ? new PlaybackParameters(1f, 1f) : parameters;
+        return parameters == null ? defaultParameters : parameters;
     }
 
     public void setPlaybackParameters(float speed, float pitch) {
@@ -900,7 +923,9 @@ public abstract class BasePlayer implements Player.EventListener, PlaybackListen
         final int queuePos = playQueue.getIndex();
         final long windowPos = simpleExoPlayer.getCurrentPosition();
 
-        setRecovery(queuePos, windowPos);
+        if (windowPos > 0 && windowPos <= simpleExoPlayer.getDuration()) {
+            setRecovery(queuePos, windowPos);
+        }
     }
 
     public void setRecovery(final int queuePos, final long windowPos) {

app/src/main/java/org/schabi/newpipe/player/MainVideoPlayer.java

@@ -22,11 +22,15 @@ package org.schabi.newpipe.player;
 import android.app.Activity;
 import android.content.Context;
 import android.content.Intent;
+import android.content.SharedPreferences;
 import android.content.pm.ActivityInfo;
+import android.content.res.Configuration;
 import android.graphics.Color;
 import android.media.AudioManager;
 import android.os.Build;
 import android.os.Bundle;
+import android.preference.PreferenceManager;
+import android.provider.Settings;
 import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
 import android.support.v7.widget.RecyclerView;
@@ -48,6 +52,7 @@ import com.google.android.exoplayer2.Player;
 import org.schabi.newpipe.R;
 import org.schabi.newpipe.extractor.stream.StreamInfo;
 import org.schabi.newpipe.extractor.stream.VideoStream;
+import org.schabi.newpipe.fragments.OnScrollBelowItemsListener;
 import org.schabi.newpipe.player.helper.PlayerHelper;
 import org.schabi.newpipe.playlist.PlayQueueItem;
 import org.schabi.newpipe.playlist.PlayQueueItemBuilder;
@@ -56,6 +61,7 @@ import org.schabi.newpipe.util.AnimationUtils;
 import org.schabi.newpipe.util.ListHelper;
 import org.schabi.newpipe.util.NavigationHelper;
 import org.schabi.newpipe.util.PermissionHelper;
+import org.schabi.newpipe.util.PopupMenuIconHacker;
 import org.schabi.newpipe.util.ThemeHelper;
 
 import java.util.List;
@@ -70,12 +76,15 @@ import static org.schabi.newpipe.util.AnimationUtils.animateView;
 public final class MainVideoPlayer extends Activity {
     private static final String TAG = ".MainVideoPlayer";
     private static final boolean DEBUG = BasePlayer.DEBUG;
+    private static final String PLAYER_STATE_INTENT = "player_state_intent";
 
     private GestureDetector gestureDetector;
 
     private boolean activityPaused;
     private VideoPlayerImpl playerImpl;
 
+    private SharedPreferences defaultPreferences;
+
     /*//////////////////////////////////////////////////////////////////////////
     // Activity LifeCycle
     //////////////////////////////////////////////////////////////////////////*/
@@ -84,11 +93,19 @@ public final class MainVideoPlayer extends Activity {
     protected void onCreate(@Nullable Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         if (DEBUG) Log.d(TAG, "onCreate() called with: savedInstanceState = [" + savedInstanceState + "]");
+        defaultPreferences = PreferenceManager.getDefaultSharedPreferences(this);
         ThemeHelper.setTheme(this);
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) getWindow().setStatusBarColor(Color.BLACK);
         setVolumeControlStream(AudioManager.STREAM_MUSIC);
 
-        if (getIntent() == null) {
+        final Intent intent;
+        if (savedInstanceState != null && savedInstanceState.getParcelable(PLAYER_STATE_INTENT) != null) {
+            intent = savedInstanceState.getParcelable(PLAYER_STATE_INTENT);
+        } else {
+            intent = getIntent();
+        }
+
+        if (intent == null) {
             Toast.makeText(this, R.string.general_error, Toast.LENGTH_SHORT).show();
             finish();
             return;
@@ -98,7 +115,24 @@ public final class MainVideoPlayer extends Activity {
         setContentView(R.layout.activity_main_player);
         playerImpl = new VideoPlayerImpl(this);
         playerImpl.setup(findViewById(android.R.id.content));
-        playerImpl.handleIntent(getIntent());
+        playerImpl.handleIntent(intent);
+    }
+
+    @Override
+    protected void onSaveInstanceState(Bundle outState) {
+        super.onSaveInstanceState(outState);
+        if (this.playerImpl == null) return;
+
+        final Intent intent = NavigationHelper.getPlayerIntent(
+                getApplicationContext(),
+                this.getClass(),
+                this.playerImpl.getPlayQueue(),
+                this.playerImpl.getRepeatMode(),
+                this.playerImpl.getPlaybackSpeed(),
+                this.playerImpl.getPlaybackPitch(),
+                this.playerImpl.getPlaybackQuality()
+        );
+        outState.putParcelable(PLAYER_STATE_INTENT, intent);
     }
 
     @Override
@@ -141,6 +175,11 @@ public final class MainVideoPlayer extends Activity {
 
             activityPaused = false;
         }
+        if(globalScreenOrientationLocked()) {
+            boolean lastOrientationWasLandscape
+                    = defaultPreferences.getBoolean(getString(R.string.last_orientation_landscape_key), false);
+            setLandScape(lastOrientationWasLandscape);
+        }
     }
 
     @Override
@@ -150,6 +189,17 @@ public final class MainVideoPlayer extends Activity {
         if (playerImpl != null) playerImpl.destroy();
     }
 
+    @Override
+    public void onConfigurationChanged(Configuration newConfig) {
+        super.onConfigurationChanged(newConfig);
+
+        if (playerImpl.isSomePopupMenuVisible()) {
+            playerImpl.moreOptionsPopupMenu.dismiss();
+            playerImpl.getQualityPopupMenu().dismiss();
+            playerImpl.getPlaybackSpeedPopupMenu().dismiss();
+        }
+    }
+
     /*//////////////////////////////////////////////////////////////////////////
     // Utils
     //////////////////////////////////////////////////////////////////////////*/
@@ -182,11 +232,28 @@ public final class MainVideoPlayer extends Activity {
     }
 
     private void toggleOrientation() {
-        setRequestedOrientation(getResources().getDisplayMetrics().heightPixels > getResources().getDisplayMetrics().widthPixels
+        setLandScape(!isLandScape());
+        defaultPreferences.edit()
+                .putBoolean(getString(R.string.last_orientation_landscape_key), !isLandScape())
+                .apply();
+    }
+
+    private boolean isLandScape() {
+        return getResources().getDisplayMetrics().heightPixels < getResources().getDisplayMetrics().widthPixels;
+    }
+
+    private void setLandScape(boolean v) {
+        setRequestedOrientation(v
                 ? ActivityInfo.SCREEN_ORIENTATION_SENSOR_LANDSCAPE
                 : ActivityInfo.SCREEN_ORIENTATION_SENSOR_PORTRAIT);
     }
 
+    private boolean globalScreenOrientationLocked() {
+        // 1: Screen orientation changes using acelerometer
+        // 0: Screen orientatino is locked
+        return !(android.provider.Settings.System.getInt(getContentResolver(), Settings.System.ACCELEROMETER_ROTATION, 0) == 1);
+    }
+
     protected void setRepeatModeButton(final ImageButton imageButton, final int repeatMode) {
         switch (repeatMode) {
             case Player.REPEAT_MODE_OFF:
@@ -222,7 +289,6 @@ public final class MainVideoPlayer extends Activity {
         private ImageButton repeatButton;
         private ImageButton shuffleButton;
 
-        private ImageButton screenRotationButton;
         private ImageButton playPauseButton;
         private ImageButton playPreviousButton;
         private ImageButton playNextButton;
@@ -234,6 +300,10 @@ public final class MainVideoPlayer extends Activity {
 
         private boolean queueVisible;
 
+        private ImageButton moreOptionsButton;
+        public int moreOptionsPopupMenuGroupId = 89;
+        public PopupMenu moreOptionsPopupMenu;
+
         VideoPlayerImpl(final Context context) {
             super("VideoPlayerImpl" + MainVideoPlayer.TAG, context);
         }
@@ -249,10 +319,12 @@ public final class MainVideoPlayer extends Activity {
             this.repeatButton = rootView.findViewById(R.id.repeatButton);
             this.shuffleButton = rootView.findViewById(R.id.shuffleButton);
 
-            this.screenRotationButton = rootView.findViewById(R.id.screenRotationButton);
             this.playPauseButton = rootView.findViewById(R.id.playPauseButton);
             this.playPreviousButton = rootView.findViewById(R.id.playPreviousButton);
             this.playNextButton = rootView.findViewById(R.id.playNextButton);
+            this.moreOptionsButton = rootView.findViewById(R.id.moreOptionsButton);
+            this.moreOptionsPopupMenu = new PopupMenu(context, moreOptionsButton);
+            buildMoreOptionsMenu();
 
             titleTextView.setSelected(true);
             channelTextView.setSelected(true);
@@ -276,7 +348,7 @@ public final class MainVideoPlayer extends Activity {
             playPauseButton.setOnClickListener(this);
             playPreviousButton.setOnClickListener(this);
             playNextButton.setOnClickListener(this);
-            screenRotationButton.setOnClickListener(this);
+            moreOptionsButton.setOnClickListener(this);
         }
 
         /*//////////////////////////////////////////////////////////////////////////
@@ -305,7 +377,7 @@ public final class MainVideoPlayer extends Activity {
             titleTextView.setText(getVideoTitle());
             channelTextView.setText(getUploaderName());
 
-            playPauseButton.setImageResource(R.drawable.ic_pause_white);
+            //playPauseButton.setImageResource(R.drawable.ic_pause_white);
         }
 
         @Override
@@ -325,9 +397,8 @@ public final class MainVideoPlayer extends Activity {
             if (DEBUG) Log.d(TAG, "onFullScreenButtonClicked() called");
             if (simpleExoPlayer == null) return;
 
-            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M
-                    && !PermissionHelper.checkSystemAlertWindowPermission(MainVideoPlayer.this)) {
-                Toast.makeText(MainVideoPlayer.this, R.string.msg_popup_permission, Toast.LENGTH_LONG).show();
+            if (!PermissionHelper.isPopupEnabled(context)) {
+                PermissionHelper.showPopupEnablementToast(context);
                 return;
             }
 
@@ -348,6 +419,28 @@ public final class MainVideoPlayer extends Activity {
             finish();
         }
 
+        public void onPlayBackgroundButtonClicked() {
+            if (DEBUG) Log.d(TAG, "onPlayBackgroundButtonClicked() called");
+            if (playerImpl.getPlayer() == null) return;
+
+            setRecovery();
+            final Intent intent = NavigationHelper.getPlayerIntent(
+                    context,
+                    BackgroundPlayer.class,
+                    this.getPlayQueue(),
+                    this.getRepeatMode(),
+                    this.getPlaybackSpeed(),
+                    this.getPlaybackPitch(),
+                    this.getPlaybackQuality()
+            );
+            context.startService(intent);
+
+            ((View) getControlAnimationView().getParent()).setVisibility(View.GONE);
+            destroy();
+            finish();
+        }
+
+
         @Override
         public void onClick(View v) {
             super.onClick(v);
@@ -360,9 +453,6 @@ public final class MainVideoPlayer extends Activity {
             } else if (v.getId() == playNextButton.getId()) {
                 onPlayNext();
 
-            } else if (v.getId() == screenRotationButton.getId()) {
-                onScreenRotationClicked();
-
             } else if (v.getId() == queueButton.getId()) {
                 onQueueClicked();
                 return;
@@ -372,16 +462,15 @@ public final class MainVideoPlayer extends Activity {
             } else if (v.getId() == shuffleButton.getId()) {
                 onShuffleClicked();
                 return;
+            } else if (v.getId() == moreOptionsButton.getId()) {
+                onMoreOptionsClicked();
             }
 
             if (getCurrentState() != STATE_COMPLETED) {
                 getControlsVisibilityHandler().removeCallbacksAndMessages(null);
-                animateView(getControlsRoot(), true, 300, 0, new Runnable() {
-                    @Override
-                    public void run() {
-                        if (getCurrentState() == STATE_PLAYING && !isSomePopupMenuVisible()) {
-                            hideControls(300, DEFAULT_CONTROLS_HIDE_TIME);
-                        }
+                animateView(getControlsRoot(), true, 300, 0, () -> {
+                    if (getCurrentState() == STATE_PLAYING && !isSomePopupMenuVisible()) {
+                        hideControls(300, DEFAULT_CONTROLS_HIDE_TIME);
                     }
                 });
             }
@@ -397,7 +486,7 @@ public final class MainVideoPlayer extends Activity {
             getControlsRoot().setVisibility(View.INVISIBLE);
             queueLayout.setVisibility(View.VISIBLE);
 
-            itemsList.smoothScrollToPosition(playQueue.getIndex());
+            itemsList.scrollToPosition(playQueue.getIndex());
         }
 
         private void onQueueClosed() {
@@ -405,9 +494,18 @@ public final class MainVideoPlayer extends Activity {
             queueVisible = false;
         }
 
+        private void onMoreOptionsClicked() {
+            if (DEBUG) Log.d(TAG, "onMoreOptionsClicked() called");
+
+            moreOptionsPopupMenu.show();
+            isSomePopupMenuVisible = true;
+            showControls(300);
+        }
+
         private void onScreenRotationClicked() {
             if (DEBUG) Log.d(TAG, "onScreenRotationClicked() called");
             toggleOrientation();
+            showControlsThenHide();
         }
 
         @Override
@@ -463,12 +561,9 @@ public final class MainVideoPlayer extends Activity {
         @Override
         public void onPlaying() {
             super.onPlaying();
-            animateView(playPauseButton, AnimationUtils.Type.SCALE_AND_ALPHA, false, 80, 0, new Runnable() {
-                @Override
-                public void run() {
-                    playPauseButton.setImageResource(R.drawable.ic_pause_white);
-                    animatePlayButtons(true, 200);
-                }
+            animateView(playPauseButton, AnimationUtils.Type.SCALE_AND_ALPHA, false, 80, 0, () -> {
+                playPauseButton.setImageResource(R.drawable.ic_pause_white);
+                animatePlayButtons(true, 200);
             });
             showSystemUi();
             getRootView().setKeepScreenOn(true);
@@ -477,12 +572,9 @@ public final class MainVideoPlayer extends Activity {
         @Override
         public void onPaused() {
             super.onPaused();
-            animateView(playPauseButton, AnimationUtils.Type.SCALE_AND_ALPHA, false, 80, 0, new Runnable() {
-                @Override
-                public void run() {
-                    playPauseButton.setImageResource(R.drawable.ic_play_arrow_white);
-                    animatePlayButtons(true, 200);
-                }
+            animateView(playPauseButton, AnimationUtils.Type.SCALE_AND_ALPHA, false, 80, 0, () -> {
+                playPauseButton.setImageResource(R.drawable.ic_play_arrow_white);
+                animatePlayButtons(true, 200);
             });
 
             showSystemUi();
@@ -500,12 +592,9 @@ public final class MainVideoPlayer extends Activity {
         @Override
         public void onCompleted() {
             showSystemUi();
-            animateView(playPauseButton, AnimationUtils.Type.SCALE_AND_ALPHA, false, 0, 0, new Runnable() {
-                @Override
-                public void run() {
-                    playPauseButton.setImageResource(R.drawable.ic_replay_white);
-                    animatePlayButtons(true, 300);
-                }
+            animateView(playPauseButton, AnimationUtils.Type.SCALE_AND_ALPHA, false, 0, 0, () -> {
+                playPauseButton.setImageResource(R.drawable.ic_replay_white);
+                animatePlayButtons(true, 300);
             });
 
             getRootView().setKeepScreenOn(false);
@@ -534,17 +623,10 @@ public final class MainVideoPlayer extends Activity {
         public void hideControls(final long duration, long delay) {
             if (DEBUG) Log.d(TAG, "hideControls() called with: delay = [" + delay + "]");
             getControlsVisibilityHandler().removeCallbacksAndMessages(null);
-            getControlsVisibilityHandler().postDelayed(new Runnable() {
-                @Override
-                public void run() {
-                    animateView(getControlsRoot(), false, duration, 0, new Runnable() {
-                        @Override
-                        public void run() {
-                            hideSystemUi();
-                        }
-                    });
-                }
-            }, delay);
+            getControlsVisibilityHandler().postDelayed(() ->
+                    animateView(getControlsRoot(), false, duration, 0, MainVideoPlayer.this::hideSystemUi),
+                    delay
+            );
         }
 
         private void updatePlaybackButtons() {
@@ -555,6 +637,42 @@ public final class MainVideoPlayer extends Activity {
             setShuffleButton(shuffleButton, playQueue.isShuffled());
         }
 
+        private void buildMoreOptionsMenu() {
+            this.moreOptionsPopupMenu.getMenuInflater().inflate(R.menu.menu_videooptions,
+                    moreOptionsPopupMenu.getMenu());
+
+            moreOptionsPopupMenu.setOnMenuItemClickListener(menuItem -> {
+                switch (menuItem.getItemId()) {
+                    case R.id.toggleOrientation:
+                        onScreenRotationClicked();
+                        break;
+                    case R.id.switchPopup:
+                        onFullScreenButtonClicked();
+                        break;
+                    case R.id.switchBackground:
+                        onPlayBackgroundButtonClicked();
+                        break;
+                }
+                return false;
+            });
+
+            try {
+                PopupMenuIconHacker.setShowPopupIcon(moreOptionsPopupMenu);
+            } catch (Exception e) {
+                e.printStackTrace();
+            }
+
+            // fix icon theme
+            if(ThemeHelper.isLightThemeSelected(MainVideoPlayer.this)) {
+                moreOptionsPopupMenu.getMenu()
+                        .findItem(R.id.toggleOrientation)
+                        .setIcon(R.drawable.ic_screen_rotation_black_24dp);
+                moreOptionsPopupMenu.getMenu()
+                        .findItem(R.id.switchPopup)
+                        .setIcon(R.drawable.ic_fullscreen_exit_black_24dp);
+            }
+        }
+
         private void buildQueue() {
             queueLayout = findViewById(R.id.playQueuePanel);
 
@@ -565,17 +683,28 @@ public final class MainVideoPlayer extends Activity {
             itemsList.setClickable(true);
             itemsList.setLongClickable(true);
 
+            itemsList.clearOnScrollListeners();
+            itemsList.addOnScrollListener(getQueueScrollListener());
+
             itemTouchHelper = new ItemTouchHelper(getItemTouchCallback());
             itemTouchHelper.attachToRecyclerView(itemsList);
 
             playQueueAdapter.setSelectedListener(getOnSelectedListener());
 
-            itemsListCloseButton.setOnClickListener(new View.OnClickListener() {
+            itemsListCloseButton.setOnClickListener(view -> onQueueClosed());
+        }
+
+        private OnScrollBelowItemsListener getQueueScrollListener() {
+            return new OnScrollBelowItemsListener() {
                 @Override
-                public void onClick(View view) {
-                    onQueueClosed();
+                public void onScrolledDown(RecyclerView recyclerView) {
+                    if (playQueue != null && !playQueue.isComplete()) {
+                        playQueue.fetch();
+                    } else if (itemsList != null) {
+                        itemsList.clearOnScrollListeners();
+                    }
                 }
-            });
+            };
         }
 
         private ItemTouchHelper.SimpleCallback getItemTouchCallback() {
@@ -785,4 +914,4 @@ public final class MainVideoPlayer extends Activity {
         }
 
     }
-}
+}

app/src/main/java/org/schabi/newpipe/player/PopupVideoPlayer.java

@@ -31,7 +31,6 @@ import android.content.res.Configuration;
 import android.graphics.Bitmap;
 import android.graphics.PixelFormat;
 import android.os.Build;
-import android.os.Handler;
 import android.os.IBinder;
 import android.preference.PreferenceManager;
 import android.support.annotation.NonNull;
@@ -44,47 +43,30 @@ import android.view.Gravity;
 import android.view.MotionEvent;
 import android.view.View;
 import android.view.WindowManager;
+import android.widget.ImageButton;
 import android.widget.PopupMenu;
 import android.widget.RemoteViews;
 import android.widget.SeekBar;
 import android.widget.TextView;
-import android.widget.Toast;
 
 import com.google.android.exoplayer2.PlaybackParameters;
 import com.google.android.exoplayer2.Player;
 
 import org.schabi.newpipe.BuildConfig;
-import org.schabi.newpipe.MainActivity;
 import org.schabi.newpipe.R;
-import org.schabi.newpipe.ReCaptchaActivity;
-import org.schabi.newpipe.extractor.NewPipe;
-import org.schabi.newpipe.extractor.exceptions.ContentNotAvailableException;
-import org.schabi.newpipe.extractor.exceptions.ParsingException;
-import org.schabi.newpipe.extractor.exceptions.ReCaptchaException;
-import org.schabi.newpipe.extractor.services.youtube.YoutubeStreamExtractor;
 import org.schabi.newpipe.extractor.stream.StreamInfo;
 import org.schabi.newpipe.extractor.stream.VideoStream;
 import org.schabi.newpipe.player.event.PlayerEventListener;
-import org.schabi.newpipe.player.old.PlayVideoActivity;
 import org.schabi.newpipe.player.helper.LockManager;
+import org.schabi.newpipe.player.helper.PlayerHelper;
+import org.schabi.newpipe.player.old.PlayVideoActivity;
 import org.schabi.newpipe.playlist.PlayQueueItem;
-import org.schabi.newpipe.playlist.SinglePlayQueue;
-import org.schabi.newpipe.report.ErrorActivity;
-import org.schabi.newpipe.report.UserAction;
-import org.schabi.newpipe.util.Constants;
-import org.schabi.newpipe.util.ExtractorHelper;
 import org.schabi.newpipe.util.ListHelper;
 import org.schabi.newpipe.util.NavigationHelper;
 import org.schabi.newpipe.util.ThemeHelper;
 
-import java.io.IOException;
 import java.util.List;
 
-import io.reactivex.android.schedulers.AndroidSchedulers;
-import io.reactivex.disposables.Disposable;
-import io.reactivex.functions.Consumer;
-import io.reactivex.schedulers.Schedulers;
-
 import static org.schabi.newpipe.player.helper.PlayerHelper.isUsingOldPlayer;
 import static org.schabi.newpipe.util.AnimationUtils.animateView;
 
@@ -96,12 +78,10 @@ import static org.schabi.newpipe.util.AnimationUtils.animateView;
 public final class PopupVideoPlayer extends Service {
     private static final String TAG = ".PopupVideoPlayer";
     private static final boolean DEBUG = BasePlayer.DEBUG;
-    private static final int SHUTDOWN_FLING_VELOCITY = 10000;
 
     private static final int NOTIFICATION_ID = 40028922;
     public static final String ACTION_CLOSE = "org.schabi.newpipe.player.PopupVideoPlayer.CLOSE";
     public static final String ACTION_PLAY_PAUSE = "org.schabi.newpipe.player.PopupVideoPlayer.PLAY_PAUSE";
-    public static final String ACTION_OPEN_CONTROLS = "org.schabi.newpipe.player.PopupVideoPlayer.OPEN_CONTROLS";
     public static final String ACTION_REPEAT = "org.schabi.newpipe.player.PopupVideoPlayer.REPEAT";
 
     private static final String POPUP_SAVED_WIDTH = "popup_saved_width";
@@ -112,6 +92,9 @@ public final class PopupVideoPlayer extends Service {
     private WindowManager.LayoutParams windowLayoutParams;
     private GestureDetector gestureDetector;
 
+    private int shutdownFlingVelocity;
+    private int tossFlingVelocity;
+
     private float screenWidth, screenHeight;
     private float popupWidth, popupHeight;
 
@@ -123,8 +106,8 @@ public final class PopupVideoPlayer extends Service {
     private RemoteViews notRemoteView;
 
     private VideoPlayerImpl playerImpl;
-    private Disposable currentWorker;
     private LockManager lockManager;
+
     /*//////////////////////////////////////////////////////////////////////////
     // Service-Activity Binder
     //////////////////////////////////////////////////////////////////////////*/
@@ -155,31 +138,8 @@ public final class PopupVideoPlayer extends Service {
         if (playerImpl.getPlayer() == null) initPopup();
         if (!playerImpl.isPlaying()) playerImpl.getPlayer().setPlayWhenReady(true);
 
-        if (intent != null && intent.getStringExtra(Constants.KEY_URL) != null) {
-            final int serviceId = intent.getIntExtra(Constants.KEY_SERVICE_ID, 0);
-            final String url = intent.getStringExtra(Constants.KEY_URL);
+        playerImpl.handleIntent(intent);
 
-            playerImpl.setStartedFromNewPipe(false);
-
-            final FetcherHandler fetcherRunnable = new FetcherHandler(this, serviceId, url);
-            currentWorker = ExtractorHelper.getStreamInfo(serviceId,url,false)
-                    .subscribeOn(Schedulers.io())
-                    .observeOn(AndroidSchedulers.mainThread())
-                    .subscribe(new Consumer<StreamInfo>() {
-                        @Override
-                        public void accept(@NonNull StreamInfo info) throws Exception {
-                            fetcherRunnable.onReceive(info);
-                        }
-                    }, new Consumer<Throwable>() {
-                        @Override
-                        public void accept(@NonNull Throwable throwable) throws Exception {
-                            fetcherRunnable.onError(throwable);
-                        }
-                    });
-        } else {
-            playerImpl.setStartedFromNewPipe(true);
-            playerImpl.handleIntent(intent);
-        }
         return START_NOT_STICKY;
     }
 
@@ -211,12 +171,14 @@ public final class PopupVideoPlayer extends Service {
         View rootView = View.inflate(this, R.layout.player_popup, null);
         playerImpl.setup(rootView);
 
+        shutdownFlingVelocity = PlayerHelper.getShutdownFlingVelocity(this);
+        tossFlingVelocity = PlayerHelper.getTossFlingVelocity(this);
+
         updateScreenSize();
 
+        final boolean popupRememberSizeAndPos = PlayerHelper.isRememberingPopupDimensions(this);
+        final float defaultSize = getResources().getDimension(R.dimen.popup_default_width);
         SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
-        boolean popupRememberSizeAndPos = sharedPreferences.getBoolean(getString(R.string.popup_remember_size_pos_key), true);
-
-        float defaultSize = getResources().getDimension(R.dimen.popup_default_width);
         popupWidth = popupRememberSizeAndPos ? sharedPreferences.getFloat(POPUP_SAVED_WIDTH, defaultSize) : defaultSize;
 
         final int layoutParamType = Build.VERSION.SDK_INT < android.os.Build.VERSION_CODES.O ? WindowManager.LayoutParams.TYPE_PHONE : WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY;
@@ -261,16 +223,19 @@ public final class PopupVideoPlayer extends Service {
                 PendingIntent.getBroadcast(this, NOTIFICATION_ID, new Intent(ACTION_PLAY_PAUSE), PendingIntent.FLAG_UPDATE_CURRENT));
         notRemoteView.setOnClickPendingIntent(R.id.notificationStop,
                 PendingIntent.getBroadcast(this, NOTIFICATION_ID, new Intent(ACTION_CLOSE), PendingIntent.FLAG_UPDATE_CURRENT));
-        notRemoteView.setOnClickPendingIntent(R.id.notificationContent,
-                PendingIntent.getBroadcast(this, NOTIFICATION_ID, new Intent(ACTION_OPEN_CONTROLS), PendingIntent.FLAG_UPDATE_CURRENT));
         notRemoteView.setOnClickPendingIntent(R.id.notificationRepeat,
                 PendingIntent.getBroadcast(this, NOTIFICATION_ID, new Intent(ACTION_REPEAT), PendingIntent.FLAG_UPDATE_CURRENT));
 
+        // Starts popup player activity -- attempts to unlock lockscreen
+        final Intent intent = NavigationHelper.getPopupPlayerActivityIntent(this);
+        notRemoteView.setOnClickPendingIntent(R.id.notificationContent,
+                PendingIntent.getActivity(this, NOTIFICATION_ID, intent, PendingIntent.FLAG_UPDATE_CURRENT));
+
         setRepeatModeRemote(notRemoteView, playerImpl.getRepeatMode());
 
         return new NotificationCompat.Builder(this, getString(R.string.notification_channel_id))
                 .setOngoing(true)
-                .setSmallIcon(R.drawable.ic_play_arrow_white)
+                .setSmallIcon(R.drawable.ic_newpipe_triangle_white)
                 .setVisibility(NotificationCompat.VISIBILITY_PUBLIC)
                 .setContent(notRemoteView);
     }
@@ -305,7 +270,6 @@ public final class PopupVideoPlayer extends Service {
         }
         if (lockManager != null) lockManager.releaseWifiAndCpu();
         if (notificationManager != null) notificationManager.cancel(NOTIFICATION_ID);
-        if (currentWorker != null) currentWorker.dispose();
         mBinder = null;
         playerImpl = null;
 
@@ -313,15 +277,6 @@ public final class PopupVideoPlayer extends Service {
         stopSelf();
     }
 
-    public void openControl(final Context context) {
-        Intent intent = new Intent(context, PopupVideoPlayerActivity.class);
-        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.N) {
-            intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
-        }
-        context.startActivity(intent);
-        context.sendBroadcast(new Intent(Intent.ACTION_CLOSE_SYSTEM_DIALOGS));
-    }
-
     /*//////////////////////////////////////////////////////////////////////////
     // Utils
     //////////////////////////////////////////////////////////////////////////*/
@@ -366,6 +321,7 @@ public final class PopupVideoPlayer extends Service {
     }
 
     private void updatePopupSize(int width, int height) {
+        if (playerImpl == null) return;
         if (DEBUG) Log.d(TAG, "updatePopupSize() called with: width = [" + width + "], height = [" + height + "]");
 
         width = (int) (width > maximumWidth ? maximumWidth : width < minimumWidth ? minimumWidth : width);
@@ -404,6 +360,7 @@ public final class PopupVideoPlayer extends Service {
 
     protected class VideoPlayerImpl extends VideoPlayer {
         private TextView resizingIndicator;
+        private ImageButton fullScreenButton;
 
         @Override
         public void handleIntent(Intent intent) {
@@ -421,6 +378,8 @@ public final class PopupVideoPlayer extends Service {
         public void initViews(View rootView) {
             super.initViews(rootView);
             resizingIndicator = rootView.findViewById(R.id.resizing_indicator);
+            fullScreenButton = rootView.findViewById(R.id.fullScreenButton);
+            fullScreenButton.setOnClickListener(v -> onFullScreenButtonClicked());
         }
 
         @Override
@@ -460,12 +419,11 @@ public final class PopupVideoPlayer extends Service {
                         this.getPlaybackPitch(),
                         this.getPlaybackQuality()
                 );
-                if (!isStartedFromNewPipe()) intent.putExtra(VideoPlayer.STARTED_FROM_NEWPIPE, false);
                 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
             } else {
                 intent = new Intent(PopupVideoPlayer.this, PlayVideoActivity.class)
                         .putExtra(PlayVideoActivity.VIDEO_TITLE, getVideoTitle())
-                        .putExtra(PlayVideoActivity.STREAM_URL, getSelectedVideoStream().url)
+                        .putExtra(PlayVideoActivity.STREAM_URL, getSelectedVideoStream().getUrl())
                         .putExtra(PlayVideoActivity.VIDEO_URL, getVideoUrl())
                         .putExtra(PlayVideoActivity.START_POSITION, Math.round(getPlayer().getCurrentPosition() / 1000f));
                 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
@@ -577,6 +535,7 @@ public final class PopupVideoPlayer extends Service {
 
         @Override
         public void sync(@NonNull PlayQueueItem item, @Nullable StreamInfo info) {
+            if (currentItem == item && currentInfo == info) return;
             super.sync(item, info);
             updateMetadata();
         }
@@ -597,7 +556,6 @@ public final class PopupVideoPlayer extends Service {
             if (DEBUG) Log.d(TAG, "setupBroadcastReceiver() called with: intentFilter = [" + intentFilter + "]");
             intentFilter.addAction(ACTION_CLOSE);
             intentFilter.addAction(ACTION_PLAY_PAUSE);
-            intentFilter.addAction(ACTION_OPEN_CONTROLS);
             intentFilter.addAction(ACTION_REPEAT);
 
             intentFilter.addAction(Intent.ACTION_SCREEN_ON);
@@ -616,9 +574,6 @@ public final class PopupVideoPlayer extends Service {
                 case ACTION_PLAY_PAUSE:
                     onVideoPlayPause();
                     break;
-                case ACTION_OPEN_CONTROLS:
-                    openControl(getApplicationContext());
-                    break;
                 case ACTION_REPEAT:
                     onRepeatClicked();
                     break;
@@ -791,11 +746,20 @@ public final class PopupVideoPlayer extends Service {
 
         @Override
         public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
+            if (DEBUG) Log.d(TAG, "Fling velocity: dX=[" + velocityX + "], dY=[" + velocityY + "]");
             if (playerImpl == null) return false;
-            if (Math.abs(velocityX) > SHUTDOWN_FLING_VELOCITY) {
-                if (DEBUG) Log.d(TAG, "Popup close fling velocity= " + velocityX);
+
+            final float absVelocityX = Math.abs(velocityX);
+            final float absVelocityY = Math.abs(velocityY);
+            if (absVelocityX > shutdownFlingVelocity) {
                 onClose();
                 return true;
+            } else if (Math.max(absVelocityX, absVelocityY) > tossFlingVelocity) {
+                if (absVelocityX > tossFlingVelocity) windowLayoutParams.x = (int) velocityX;
+                if (absVelocityY > tossFlingVelocity) windowLayoutParams.y = (int) velocityY;
+                checkPositionBounds();
+                windowManager.updateViewLayout(playerImpl.getRootView(), windowLayoutParams);
+                return true;
             }
             return false;
         }
@@ -835,6 +799,8 @@ public final class PopupVideoPlayer extends Service {
                 }
                 savePositionAndSize();
             }
+
+            v.performClick();
             return true;
         }
 
@@ -862,67 +828,4 @@ public final class PopupVideoPlayer extends Service {
             return true;
         }
     }
-
-    /**
-     * Fetcher handler used if open by a link out of NewPipe
-     */
-    private class FetcherHandler {
-        private final int serviceId;
-        private final String url;
-
-        private final Context context;
-        private final Handler mainHandler;
-
-        FetcherHandler(Context context, int serviceId, String url) {
-            this.mainHandler = new Handler(PopupVideoPlayer.this.getMainLooper());
-            this.context = context;
-            this.url = url;
-            this.serviceId = serviceId;
-        }
-
-        /*package-private*/ void onReceive(final StreamInfo info) {
-            mainHandler.post(new Runnable() {
-                @Override
-                public void run() {
-                    playerImpl.initPlayback(new SinglePlayQueue(info));
-                }
-            });
-        }
-
-        protected void onError(final Throwable exception) {
-            if (DEBUG) Log.d(TAG, "onError() called with: exception = [" + exception + "]");
-            exception.printStackTrace();
-            mainHandler.post(new Runnable() {
-                @Override
-                public void run() {
-                    if (exception instanceof ReCaptchaException) {
-                        onReCaptchaException();
-                    } else if (exception instanceof IOException) {
-                        Toast.makeText(context, R.string.network_error, Toast.LENGTH_LONG).show();
-                    } else if (exception instanceof YoutubeStreamExtractor.GemaException) {
-                        Toast.makeText(context, R.string.blocked_by_gema, Toast.LENGTH_LONG).show();
-                    } else if (exception instanceof YoutubeStreamExtractor.LiveStreamException) {
-                        Toast.makeText(context, R.string.live_streams_not_supported, Toast.LENGTH_LONG).show();
-                    } else if (exception instanceof ContentNotAvailableException) {
-                        Toast.makeText(context, R.string.content_not_available, Toast.LENGTH_LONG).show();
-                    } else {
-                        int errorId = exception instanceof YoutubeStreamExtractor.DecryptException ? R.string.youtube_signature_decryption_error :
-                                exception instanceof ParsingException ? R.string.parsing_error : R.string.general_error;
-                        ErrorActivity.reportError(mainHandler, context, exception, MainActivity.class, null, ErrorActivity.ErrorInfo.make(UserAction.REQUESTED_STREAM, NewPipe.getNameOfService(serviceId), url, errorId));
-                    }
-                }
-            });
-            stopSelf();
-        }
-
-        /*package-private*/ void onReCaptchaException() {
-            Toast.makeText(context, R.string.recaptcha_request_toast, Toast.LENGTH_LONG).show();
-            // Starting ReCaptcha Challenge Activity
-            Intent intent = new Intent(context, ReCaptchaActivity.class);
-            intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
-            context.startActivity(intent);
-            stopSelf();
-        }
-    }
-
 }

app/src/main/java/org/schabi/newpipe/player/PopupVideoPlayerActivity.java

@@ -1,9 +1,12 @@
 package org.schabi.newpipe.player;
 
 import android.content.Intent;
+import android.view.MenuItem;
 
 import org.schabi.newpipe.R;
 
+import static org.schabi.newpipe.player.PopupVideoPlayer.ACTION_CLOSE;
+
 public final class PopupVideoPlayerActivity extends ServicePlayerActivity {
 
     private static final String TAG = "PopupVideoPlayerActivity";
@@ -36,4 +39,25 @@ public final class PopupVideoPlayerActivity extends ServicePlayerActivity {
             ((PopupVideoPlayer.VideoPlayerImpl) player).removeActivityListener(this);
         }
     }
+
+    @Override
+    public int getPlayerOptionMenuResource() {
+        return R.menu.menu_play_queue_popup;
+    }
+
+    @Override
+    public boolean onPlayerOptionSelected(MenuItem item) {
+        if (item.getItemId() == R.id.action_switch_background) {
+            this.player.setRecovery();
+            getApplicationContext().sendBroadcast(getPlayerShutdownIntent());
+            getApplicationContext().startService(getSwitchIntent(BackgroundPlayer.class));
+            return true;
+        }
+        return false;
+    }
+
+    @Override
+    public Intent getPlayerShutdownIntent() {
+        return new Intent(ACTION_CLOSE);
+    }
 }

app/src/main/java/org/schabi/newpipe/player/ServicePlayerActivity.java

@@ -28,6 +28,7 @@ import com.google.android.exoplayer2.Player;
 
 import org.schabi.newpipe.R;
 import org.schabi.newpipe.extractor.stream.StreamInfo;
+import org.schabi.newpipe.fragments.OnScrollBelowItemsListener;
 import org.schabi.newpipe.player.event.PlayerEventListener;
 import org.schabi.newpipe.playlist.PlayQueueItem;
 import org.schabi.newpipe.playlist.PlayQueueItemBuilder;
@@ -57,6 +58,8 @@ public abstract class ServicePlayerActivity extends AppCompatActivity
     private static final int PLAYBACK_SPEED_POPUP_MENU_GROUP_ID = 61;
     private static final int PLAYBACK_PITCH_POPUP_MENU_GROUP_ID = 97;
 
+    private static final int SMOOTH_SCROLL_MAXIMUM_DISTANCE = 80;
+
     private View rootView;
 
     private RecyclerView itemsList;
@@ -97,6 +100,11 @@ public abstract class ServicePlayerActivity extends AppCompatActivity
 
     public abstract void stopPlayerListener();
 
+    public abstract int getPlayerOptionMenuResource();
+
+    public abstract boolean onPlayerOptionSelected(MenuItem item);
+
+    public abstract Intent getPlayerShutdownIntent();
     ////////////////////////////////////////////////////////////////////////////
     // Activity Lifecycle
     ////////////////////////////////////////////////////////////////////////////
@@ -131,6 +139,7 @@ public abstract class ServicePlayerActivity extends AppCompatActivity
     @Override
     public boolean onCreateOptionsMenu(Menu menu) {
         getMenuInflater().inflate(R.menu.menu_play_queue, menu);
+        getMenuInflater().inflate(getPlayerOptionMenuResource(), menu);
         return true;
     }
 
@@ -150,8 +159,13 @@ public abstract class ServicePlayerActivity extends AppCompatActivity
             case R.id.action_system_audio:
                 startActivity(new Intent(Settings.ACTION_SOUND_SETTINGS));
                 return true;
+            case R.id.action_switch_main:
+                this.player.setRecovery();
+                getApplicationContext().sendBroadcast(getPlayerShutdownIntent());
+                getApplicationContext().startActivity(getSwitchIntent(MainVideoPlayer.class));
+                return true;
         }
-        return super.onOptionsItemSelected(item);
+        return onPlayerOptionSelected(item) || super.onOptionsItemSelected(item);
     }
 
     @Override
@@ -160,6 +174,17 @@ public abstract class ServicePlayerActivity extends AppCompatActivity
         unbind();
     }
 
+    protected Intent getSwitchIntent(final Class clazz) {
+        return NavigationHelper.getPlayerIntent(
+                getApplicationContext(),
+                clazz,
+                this.player.getPlayQueue(),
+                this.player.getRepeatMode(),
+                this.player.getPlaybackSpeed(),
+                this.player.getPlaybackPitch(),
+                null
+        ).addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+    }
     ////////////////////////////////////////////////////////////////////////////
     // Service Connection
     ////////////////////////////////////////////////////////////////////////////
@@ -225,6 +250,8 @@ public abstract class ServicePlayerActivity extends AppCompatActivity
         itemsList.setAdapter(player.getPlayQueueAdapter());
         itemsList.setClickable(true);
         itemsList.setLongClickable(true);
+        itemsList.clearOnScrollListeners();
+        itemsList.addOnScrollListener(getQueueScrollListener());
 
         itemTouchHelper = new ItemTouchHelper(getItemTouchCallback());
         itemTouchHelper.attachToRecyclerView(itemsList);
@@ -283,12 +310,11 @@ public abstract class ServicePlayerActivity extends AppCompatActivity
             final float playbackSpeed = BasePlayer.PLAYBACK_SPEEDS[i];
             final String formattedSpeed = formatSpeed(playbackSpeed);
             final MenuItem item = playbackSpeedPopupMenu.getMenu().add(PLAYBACK_SPEED_POPUP_MENU_GROUP_ID, i, Menu.NONE, formattedSpeed);
-            item.setOnMenuItemClickListener(new MenuItem.OnMenuItemClickListener() {
-                @Override
-                public boolean onMenuItemClick(MenuItem menuItem) {
-                    player.setPlaybackSpeed(playbackSpeed);
-                    return true;
-                }
+            item.setOnMenuItemClickListener(menuItem -> {
+                if (player == null) return false;
+
+                player.setPlaybackSpeed(playbackSpeed);
+                return true;
             });
         }
     }
@@ -301,12 +327,11 @@ public abstract class ServicePlayerActivity extends AppCompatActivity
             final float playbackPitch = BasePlayer.PLAYBACK_PITCHES[i];
             final String formattedPitch = formatPitch(playbackPitch);
             final MenuItem item = playbackPitchPopupMenu.getMenu().add(PLAYBACK_PITCH_POPUP_MENU_GROUP_ID, i, Menu.NONE, formattedPitch);
-            item.setOnMenuItemClickListener(new MenuItem.OnMenuItemClickListener() {
-                @Override
-                public boolean onMenuItemClick(MenuItem menuItem) {
-                    player.setPlaybackPitch(playbackPitch);
-                    return true;
-                }
+            item.setOnMenuItemClickListener(menuItem -> {
+                if (player == null) return false;
+
+                player.setPlaybackPitch(playbackPitch);
+                return true;
             });
         }
     }
@@ -314,22 +339,18 @@ public abstract class ServicePlayerActivity extends AppCompatActivity
     private void buildItemPopupMenu(final PlayQueueItem item, final View view) {
         final PopupMenu menu = new PopupMenu(this, view);
         final MenuItem remove = menu.getMenu().add(RECYCLER_ITEM_POPUP_MENU_GROUP_ID, 0, Menu.NONE, R.string.play_queue_remove);
-        remove.setOnMenuItemClickListener(new MenuItem.OnMenuItemClickListener() {
-            @Override
-            public boolean onMenuItemClick(MenuItem menuItem) {
-                final int index = player.getPlayQueue().indexOf(item);
-                if (index != -1) player.getPlayQueue().remove(index);
-                return true;
-            }
+        remove.setOnMenuItemClickListener(menuItem -> {
+            if (player == null) return false;
+
+            final int index = player.getPlayQueue().indexOf(item);
+            if (index != -1) player.getPlayQueue().remove(index);
+            return true;
         });
 
         final MenuItem detail = menu.getMenu().add(RECYCLER_ITEM_POPUP_MENU_GROUP_ID, 1, Menu.NONE, R.string.play_queue_stream_detail);
-        detail.setOnMenuItemClickListener(new MenuItem.OnMenuItemClickListener() {
-            @Override
-            public boolean onMenuItemClick(MenuItem menuItem) {
-                onOpenDetail(item.getServiceId(), item.getUrl(), item.getTitle());
-                return true;
-            }
+        detail.setOnMenuItemClickListener(menuItem -> {
+            onOpenDetail(item.getServiceId(), item.getUrl(), item.getTitle());
+            return true;
         });
 
         menu.show();
@@ -339,6 +360,19 @@ public abstract class ServicePlayerActivity extends AppCompatActivity
     // Component Helpers
     ////////////////////////////////////////////////////////////////////////////
 
+    private OnScrollBelowItemsListener getQueueScrollListener() {
+        return new OnScrollBelowItemsListener() {
+            @Override
+            public void onScrolledDown(RecyclerView recyclerView) {
+                if (player != null && player.getPlayQueue() != null && !player.getPlayQueue().isComplete()) {
+                    player.getPlayQueue().fetch();
+                } else if (itemsList != null) {
+                    itemsList.clearOnScrollListeners();
+                }
+            }
+        };
+    }
+
     private ItemTouchHelper.SimpleCallback getItemTouchCallback() {
         return new ItemTouchHelper.SimpleCallback(ItemTouchHelper.UP | ItemTouchHelper.DOWN, 0) {
             @Override
@@ -349,7 +383,7 @@ public abstract class ServicePlayerActivity extends AppCompatActivity
 
                 final int sourceIndex = source.getLayoutPosition();
                 final int targetIndex = target.getLayoutPosition();
-                player.getPlayQueue().move(sourceIndex, targetIndex);
+                if (player != null) player.getPlayQueue().move(sourceIndex, targetIndex);
                 return true;
             }
 
@@ -372,11 +406,13 @@ public abstract class ServicePlayerActivity extends AppCompatActivity
         return new PlayQueueItemBuilder.OnSelectedListener() {
             @Override
             public void selected(PlayQueueItem item, View view) {
-                player.onSelected(item);
+                if (player != null) player.onSelected(item);
             }
 
             @Override
             public void held(PlayQueueItem item, View view) {
+                if (player == null) return;
+
                 final int index = player.getPlayQueue().indexOf(item);
                 if (index != -1) buildItemPopupMenu(item, view);
             }
@@ -393,7 +429,23 @@ public abstract class ServicePlayerActivity extends AppCompatActivity
     }
 
     private void scrollToSelected() {
-        itemsList.smoothScrollToPosition(player.getPlayQueue().getIndex());
+        if (player == null) return;
+
+        final int currentPlayingIndex = player.getPlayQueue().getIndex();
+        final int currentVisibleIndex;
+        if (itemsList.getLayoutManager() instanceof LinearLayoutManager) {
+            final LinearLayoutManager layout = ((LinearLayoutManager) itemsList.getLayoutManager());
+            currentVisibleIndex = layout.findFirstVisibleItemPosition();
+        } else {
+            currentVisibleIndex = 0;
+        }
+
+        final int distance = Math.abs(currentPlayingIndex - currentVisibleIndex);
+        if (distance < SMOOTH_SCROLL_MAXIMUM_DISTANCE) {
+            itemsList.smoothScrollToPosition(currentPlayingIndex);
+        } else {
+            itemsList.scrollToPosition(currentPlayingIndex);
+        }
     }
 
     ////////////////////////////////////////////////////////////////////////////
@@ -402,6 +454,8 @@ public abstract class ServicePlayerActivity extends AppCompatActivity
 
     @Override
     public void onClick(View view) {
+        if (player == null) return;
+
         if (view.getId() == repeatButton.getId()) {
             player.onRepeatClicked();
 
@@ -450,7 +504,7 @@ public abstract class ServicePlayerActivity extends AppCompatActivity
 
     @Override
     public void onStopTrackingTouch(SeekBar seekBar) {
-        player.simpleExoPlayer.seekTo(seekBar.getProgress());
+        if (player != null) player.simpleExoPlayer.seekTo(seekBar.getProgress());
         seekDisplay.setVisibility(View.GONE);
         seeking = false;
     }
@@ -485,7 +539,7 @@ public abstract class ServicePlayerActivity extends AppCompatActivity
     @Override
     public void onMetadataUpdate(StreamInfo info) {
         if (info != null) {
-            metadataTitle.setText(info.name);
+            metadataTitle.setText(info.getName());
             metadataArtist.setText(info.uploader_name);
             scrollToSelected();
         }

app/src/main/java/org/schabi/newpipe/player/VideoPlayer.java

@@ -39,7 +39,6 @@ import android.view.Menu;
 import android.view.MenuItem;
 import android.view.SurfaceView;
 import android.view.View;
-import android.widget.ImageButton;
 import android.widget.ImageView;
 import android.widget.PopupMenu;
 import android.widget.ProgressBar;
@@ -75,16 +74,16 @@ import static org.schabi.newpipe.util.AnimationUtils.animateView;
  * @author mauriciocolli
  */
 @SuppressWarnings({"WeakerAccess", "unused"})
-public abstract class VideoPlayer extends BasePlayer implements SimpleExoPlayer.VideoListener, SeekBar.OnSeekBarChangeListener, View.OnClickListener, Player.EventListener, PopupMenu.OnMenuItemClickListener, PopupMenu.OnDismissListener {
+public abstract class VideoPlayer extends BasePlayer
+        implements SimpleExoPlayer.VideoListener,
+        SeekBar.OnSeekBarChangeListener,
+        View.OnClickListener,
+        Player.EventListener,
+        PopupMenu.OnMenuItemClickListener,
+        PopupMenu.OnDismissListener {
     public static final boolean DEBUG = BasePlayer.DEBUG;
     public final String TAG;
 
-    /*//////////////////////////////////////////////////////////////////////////
-    // Intent
-    //////////////////////////////////////////////////////////////////////////*/
-
-    public static final String STARTED_FROM_NEWPIPE = "started_from_newpipe";
-
     /*//////////////////////////////////////////////////////////////////////////
     // Player
     //////////////////////////////////////////////////////////////////////////*/
@@ -96,7 +95,6 @@ public abstract class VideoPlayer extends BasePlayer implements SimpleExoPlayer.
 
     protected String playbackQuality;
 
-    private boolean startedFromNewPipe = true;
     protected boolean wasPlaying = false;
 
     /*//////////////////////////////////////////////////////////////////////////
@@ -124,12 +122,11 @@ public abstract class VideoPlayer extends BasePlayer implements SimpleExoPlayer.
 
     private View topControlsRoot;
     private TextView qualityTextView;
-    private ImageButton fullScreenButton;
 
     private ValueAnimator controlViewAnimator;
     private Handler controlsVisibilityHandler = new Handler();
 
-    private boolean isSomePopupMenuVisible = false;
+    boolean isSomePopupMenuVisible = false;
     private int qualityPopupMenuGroupId = 69;
     private PopupMenu qualityPopupMenu;
 
@@ -166,7 +163,6 @@ public abstract class VideoPlayer extends BasePlayer implements SimpleExoPlayer.
         this.bottomControlsRoot = rootView.findViewById(R.id.bottomControls);
         this.topControlsRoot = rootView.findViewById(R.id.topControls);
         this.qualityTextView = rootView.findViewById(R.id.qualityTextView);
-        this.fullScreenButton = rootView.findViewById(R.id.fullScreenButton);
 
         //this.aspectRatioFrameLayout.setAspectRatio(16.0f / 9.0f);
 
@@ -186,7 +182,6 @@ public abstract class VideoPlayer extends BasePlayer implements SimpleExoPlayer.
         super.initListeners();
         playbackSeekBar.setOnSeekBarChangeListener(this);
         playbackSpeedTextView.setOnClickListener(this);
-        fullScreenButton.setOnClickListener(this);
         qualityTextView.setOnClickListener(this);
     }
 
@@ -272,24 +267,25 @@ public abstract class VideoPlayer extends BasePlayer implements SimpleExoPlayer.
     }
 
     @Override
+    @Nullable
     public MediaSource sourceOf(final PlayQueueItem item, final StreamInfo info) {
         final List<VideoStream> videos = ListHelper.getSortedStreamVideosList(context, info.video_streams, info.video_only_streams, false);
 
-        final VideoStream video;
+        final int index;
         if (playbackQuality == null) {
-            final int index = getDefaultResolutionIndex(videos);
-            video = videos.get(index);
+            index = getDefaultResolutionIndex(videos);
         } else {
-            final int index = getOverrideResolutionIndex(videos, getPlaybackQuality());
-            video = videos.get(index);
+            index = getOverrideResolutionIndex(videos, getPlaybackQuality());
         }
+        if (index < 0 || index >= videos.size()) return null;
+        final VideoStream video = videos.get(index);
 
-        final MediaSource streamSource = buildMediaSource(video.url, MediaFormat.getSuffixById(video.format));
+        final MediaSource streamSource = buildMediaSource(video.getUrl(), MediaFormat.getSuffixById(video.format));
         final AudioStream audio = ListHelper.getHighestQualityAudio(info.audio_streams);
         if (!video.isVideoOnly || audio == null) return streamSource;
 
         // Merge with audio stream in case if video does not contain audio
-        final MediaSource audioSource = buildMediaSource(audio.url, MediaFormat.getSuffixById(audio.format));
+        final MediaSource audioSource = buildMediaSource(audio.getUrl(), MediaFormat.getSuffixById(audio.format));
         return new MergingMediaSource(streamSource, audioSource);
     }
 
@@ -453,9 +449,7 @@ public abstract class VideoPlayer extends BasePlayer implements SimpleExoPlayer.
     @Override
     public void onClick(View v) {
         if (DEBUG) Log.d(TAG, "onClick() called with: v = [" + v + "]");
-        if (v.getId() == fullScreenButton.getId()) {
-            onFullScreenButtonClicked();
-        } else if (v.getId() == qualityTextView.getId()) {
+        if (v.getId() == qualityTextView.getId()) {
             onQualitySelectorClicked();
         } else if (v.getId() == playbackSpeedTextView.getId()) {
             onPlaybackSpeedClicked();
@@ -693,14 +687,6 @@ public abstract class VideoPlayer extends BasePlayer implements SimpleExoPlayer.
         return availableStreams.get(selectedStreamIndex);
     }
 
-    public boolean isStartedFromNewPipe() {
-        return startedFromNewPipe;
-    }
-
-    public void setStartedFromNewPipe(boolean startedFromNewPipe) {
-        this.startedFromNewPipe = startedFromNewPipe;
-    }
-
     public Handler getControlsVisibilityHandler() {
         return controlsVisibilityHandler;
     }
@@ -753,14 +739,14 @@ public abstract class VideoPlayer extends BasePlayer implements SimpleExoPlayer.
         return qualityTextView;
     }
 
-    public ImageButton getFullScreenButton() {
-        return fullScreenButton;
-    }
-
     public PopupMenu getQualityPopupMenu() {
         return qualityPopupMenu;
     }
 
+    public PopupMenu getPlaybackSpeedPopupMenu() {
+        return playbackSpeedPopupMenu;
+    }
+
     public View getSurfaceForeground() {
         return surfaceForeground;
     }

app/src/main/java/org/schabi/newpipe/player/helper/PlayerHelper.java

@@ -12,6 +12,8 @@ import java.text.NumberFormat;
 import java.util.Formatter;
 import java.util.Locale;
 
+import javax.annotation.Nonnull;
+
 public class PlayerHelper {
     private PlayerHelper() {}
 
@@ -56,6 +58,10 @@ public class PlayerHelper {
         return isUsingOldPlayer(context, false);
     }
 
+    public static boolean isRememberingPopupDimensions(@Nonnull final Context context) {
+        return isRememberingPopupDimensions(context, true);
+    }
+
     public static long getPreferredCacheSize(@NonNull final Context context) {
         return 64 * 1024 * 1024L;
     }
@@ -83,6 +89,15 @@ public class PlayerHelper {
     public static boolean isUsingDSP(@NonNull final Context context) {
         return true;
     }
+
+    public static int getShutdownFlingVelocity(@Nonnull final Context context) {
+        return 10000;
+    }
+
+    public static int getTossFlingVelocity(@Nonnull final Context context) {
+        return 2500;
+    }
+
     ////////////////////////////////////////////////////////////////////////////
     // Private helpers
     ////////////////////////////////////////////////////////////////////////////
@@ -103,4 +118,8 @@ public class PlayerHelper {
     private static boolean isUsingOldPlayer(@NonNull final Context context, final boolean b) {
         return getPreferences(context).getBoolean(context.getString(R.string.use_old_player_key), b);
     }
+
+    private static boolean isRememberingPopupDimensions(@Nonnull final Context context, final boolean b) {
+        return getPreferences(context).getBoolean(context.getString(R.string.popup_remember_size_pos_key), b);
+    }
 }

app/src/main/java/org/schabi/newpipe/player/playback/MediaSourceManager.java

@@ -29,7 +29,7 @@ import io.reactivex.subjects.PublishSubject;
 public class MediaSourceManager {
     private final String TAG = "MediaSourceManager@" + Integer.toHexString(hashCode());
     // One-side rolling window size for default loading
-    // Effectively loads windowSize * 2 + 1 streams, must be greater than 0
+    // Effectively loads windowSize * 2 + 1 streams per call to load, must be greater than 0
     private final int windowSize;
     private final PlaybackListener playbackListener;
     private final PlayQueue playQueue;
@@ -38,7 +38,7 @@ public class MediaSourceManager {
     // The higher it is, the less loading occurs during rapid noncritical timeline changes
     // Not recommended to go below 100ms
     private final long loadDebounceMillis;
-    private final PublishSubject<Long> loadSignal;
+    private final PublishSubject<Long> debouncedLoadSignal;
     private final Disposable debouncedLoader;
 
     private final DeferredMediaSource.Callback sourceBuilder;
@@ -52,7 +52,7 @@ public class MediaSourceManager {
 
     public MediaSourceManager(@NonNull final PlaybackListener listener,
                               @NonNull final PlayQueue playQueue) {
-        this(listener, playQueue, 1, 1000L);
+        this(listener, playQueue, 1, 400L);
     }
 
     private MediaSourceManager(@NonNull final PlaybackListener listener,
@@ -69,7 +69,7 @@ public class MediaSourceManager {
         this.loadDebounceMillis = loadDebounceMillis;
 
         this.syncReactor = new SerialDisposable();
-        this.loadSignal = PublishSubject.create();
+        this.debouncedLoadSignal = PublishSubject.create();
         this.debouncedLoader = getDebouncedLoader();
 
         this.sourceBuilder = getSourceBuilder();
@@ -101,7 +101,7 @@ public class MediaSourceManager {
      * Dispose the manager and releases all message buses and loaders.
      * */
     public void dispose() {
-        if (loadSignal != null) loadSignal.onComplete();
+        if (debouncedLoadSignal != null) debouncedLoadSignal.onComplete();
         if (debouncedLoader != null) debouncedLoader.dispose();
         if (playQueueReactor != null) playQueueReactor.cancel();
         if (syncReactor != null) syncReactor.dispose();
@@ -118,7 +118,7 @@ public class MediaSourceManager {
      * Unblocks the player once the item at the current index is loaded.
      * */
     public void load() {
-        loadSignal.onNext(System.currentTimeMillis());
+        loadDebounced();
     }
 
     /**
@@ -157,12 +157,12 @@ public class MediaSourceManager {
     }
 
     private void onPlayQueueChanged(final PlayQueueEvent event) {
-        if (playQueue.isEmpty()) {
+        if (playQueue.isEmpty() && playQueue.isComplete()) {
             playbackListener.shutdown();
             return;
         }
 
-        // why no pattern matching in Java =(
+        // Event specific action
         switch (event.type()) {
             case INIT:
             case REORDER:
@@ -172,37 +172,34 @@ public class MediaSourceManager {
             case APPEND:
                 populateSources();
                 break;
-            case SELECT:
-                sync();
-                break;
             case REMOVE:
                 final RemoveEvent removeEvent = (RemoveEvent) event;
                 remove(removeEvent.getRemoveIndex());
-                // Sync only when the currently playing is removed
-                if (removeEvent.getQueueIndex() == removeEvent.getRemoveIndex()) sync();
                 break;
             case MOVE:
                 final MoveEvent moveEvent = (MoveEvent) event;
                 move(moveEvent.getFromIndex(), moveEvent.getToIndex());
                 break;
+            case SELECT:
             case RECOVERY:
             default:
                 break;
         }
 
+        // Loading and Syncing
         switch (event.type()) {
             case INIT:
             case REORDER:
             case ERROR:
-            case APPEND:
-                loadInternal(); // low frequency, critical events
+                loadImmediate(); // low frequency, critical events
                 break;
+            case APPEND:
             case REMOVE:
             case SELECT:
             case MOVE:
             case RECOVERY:
             default:
-                load(); // high frequency or noncritical events
+                loadDebounced(); // high frequency or noncritical events
                 break;
         }
 
@@ -262,7 +259,11 @@ public class MediaSourceManager {
         syncReactor.set(currentItem.getStream().subscribe(syncPlayback, onError));
     }
 
-    private void loadInternal() {
+    private void loadDebounced() {
+        debouncedLoadSignal.onNext(System.currentTimeMillis());
+    }
+
+    private void loadImmediate() {
         // The current item has higher priority
         final int currentIndex = playQueue.getIndex();
         final PlayQueueItem currentItem = playQueue.getItem(currentIndex);
@@ -290,7 +291,9 @@ public class MediaSourceManager {
 
         final DeferredMediaSource mediaSource = (DeferredMediaSource) sources.getMediaSource(playQueue.indexOf(item));
         if (mediaSource.state() == DeferredMediaSource.STATE_PREPARED) mediaSource.load();
-        if (tryUnblock()) sync();
+
+        tryUnblock();
+        if (!isBlocked) sync();
     }
 
     private void resetSources() {
@@ -307,13 +310,13 @@ public class MediaSourceManager {
     }
 
     private Disposable getDebouncedLoader() {
-        return loadSignal
+        return debouncedLoadSignal
                 .debounce(loadDebounceMillis, TimeUnit.MILLISECONDS)
                 .observeOn(AndroidSchedulers.mainThread())
                 .subscribe(new Consumer<Long>() {
             @Override
             public void accept(Long timestamp) throws Exception {
-                loadInternal();
+                loadImmediate();
             }
         });
     }

app/src/main/java/org/schabi/newpipe/player/playback/PlaybackListener.java

@@ -43,6 +43,7 @@ public interface PlaybackListener {
      *
      * May be called at any time.
      * */
+    @Nullable
     MediaSource sourceOf(final PlayQueueItem item, final StreamInfo info);
 
     /**

app/src/main/java/org/schabi/newpipe/playlist/AbstractInfoPlayQueue.java

@@ -0,0 +1,132 @@
+package org.schabi.newpipe.playlist;
+
+import android.util.Log;
+
+import org.schabi.newpipe.extractor.InfoItem;
+import org.schabi.newpipe.extractor.ListExtractor;
+import org.schabi.newpipe.extractor.ListInfo;
+import org.schabi.newpipe.extractor.stream.StreamInfoItem;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+import io.reactivex.SingleObserver;
+import io.reactivex.annotations.NonNull;
+import io.reactivex.disposables.Disposable;
+
+abstract class AbstractInfoPlayQueue<T extends ListInfo, U extends InfoItem> extends PlayQueue {
+    boolean isInitial;
+    boolean isComplete;
+
+    int serviceId;
+    String baseUrl;
+    String nextUrl;
+
+    transient Disposable fetchReactor;
+
+    AbstractInfoPlayQueue(final U item) {
+        this(item.getServiceId(), item.getUrl(), null, Collections.<InfoItem>emptyList(), 0);
+    }
+
+    AbstractInfoPlayQueue(final int serviceId,
+                          final String url,
+                          final String nextPageUrl,
+                          final List<InfoItem> streams,
+                          final int index) {
+        super(index, extractListItems(streams));
+
+        this.baseUrl = url;
+        this.nextUrl = nextPageUrl;
+        this.serviceId = serviceId;
+
+        this.isInitial = streams.isEmpty();
+        this.isComplete = !isInitial && (nextPageUrl == null || nextPageUrl.isEmpty());
+    }
+
+    abstract protected String getTag();
+
+    @Override
+    public boolean isComplete() {
+        return isComplete;
+    }
+
+    SingleObserver<T> getHeadListObserver() {
+        return new SingleObserver<T>() {
+            @Override
+            public void onSubscribe(@NonNull Disposable d) {
+                if (isComplete || !isInitial || (fetchReactor != null && !fetchReactor.isDisposed())) {
+                    d.dispose();
+                } else {
+                    fetchReactor = d;
+                }
+            }
+
+            @Override
+            public void onSuccess(@NonNull T result) {
+                isInitial = false;
+                if (!result.has_more_streams) isComplete = true;
+                nextUrl = result.next_streams_url;
+
+                append(extractListItems(result.related_streams));
+
+                fetchReactor.dispose();
+                fetchReactor = null;
+            }
+
+            @Override
+            public void onError(@NonNull Throwable e) {
+                Log.e(getTag(), "Error fetching more playlist, marking playlist as complete.", e);
+                isComplete = true;
+                append(); // Notify change
+            }
+        };
+    }
+
+    SingleObserver<ListExtractor.NextItemsResult> getNextItemsObserver() {
+        return new SingleObserver<ListExtractor.NextItemsResult>() {
+            @Override
+            public void onSubscribe(@NonNull Disposable d) {
+                if (isComplete || isInitial || (fetchReactor != null && !fetchReactor.isDisposed())) {
+                    d.dispose();
+                } else {
+                    fetchReactor = d;
+                }
+            }
+
+            @Override
+            public void onSuccess(@NonNull ListExtractor.NextItemsResult result) {
+                if (!result.hasMoreStreams()) isComplete = true;
+                nextUrl = result.nextItemsUrl;
+
+                append(extractListItems(result.nextItemsList));
+
+                fetchReactor.dispose();
+                fetchReactor = null;
+            }
+
+            @Override
+            public void onError(@NonNull Throwable e) {
+                Log.e(getTag(), "Error fetching more playlist, marking playlist as complete.", e);
+                isComplete = true;
+                append(); // Notify change
+            }
+        };
+    }
+
+    @Override
+    public void dispose() {
+        super.dispose();
+        if (fetchReactor != null) fetchReactor.dispose();
+    }
+
+    private static List<PlayQueueItem> extractListItems(final List<InfoItem> infos) {
+        List<PlayQueueItem> result = new ArrayList<>();
+        for (final InfoItem stream : infos) {
+            if (stream instanceof StreamInfoItem) {
+                result.add(new PlayQueueItem((StreamInfoItem) stream));
+            }
+        }
+        return result;
+    }
+}

app/src/main/java/org/schabi/newpipe/playlist/ChannelPlayQueue.java

@@ -0,0 +1,49 @@
+package org.schabi.newpipe.playlist;
+
+import org.schabi.newpipe.extractor.InfoItem;
+import org.schabi.newpipe.extractor.channel.ChannelInfo;
+import org.schabi.newpipe.extractor.channel.ChannelInfoItem;
+import org.schabi.newpipe.util.ExtractorHelper;
+
+import java.util.List;
+
+import io.reactivex.android.schedulers.AndroidSchedulers;
+import io.reactivex.schedulers.Schedulers;
+
+public final class ChannelPlayQueue extends AbstractInfoPlayQueue<ChannelInfo, ChannelInfoItem> {
+    public ChannelPlayQueue(final ChannelInfoItem item) {
+        super(item);
+    }
+
+    public ChannelPlayQueue(final ChannelInfo info) {
+        this(info.getServiceId(), info.getUrl(), info.getNextStreamsUrl(), info.getRelatedStreams(), 0);
+    }
+
+    public ChannelPlayQueue(final int serviceId,
+                            final String url,
+                            final String nextPageUrl,
+                            final List<InfoItem> streams,
+                            final int index) {
+        super(serviceId, url, nextPageUrl, streams, index);
+    }
+
+    @Override
+    protected String getTag() {
+        return "ChannelPlayQueue@" + Integer.toHexString(hashCode());
+    }
+
+    @Override
+    public void fetch() {
+        if (this.isInitial) {
+            ExtractorHelper.getChannelInfo(this.serviceId, this.baseUrl, false)
+                    .subscribeOn(Schedulers.io())
+                    .observeOn(AndroidSchedulers.mainThread())
+                    .subscribe(getHeadListObserver());
+        } else {
+            ExtractorHelper.getMoreChannelItems(this.serviceId, this.baseUrl, this.nextUrl)
+                    .subscribeOn(Schedulers.io())
+                    .observeOn(AndroidSchedulers.mainThread())
+                    .subscribe(getNextItemsObserver());
+        }
+    }
+}

app/src/main/java/org/schabi/newpipe/playlist/ExternalPlayQueue.java

@@ -1,104 +0,0 @@
-package org.schabi.newpipe.playlist;
-
-import android.util.Log;
-
-import org.schabi.newpipe.extractor.InfoItem;
-import org.schabi.newpipe.extractor.ListExtractor;
-import org.schabi.newpipe.extractor.stream.StreamInfoItem;
-import org.schabi.newpipe.util.ExtractorHelper;
-
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.List;
-
-import io.reactivex.SingleObserver;
-import io.reactivex.android.schedulers.AndroidSchedulers;
-import io.reactivex.annotations.NonNull;
-import io.reactivex.disposables.Disposable;
-import io.reactivex.schedulers.Schedulers;
-
-public final class ExternalPlayQueue extends PlayQueue {
-    private final String TAG = "ExternalPlayQueue@" + Integer.toHexString(hashCode());
-
-    private boolean isComplete;
-
-    private int serviceId;
-    private String baseUrl;
-    private String nextUrl;
-
-    private transient Disposable fetchReactor;
-
-    public ExternalPlayQueue(final int serviceId,
-                             final String url,
-                             final String nextPageUrl,
-                             final List<InfoItem> streams,
-                             final int index) {
-        super(index, extractPlaylistItems(streams));
-
-        this.baseUrl = url;
-        this.nextUrl = nextPageUrl;
-        this.serviceId = serviceId;
-
-        this.isComplete = nextPageUrl == null || nextPageUrl.isEmpty();
-    }
-
-    @Override
-    public boolean isComplete() {
-        return isComplete;
-    }
-
-    @Override
-    public void fetch() {
-       ExtractorHelper.getMorePlaylistItems(this.serviceId, this.baseUrl, this.nextUrl)
-                .subscribeOn(Schedulers.io())
-                .observeOn(AndroidSchedulers.mainThread())
-                .subscribe(getPlaylistObserver());
-    }
-
-    private SingleObserver<ListExtractor.NextItemsResult> getPlaylistObserver() {
-        return new SingleObserver<ListExtractor.NextItemsResult>() {
-            @Override
-            public void onSubscribe(@NonNull Disposable d) {
-                if (isComplete || (fetchReactor != null && !fetchReactor.isDisposed())) {
-                    d.dispose();
-                } else {
-                    fetchReactor = d;
-                }
-            }
-
-            @Override
-            public void onSuccess(@NonNull ListExtractor.NextItemsResult result) {
-                if (!result.hasMoreStreams()) isComplete = true;
-                nextUrl = result.nextItemsUrl;
-
-                append(extractPlaylistItems(result.nextItemsList));
-
-                fetchReactor.dispose();
-                fetchReactor = null;
-            }
-
-            @Override
-            public void onError(@NonNull Throwable e) {
-                Log.e(TAG, "Error fetching more playlist, marking playlist as complete.", e);
-                isComplete = true;
-                append(); // Notify change
-            }
-        };
-    }
-
-    @Override
-    public void dispose() {
-        super.dispose();
-        if (fetchReactor != null) fetchReactor.dispose();
-    }
-
-    private static List<PlayQueueItem> extractPlaylistItems(final List<InfoItem> infos) {
-        List<PlayQueueItem> result = new ArrayList<>();
-        for (final InfoItem stream : infos) {
-            if (stream instanceof StreamInfoItem) {
-                result.add(new PlayQueueItem((StreamInfoItem) stream));
-            }
-        }
-        return result;
-    }
-}

app/src/main/java/org/schabi/newpipe/playlist/PlayQueue.java

@@ -123,7 +123,7 @@ public abstract class PlayQueue implements Serializable {
      * May throw {@link IndexOutOfBoundsException}.
      * */
     public PlayQueueItem getItem(int index) {
-        if (index >= streams.size() || streams.get(index) == null) return null;
+        if (index < 0 || index >= streams.size() || streams.get(index) == null) return null;
         return streams.get(index);
     }
 
@@ -279,7 +279,7 @@ public abstract class PlayQueue implements Serializable {
             queueIndex.set(currentIndex % (size - 1));
 
         } else if (currentIndex == removeIndex && currentIndex == size - 1){
-            queueIndex.set(removeIndex - 1);
+            queueIndex.set(0);
         }
 
         if (backup != null) {

app/src/main/java/org/schabi/newpipe/playlist/PlayQueueItem.java

@@ -30,12 +30,12 @@ public class PlayQueueItem implements Serializable {
     private transient Single<StreamInfo> stream;
 
     PlayQueueItem(@NonNull final StreamInfo info) {
-        this(info.name, info.url, info.service_id, info.duration, info.thumbnail_url, info.uploader_name);
+        this(info.getName(), info.getUrl(), info.getServiceId(), info.duration, info.thumbnail_url, info.uploader_name);
         this.stream = Single.just(info);
     }
 
     PlayQueueItem(@NonNull final StreamInfoItem item) {
-        this(item.name, item.url, item.service_id, item.duration, item.thumbnail_url, item.uploader_name);
+        this(item.getName(), item.getUrl(), item.getServiceId(), item.duration, item.thumbnail_url, item.uploader_name);
     }
 
     private PlayQueueItem(final String name, final String url, final int serviceId,

app/src/main/java/org/schabi/newpipe/playlist/PlayQueueItemBuilder.java

@@ -107,6 +107,8 @@ public class PlayQueueItemBuilder {
                 .bitmapConfig(Bitmap.Config.RGB_565) // Users won't be able to see much anyways
                 .preProcessor(bitmapProcessor)
                 .imageScaleType(ImageScaleType.EXACTLY)
+                .cacheInMemory(true)
+                .cacheOnDisk(true)
                 .build();
     }
 }

app/src/main/java/org/schabi/newpipe/playlist/PlaylistPlayQueue.java

@@ -0,0 +1,49 @@
+package org.schabi.newpipe.playlist;
+
+import org.schabi.newpipe.extractor.InfoItem;
+import org.schabi.newpipe.extractor.playlist.PlaylistInfo;
+import org.schabi.newpipe.extractor.playlist.PlaylistInfoItem;
+import org.schabi.newpipe.util.ExtractorHelper;
+
+import java.util.List;
+
+import io.reactivex.android.schedulers.AndroidSchedulers;
+import io.reactivex.schedulers.Schedulers;
+
+public final class PlaylistPlayQueue extends AbstractInfoPlayQueue<PlaylistInfo, PlaylistInfoItem> {
+    public PlaylistPlayQueue(final PlaylistInfoItem item) {
+        super(item);
+    }
+
+    public PlaylistPlayQueue(final PlaylistInfo info) {
+        this(info.getServiceId(), info.getUrl(), info.getNextStreamsUrl(), info.getRelatedStreams(), 0);
+    }
+
+    public PlaylistPlayQueue(final int serviceId,
+                             final String url,
+                             final String nextPageUrl,
+                             final List<InfoItem> streams,
+                             final int index) {
+        super(serviceId, url, nextPageUrl, streams, index);
+    }
+
+    @Override
+    protected String getTag() {
+        return "PlaylistPlayQueue@" + Integer.toHexString(hashCode());
+    }
+
+    @Override
+    public void fetch() {
+        if (this.isInitial) {
+            ExtractorHelper.getPlaylistInfo(this.serviceId, this.baseUrl, false)
+                    .subscribeOn(Schedulers.io())
+                    .observeOn(AndroidSchedulers.mainThread())
+                    .subscribe(getHeadListObserver());
+        } else {
+            ExtractorHelper.getMorePlaylistItems(this.serviceId, this.baseUrl, this.nextUrl)
+                    .subscribeOn(Schedulers.io())
+                    .observeOn(AndroidSchedulers.mainThread())
+                    .subscribe(getNextItemsObserver());
+        }
+    }
+}

app/src/main/java/org/schabi/newpipe/playlist/SinglePlayQueue.java

@@ -1,12 +1,21 @@
 package org.schabi.newpipe.playlist;
 
 import org.schabi.newpipe.extractor.stream.StreamInfo;
+import org.schabi.newpipe.extractor.stream.StreamInfoItem;
 
 import java.util.Collections;
 
 public final class SinglePlayQueue extends PlayQueue {
+    public SinglePlayQueue(final StreamInfoItem item) {
+        this(new PlayQueueItem(item));
+    }
+
     public SinglePlayQueue(final StreamInfo info) {
-        super(0, Collections.singletonList(new PlayQueueItem(info)));
+        this(new PlayQueueItem(info));
+    }
+
+    private SinglePlayQueue(final PlayQueueItem playQueueItem) {
+        super(0, Collections.singletonList(playQueueItem));
     }
 
     @Override

app/src/main/java/org/schabi/newpipe/report/ErrorActivity.java

@@ -44,6 +44,7 @@ import java.io.StringWriter;
 import java.text.SimpleDateFormat;
 import java.util.Date;
 import java.util.List;
+import java.util.Locale;
 import java.util.TimeZone;
 import java.util.Vector;
 
@@ -144,12 +145,7 @@ public class ErrorActivity extends AppCompatActivity {
     // async call
     public static void reportError(Handler handler, final Context context, final List<Throwable> el,
                                    final Class returnActivity, final View rootView, final ErrorInfo errorInfo) {
-        handler.post(new Runnable() {
-            @Override
-            public void run() {
-                reportError(context, el, returnActivity, rootView, errorInfo);
-            }
-        });
+        handler.post(() -> reportError(context, el, returnActivity, rootView, errorInfo));
     }
 
     public static void reportError(final Context context, final CrashReportData report, final ErrorInfo errorInfo) {
@@ -160,7 +156,7 @@ public class ErrorActivity extends AppCompatActivity {
                 key = k;
             }
         }
-        String[] el = new String[]{report.get(key)};
+        String[] el = new String[]{report.get(key).toString()};
 
         Intent intent = new Intent(context, ErrorActivity.class);
         intent.putExtra(ERROR_INFO, errorInfo);
@@ -218,17 +214,13 @@ public class ErrorActivity extends AppCompatActivity {
         addGuruMeditaion();
         currentTimeStamp = getCurrentTimeStamp();
 
-        reportButton.setOnClickListener(new View.OnClickListener() {
-            @Override
-            public void onClick(View v) {
+        reportButton.setOnClickListener((View v) -> {
+            Intent i = new Intent(Intent.ACTION_SENDTO);
+            i.setData(Uri.parse("mailto:" + ERROR_EMAIL_ADDRESS))
+                    .putExtra(Intent.EXTRA_SUBJECT, ERROR_EMAIL_SUBJECT)
+                    .putExtra(Intent.EXTRA_TEXT, buildJson());
 
-                Intent intent = new Intent(Intent.ACTION_SENDTO);
-                intent.setData(Uri.parse("mailto:" + ERROR_EMAIL_ADDRESS))
-                        .putExtra(Intent.EXTRA_SUBJECT, ERROR_EMAIL_SUBJECT)
-                        .putExtra(Intent.EXTRA_TEXT, buildJson());
-
-                startActivity(Intent.createChooser(intent, "Send Email"));
-            }
+            startActivity(Intent.createChooser(i, "Send Email"));
         });
         reportButton.setEnabled(false);
 
@@ -382,7 +374,7 @@ public class ErrorActivity extends AppCompatActivity {
 
     private String getContentLangString() {
         return PreferenceManager.getDefaultSharedPreferences(this)
-                .getString(this.getString(R.string.search_language_key), "none");
+                .getString(this.getString(R.string.content_country_key), "none");
     }
 
     private String getOsString() {

app/src/main/java/org/schabi/newpipe/settings/ContentSettingsFragment.java

@@ -1,9 +1,14 @@
 package org.schabi.newpipe.settings;
 
 import android.app.Activity;
+import android.app.AlertDialog;
+import android.content.DialogInterface;
+import android.content.Intent;
 import android.os.Bundle;
 import android.support.v7.preference.ListPreference;
 import android.support.v7.preference.Preference;
+import android.util.Log;
+import android.widget.Toast;
 
 import org.schabi.newpipe.R;
 import org.schabi.newpipe.extractor.NewPipe;
@@ -12,91 +17,208 @@ import org.schabi.newpipe.extractor.exceptions.ExtractionException;
 import org.schabi.newpipe.report.ErrorActivity;
 import org.schabi.newpipe.report.UserAction;
 import org.schabi.newpipe.util.Constants;
+import org.schabi.newpipe.util.FilePickerActivityHelper;
 import org.schabi.newpipe.util.KioskTranslator;
+import org.schabi.newpipe.util.ZipHelper;
+
+import java.io.BufferedInputStream;
+import java.io.BufferedOutputStream;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+import java.util.Locale;
+import java.util.zip.ZipFile;
+import java.util.zip.ZipInputStream;
+import java.util.zip.ZipOutputStream;
+
+import javax.annotation.Nonnull;
 
 public class ContentSettingsFragment extends BasePreferenceFragment {
 
+    private static final int REQUEST_IMPORT_PATH = 8945;
+    private static final int REQUEST_EXPORT_PATH = 30945;
+
+    private String homeDir;
+    private File databasesDir;
+    private File newpipe_db;
+    private File newpipe_db_journal;
+
     @Override
     public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {
 
+        homeDir = getActivity().getApplicationInfo().dataDir;
+        databasesDir = new File(homeDir + "/databases");
+        newpipe_db = new File(homeDir + "/databases/newpipe.db");
+        newpipe_db_journal = new File(homeDir + "/databases/newpipe.db-journal");
+
         addPreferencesFromResource(R.xml.content_settings);
 
         final ListPreference mainPageContentPref =  (ListPreference) findPreference(getString(R.string.main_page_content_key));
-        mainPageContentPref.setOnPreferenceChangeListener(new Preference.OnPreferenceChangeListener() {
-                    @Override
-                    public boolean onPreferenceChange(Preference preference, Object newValueO) {
-                        final String newValue = newValueO.toString();
+        mainPageContentPref.setOnPreferenceChangeListener((Preference preference, Object newValueO) -> {
+            final String newValue = newValueO.toString();
 
-                        final String mainPrefOldValue =
-                                defaultPreferences.getString(getString(R.string.main_page_content_key), "blank_page");
-                        final String mainPrefOldSummary = getMainPagePrefSummery(mainPrefOldValue, mainPageContentPref);
+            final String mainPrefOldValue =
+                    defaultPreferences.getString(getString(R.string.main_page_content_key), "blank_page");
+            final String mainPrefOldSummary = getMainPagePrefSummery(mainPrefOldValue, mainPageContentPref);
 
-                        if(newValue.equals(getString(R.string.kiosk_page_key))) {
-                            SelectKioskFragment selectKioskFragment = new SelectKioskFragment();
-                            selectKioskFragment.setOnSelectedLisener(new SelectKioskFragment.OnSelectedLisener() {
-                                @Override
-                                public void onKioskSelected(String kioskId, int service_id) {
-                                    defaultPreferences.edit()
-                                            .putInt(getString(R.string.main_page_selected_service), service_id).apply();
-                                    defaultPreferences.edit()
-                                            .putString(getString(R.string.main_page_selectd_kiosk_id), kioskId).apply();
-                                    String serviceName = "";
-                                    try {
-                                        serviceName = NewPipe.getService(service_id).getServiceInfo().name;
-                                    } catch (ExtractionException e) {
-                                        onError(e);
-                                    }
-                                    String kioskName = KioskTranslator.getTranslatedKioskName(kioskId,
-                                            getContext());
-
-                                    String summary =
-                                            String.format(getString(R.string.service_kiosk_string),
-                                                    serviceName,
-                                                    kioskName);
-
-                                    mainPageContentPref.setSummary(summary);
-                                }
-                            });
-                            selectKioskFragment.setOnCancelListener(new SelectKioskFragment.OnCancelListener() {
-                                @Override
-                                public void onCancel() {
-                                    mainPageContentPref.setSummary(mainPrefOldSummary);
-                                    mainPageContentPref.setValue(mainPrefOldValue);
-                                }
-                            });
-                            selectKioskFragment.show(getFragmentManager(), "select_kiosk");
-                        } else if(newValue.equals(getString(R.string.channel_page_key))) {
-                            SelectChannelFragment selectChannelFragment = new SelectChannelFragment();
-                            selectChannelFragment.setOnSelectedLisener(new SelectChannelFragment.OnSelectedLisener() {
-                                @Override
-                                public void onChannelSelected(String url, String name, int service) {
-                                    defaultPreferences.edit()
-                                            .putInt(getString(R.string.main_page_selected_service), service).apply();
-                                    defaultPreferences.edit()
-                                            .putString(getString(R.string.main_page_selected_channel_url), url).apply();
-                                    defaultPreferences.edit()
-                                            .putString(getString(R.string.main_page_selected_channel_name), name).apply();
-
-                                    mainPageContentPref.setSummary(name);
-                                }
-                            });
-                            selectChannelFragment.setOnCancelListener(new SelectChannelFragment.OnCancelListener() {
-                                @Override
-                                public void onCancel() {
-                                    mainPageContentPref.setSummary(mainPrefOldSummary);
-                                    mainPageContentPref.setValue(mainPrefOldValue);
-                                }
-                            });
-                            selectChannelFragment.show(getFragmentManager(), "select_channel");
-                        } else {
-                            mainPageContentPref.setSummary(getMainPageSummeryByKey(newValue));
-                        }
-
-                        defaultPreferences.edit().putBoolean(Constants.KEY_MAIN_PAGE_CHANGE, true).apply();
-
-                        return true;
+            if(newValue.equals(getString(R.string.kiosk_page_key))) {
+                SelectKioskFragment selectKioskFragment = new SelectKioskFragment();
+                selectKioskFragment.setOnSelectedLisener((String kioskId, int service_id) -> {
+                    defaultPreferences.edit()
+                            .putInt(getString(R.string.main_page_selected_service), service_id).apply();
+                    defaultPreferences.edit()
+                            .putString(getString(R.string.main_page_selectd_kiosk_id), kioskId).apply();
+                    String serviceName = "";
+                    try {
+                        serviceName = NewPipe.getService(service_id).getServiceInfo().name;
+                    } catch (ExtractionException e) {
+                        onError(e);
                     }
+                    String kioskName = KioskTranslator.getTranslatedKioskName(kioskId,
+                            getContext());
+
+                    String summary =
+                            String.format(getString(R.string.service_kiosk_string),
+                                    serviceName,
+                                    kioskName);
+
+                    mainPageContentPref.setSummary(summary);
                 });
+                selectKioskFragment.setOnCancelListener(() -> {
+                    mainPageContentPref.setSummary(mainPrefOldSummary);
+                    mainPageContentPref.setValue(mainPrefOldValue);
+                });
+                selectKioskFragment.show(getFragmentManager(), "select_kiosk");
+            } else if(newValue.equals(getString(R.string.channel_page_key))) {
+                SelectChannelFragment selectChannelFragment = new SelectChannelFragment();
+                selectChannelFragment.setOnSelectedLisener((String url, String name, int service) -> {
+                    defaultPreferences.edit()
+                            .putInt(getString(R.string.main_page_selected_service), service).apply();
+                    defaultPreferences.edit()
+                            .putString(getString(R.string.main_page_selected_channel_url), url).apply();
+                    defaultPreferences.edit()
+                            .putString(getString(R.string.main_page_selected_channel_name), name).apply();
+
+                    mainPageContentPref.setSummary(name);
+                });
+                selectChannelFragment.setOnCancelListener(() -> {
+                    mainPageContentPref.setSummary(mainPrefOldSummary);
+                    mainPageContentPref.setValue(mainPrefOldValue);
+                });
+                selectChannelFragment.show(getFragmentManager(), "select_channel");
+            } else {
+                mainPageContentPref.setSummary(getMainPageSummeryByKey(newValue));
+            }
+
+            defaultPreferences.edit().putBoolean(Constants.KEY_MAIN_PAGE_CHANGE, true).apply();
+
+            return true;
+        });
+
+        Preference importDataPreference = findPreference(getString(R.string.import_data));
+        importDataPreference.setOnPreferenceClickListener((Preference p) -> {
+            Intent i = new Intent(getActivity(), FilePickerActivityHelper.class)
+                    .putExtra(FilePickerActivityHelper.EXTRA_ALLOW_MULTIPLE, false)
+                    .putExtra(FilePickerActivityHelper.EXTRA_ALLOW_CREATE_DIR, false)
+                    .putExtra(FilePickerActivityHelper.EXTRA_MODE, FilePickerActivityHelper.MODE_FILE);
+            startActivityForResult(i, REQUEST_IMPORT_PATH);
+            return true;
+        });
+
+        Preference exportDataPreference = findPreference(getString(R.string.export_data));
+        exportDataPreference.setOnPreferenceClickListener((Preference p) -> {
+            Intent i = new Intent(getActivity(), FilePickerActivityHelper.class)
+                    .putExtra(FilePickerActivityHelper.EXTRA_ALLOW_MULTIPLE, false)
+                    .putExtra(FilePickerActivityHelper.EXTRA_ALLOW_CREATE_DIR, true)
+                    .putExtra(FilePickerActivityHelper.EXTRA_MODE, FilePickerActivityHelper.MODE_DIR);
+            startActivityForResult(i, REQUEST_EXPORT_PATH);
+            return true;
+        });
+    }
+
+    @Override
+    public void onActivityResult(int requestCode, int resultCode, @Nonnull Intent data) {
+        super.onActivityResult(requestCode, resultCode, data);
+        if (DEBUG) {
+            Log.d(TAG, "onActivityResult() called with: requestCode = [" + requestCode + "], resultCode = [" + resultCode + "], data = [" + data + "]");
+        }
+
+        if ((requestCode == REQUEST_IMPORT_PATH || requestCode == REQUEST_EXPORT_PATH)
+                && resultCode == Activity.RESULT_OK) {
+                String path = data.getData().getPath();
+                if (requestCode == REQUEST_EXPORT_PATH) {
+                    SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd_HHmmss", Locale.US);
+                    exportDatabase(path + "/NewPipeData-" + sdf.format(new Date()) + ".zip");
+                } else {
+                    AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
+                    builder.setMessage(R.string.override_current_data)
+                            .setPositiveButton(android.R.string.ok,
+                                    (DialogInterface d, int id) -> importDatabase(path))
+                            .setNegativeButton(android.R.string.cancel,
+                                    (DialogInterface d, int id) -> d.cancel());
+                    builder.create().show();
+                }
+        }
+    }
+
+    private void exportDatabase(String path) {
+        try {
+            ZipOutputStream outZip = new ZipOutputStream(
+                    new BufferedOutputStream(
+                            new FileOutputStream(path)));
+            ZipHelper.addFileToZip(outZip, newpipe_db.getPath(), "newpipe.db");
+            ZipHelper.addFileToZip(outZip, newpipe_db_journal.getPath(), "newpipe.db-journal");
+
+            outZip.close();
+
+            Toast.makeText(getContext(), R.string.export_complete_toast, Toast.LENGTH_SHORT)
+                    .show();
+        } catch (Exception e) {
+            onError(e);
+        }
+    }
+
+    private void importDatabase(String filePath) {
+        // check if file is supported
+        ZipFile zipFile = null;
+        try {
+            zipFile = new ZipFile(filePath);
+        } catch (IOException ioe) {
+            Toast.makeText(getContext(), R.string.no_valid_zip_file, Toast.LENGTH_SHORT)
+                    .show();
+            return;
+        } finally {
+            try {
+                zipFile.close();
+            } catch (Exception e){}
+        }
+
+        try {
+            ZipInputStream zipIn = new ZipInputStream(
+                    new BufferedInputStream(
+                            new FileInputStream(filePath)));
+
+            if (!databasesDir.exists() && !databasesDir.mkdir()) {
+                throw new Exception("Could not create databases dir");
+            }
+
+            if(!(ZipHelper.extractFileFromZip(zipIn, newpipe_db.getPath(), "newpipe.db")
+                && ZipHelper.extractFileFromZip(zipIn, newpipe_db_journal.getPath(), "newpipe.db-journal"))) {
+               Toast.makeText(getContext(), R.string.could_not_import_all_files, Toast.LENGTH_LONG)
+                       .show();
+            }
+
+            zipIn.close();
+
+            // restart app to properly load db
+            //App.restart(getContext());
+            System.exit(0);
+        } catch (Exception e) {
+            onError(e);
+        }
     }
 
     @Override
@@ -117,8 +239,8 @@ public class ContentSettingsFragment extends BasePreferenceFragment {
                                 getString(R.string.main_page_selected_service), 0));
 
                 String kioskName = KioskTranslator.getTranslatedKioskName(
-                                defaultPreferences.getString(
-                                        getString(R.string.main_page_selectd_kiosk_id), "Trending"),
+                        defaultPreferences.getString(
+                                getString(R.string.main_page_selectd_kiosk_id), "Trending"),
                         getContext());
 
                 String summary =

app/src/main/java/org/schabi/newpipe/settings/DownloadSettingsFragment.java

@@ -46,7 +46,8 @@ public class DownloadSettingsFragment extends BasePreferenceFragment {
              Log.d(TAG, "onPreferenceTreeClick() called with: preference = [" + preference + "]");
         }
 
-        if (preference.getKey().equals(DOWNLOAD_PATH_PREFERENCE) || preference.getKey().equals(DOWNLOAD_PATH_AUDIO_PREFERENCE)) {
+        if (preference.getKey().equals(DOWNLOAD_PATH_PREFERENCE)
+                || preference.getKey().equals(DOWNLOAD_PATH_AUDIO_PREFERENCE)) {
             Intent i = new Intent(getActivity(), FilePickerActivityHelper.class)
                     .putExtra(FilePickerActivityHelper.EXTRA_ALLOW_MULTIPLE, false)
                     .putExtra(FilePickerActivityHelper.EXTRA_ALLOW_CREATE_DIR, true)

app/src/main/java/org/schabi/newpipe/settings/SelectKioskFragment.java

@@ -14,21 +14,17 @@ import android.widget.ImageView;
 import android.widget.TextView;
 
 import org.schabi.newpipe.R;
-import org.schabi.newpipe.database.subscription.SubscriptionEntity;
 import org.schabi.newpipe.extractor.NewPipe;
+import org.schabi.newpipe.extractor.ServiceList;
 import org.schabi.newpipe.extractor.StreamingService;
-import org.schabi.newpipe.fragments.subscription.SubscriptionService;
 import org.schabi.newpipe.report.ErrorActivity;
 import org.schabi.newpipe.report.UserAction;
 import org.schabi.newpipe.util.KioskTranslator;
-import org.schabi.newpipe.util.ServiceIconMapper;
+import org.schabi.newpipe.util.ServiceHelper;
 
 import java.util.List;
 import java.util.Vector;
 
-import io.reactivex.android.schedulers.AndroidSchedulers;
-import io.reactivex.schedulers.Schedulers;
-
 /**
  * Created by Christian Schabesberger on 09.10.17.
  * SelectKioskFragment.java is part of NewPipe.
@@ -125,13 +121,15 @@ public class SelectKioskFragment extends DialogFragment {
                 throws Exception {
 
             for(StreamingService service : NewPipe.getServices()) {
+                //TODO: Multi-service support
+                if (service.getServiceId() != ServiceList.YouTube.getId()) continue;
+
                 for(String kioskId : service.getKioskList().getAvailableKiosks()) {
                     String name = String.format(getString(R.string.service_kiosk_string),
                             service.getServiceInfo().name,
                             KioskTranslator.getTranslatedKioskName(kioskId, getContext()));
                     kioskList.add(new Entry(
-                            //ServiceIconMapper.getIconResource(service.getServiceId()),
-                            ServiceIconMapper.getIconResource(-1),
+                            ServiceHelper.getIcon(service.getServiceId()),
                             service.getServiceId(),
                             kioskId,
                             name));
@@ -140,9 +138,7 @@ public class SelectKioskFragment extends DialogFragment {
         }
 
         public int getItemCount() {
-            //todo: uncommend this line on multyservice support
-            //return kioskList.size();
-            return 1;
+            return kioskList.size();
         }
 
         public SelectKioskItemHolder onCreateViewHolder(ViewGroup parent, int type) {

app/src/main/java/org/schabi/newpipe/settings/SettingsActivity.java

@@ -43,7 +43,8 @@ public class SettingsActivity extends AppCompatActivity implements BasePreferenc
 
     @Override
     protected void onCreate(Bundle savedInstanceBundle) {
-        ThemeHelper.setTheme(this);
+        setTheme(ThemeHelper.getSettingsThemeStyle(this));
+
         super.onCreate(savedInstanceBundle);
         setContentView(R.layout.settings_layout);
 
@@ -72,7 +73,9 @@ public class SettingsActivity extends AppCompatActivity implements BasePreferenc
     public boolean onOptionsItemSelected(MenuItem item) {
         int id = item.getItemId();
         if (id == android.R.id.home) {
-            finish();
+            if (getSupportFragmentManager().getBackStackEntryCount() == 0) {
+                finish();
+            } else getSupportFragmentManager().popBackStack();
         }
         return true;
     }

app/src/main/java/org/schabi/newpipe/util/ExtractorHelper.java

@@ -19,29 +19,38 @@
 
 package org.schabi.newpipe.util;
 
+import android.content.Context;
+import android.content.Intent;
+import android.os.Handler;
 import android.util.Log;
+import android.widget.Toast;
 
 import org.schabi.newpipe.MainActivity;
+import org.schabi.newpipe.R;
+import org.schabi.newpipe.ReCaptchaActivity;
 import org.schabi.newpipe.extractor.Info;
 import org.schabi.newpipe.extractor.ListExtractor.NextItemsResult;
 import org.schabi.newpipe.extractor.NewPipe;
 import org.schabi.newpipe.extractor.channel.ChannelInfo;
+import org.schabi.newpipe.extractor.exceptions.ContentNotAvailableException;
+import org.schabi.newpipe.extractor.exceptions.ParsingException;
+import org.schabi.newpipe.extractor.exceptions.ReCaptchaException;
 import org.schabi.newpipe.extractor.kiosk.KioskInfo;
 import org.schabi.newpipe.extractor.playlist.PlaylistInfo;
 import org.schabi.newpipe.extractor.search.SearchEngine;
 import org.schabi.newpipe.extractor.search.SearchResult;
+import org.schabi.newpipe.extractor.services.youtube.YoutubeStreamExtractor;
 import org.schabi.newpipe.extractor.stream.StreamInfo;
+import org.schabi.newpipe.report.ErrorActivity;
+import org.schabi.newpipe.report.UserAction;
 
+import java.io.IOException;
 import java.io.InterruptedIOException;
 import java.util.List;
-import java.util.concurrent.Callable;
 
 import io.reactivex.Maybe;
-import io.reactivex.MaybeSource;
 import io.reactivex.Single;
 import io.reactivex.annotations.NonNull;
-import io.reactivex.functions.Consumer;
-import io.reactivex.functions.Function;
 
 public final class ExtractorHelper {
     private static final String TAG = ExtractorHelper.class.getSimpleName();
@@ -57,104 +66,96 @@ public final class ExtractorHelper {
         }
     }
 
-    public static Single<SearchResult> searchFor(final int serviceId, final String query, final int pageNumber, final String searchLanguage, final SearchEngine.Filter filter) {
+    public static Single<SearchResult> searchFor(final int serviceId,
+                                                 final String query,
+                                                 final int pageNumber,
+                                                 final String contentCountry,
+                                                 final SearchEngine.Filter filter) {
         checkServiceId(serviceId);
-        return Single.fromCallable(new Callable<SearchResult>() {
-            @Override
-            public SearchResult call() throws Exception {
-                return SearchResult.getSearchResult(NewPipe.getService(serviceId).getSearchEngine(),
-                        query, pageNumber, searchLanguage, filter);
-            }
-        });
+        return Single.fromCallable(() ->
+            SearchResult.getSearchResult(NewPipe.getService(serviceId).getSearchEngine(),
+                    query, pageNumber, contentCountry, filter)
+        );
     }
 
-    public static Single<NextItemsResult> getMoreSearchItems(final int serviceId, final String query, final int nextPageNumber, final String searchLanguage, final SearchEngine.Filter filter) {
+    public static Single<NextItemsResult> getMoreSearchItems(final int serviceId,
+                                                             final String query,
+                                                             final int nextPageNumber,
+                                                             final String searchLanguage,
+                                                             final SearchEngine.Filter filter) {
         checkServiceId(serviceId);
         return searchFor(serviceId, query, nextPageNumber, searchLanguage, filter)
-                .map(new Function<SearchResult, NextItemsResult>() {
-                    @Override
-                    public NextItemsResult apply(@NonNull SearchResult searchResult) throws Exception {
-                        return new NextItemsResult(searchResult.resultList, nextPageNumber + "", searchResult.errors);
-                    }
-                });
+                .map((@NonNull SearchResult searchResult) ->
+                        new NextItemsResult(searchResult.resultList,
+                                nextPageNumber + "",
+                                searchResult.errors));
     }
 
-    public static Single<List<String>> suggestionsFor(final int serviceId, final String query, final String searchLanguage) {
+    public static Single<List<String>> suggestionsFor(final int serviceId,
+                                                      final String query,
+                                                      final String contentCountry) {
         checkServiceId(serviceId);
-        return Single.fromCallable(new Callable<List<String>>() {
-            @Override
-            public List<String> call() throws Exception {
-                return NewPipe.getService(serviceId).getSuggestionExtractor().suggestionList(query, searchLanguage);
-            }
-        });
+        return Single.fromCallable(() ->
+                NewPipe.getService(serviceId)
+                        .getSuggestionExtractor()
+                        .suggestionList(query, contentCountry));
     }
 
-    public static Single<StreamInfo> getStreamInfo(final int serviceId, final String url, boolean forceLoad) {
+    public static Single<StreamInfo> getStreamInfo(final int serviceId,
+                                                   final String url,
+                                                   boolean forceLoad) {
         checkServiceId(serviceId);
-        return checkCache(forceLoad, serviceId, url, Single.fromCallable(new Callable<StreamInfo>() {
-            @Override
-            public StreamInfo call() throws Exception {
-                return StreamInfo.getInfo(NewPipe.getService(serviceId), url);
-            }
-        }));
+        return checkCache(forceLoad, serviceId, url, Single.fromCallable(() ->
+                StreamInfo.getInfo(NewPipe.getService(serviceId), url)));
     }
 
-    public static Single<ChannelInfo> getChannelInfo(final int serviceId, final String url, boolean forceLoad) {
+    public static Single<ChannelInfo> getChannelInfo(final int serviceId,
+                                                     final String url,
+                                                     boolean forceLoad) {
         checkServiceId(serviceId);
-        return checkCache(forceLoad, serviceId, url, Single.fromCallable(new Callable<ChannelInfo>() {
-            @Override
-            public ChannelInfo call() throws Exception {
-                return ChannelInfo.getInfo(NewPipe.getService(serviceId), url);
-            }
-        }));
+        return checkCache(forceLoad, serviceId, url, Single.fromCallable(() ->
+                ChannelInfo.getInfo(NewPipe.getService(serviceId), url)));
     }
 
-    public static Single<NextItemsResult> getMoreChannelItems(final int serviceId, final String url, final String nextStreamsUrl) {
+    public static Single<NextItemsResult> getMoreChannelItems(final int serviceId,
+                                                              final String url,
+                                                              final String nextStreamsUrl) {
         checkServiceId(serviceId);
-        return Single.fromCallable(new Callable<NextItemsResult>() {
-            @Override
-            public NextItemsResult call() throws Exception {
-                return ChannelInfo.getMoreItems(NewPipe.getService(serviceId), url, nextStreamsUrl);
-            }
-        });
+        return Single.fromCallable(() ->
+                ChannelInfo.getMoreItems(NewPipe.getService(serviceId), url, nextStreamsUrl));
     }
 
-    public static Single<PlaylistInfo> getPlaylistInfo(final int serviceId, final String url, boolean forceLoad) {
+    public static Single<PlaylistInfo> getPlaylistInfo(final int serviceId,
+                                                       final String url,
+                                                       boolean forceLoad) {
         checkServiceId(serviceId);
-        return checkCache(forceLoad, serviceId, url, Single.fromCallable(new Callable<PlaylistInfo>() {
-            @Override
-            public PlaylistInfo call() throws Exception {
-                return PlaylistInfo.getInfo(NewPipe.getService(serviceId), url);
-            }
-        }));
+        return checkCache(forceLoad, serviceId, url, Single.fromCallable(() ->
+                PlaylistInfo.getInfo(NewPipe.getService(serviceId), url)));
     }
 
-    public static Single<NextItemsResult> getMorePlaylistItems(final int serviceId, final String url, final String nextStreamsUrl) {
+    public static Single<NextItemsResult> getMorePlaylistItems(final int serviceId,
+                                                               final String url,
+                                                               final String nextStreamsUrl) {
         checkServiceId(serviceId);
-        return Single.fromCallable(new Callable<NextItemsResult>() {
-            @Override
-            public NextItemsResult call() throws Exception {
-                return PlaylistInfo.getMoreItems(NewPipe.getService(serviceId), url, nextStreamsUrl);
-            }
-        });
+        return Single.fromCallable(() ->
+                PlaylistInfo.getMoreItems(NewPipe.getService(serviceId), url, nextStreamsUrl));
     }
 
-    public static Single<KioskInfo> getKioskInfo(final int serviceId, final String url, final String contentCountry, boolean forceLoad) {
-        return checkCache(forceLoad, serviceId, url, Single.fromCallable(new Callable<KioskInfo>() {
-            @Override
-            public KioskInfo call() throws Exception {
-                return KioskInfo.getInfo(NewPipe.getService(serviceId), url, contentCountry);
-            }
-        }));
+    public static Single<KioskInfo> getKioskInfo(final int serviceId,
+                                                 final String url,
+                                                 final String contentCountry,
+                                                 boolean forceLoad) {
+        return checkCache(forceLoad, serviceId, url, Single.fromCallable(() ->
+                KioskInfo.getInfo(NewPipe.getService(serviceId), url, contentCountry)));
     }
 
-    public static Single<NextItemsResult> getMoreKioskItems(final int serviceId, final String url, final String nextStreamsUrl) {
-        return Single.fromCallable(new Callable<NextItemsResult>() {
-            @Override
-            public NextItemsResult call() throws Exception {
-                return KioskInfo.getMoreItems(NewPipe.getService(serviceId), url, nextStreamsUrl);
-            }
-        });
+    public static Single<NextItemsResult> getMoreKioskItems(final int serviceId,
+                                                            final String url,
+                                                            final String nextStreamsUrl,
+                                                            final String contentCountry) {
+        return Single.fromCallable(() ->
+                KioskInfo.getMoreItems(NewPipe.getService(serviceId),
+                        url, nextStreamsUrl, contentCountry));
     }
 
     /*//////////////////////////////////////////////////////////////////////////
@@ -162,24 +163,24 @@ public final class ExtractorHelper {
     //////////////////////////////////////////////////////////////////////////*/
 
     /**
-     * Check if we can load it from the cache (forceLoad parameter), if we can't, load from the network (Single loadFromNetwork)
+     * Check if we can load it from the cache (forceLoad parameter), if we can't,
+     * load from the network (Single loadFromNetwork)
      * and put the results in the cache.
      */
-    private static <I extends Info> Single<I> checkCache(boolean forceLoad, int serviceId, String url, Single<I> loadFromNetwork) {
+    private static <I extends Info> Single<I> checkCache(boolean forceLoad,
+                                                         int serviceId,
+                                                         String url,
+                                                         Single<I> loadFromNetwork) {
         checkServiceId(serviceId);
-        loadFromNetwork = loadFromNetwork.doOnSuccess(new Consumer<I>() {
-            @Override
-            public void accept(@NonNull I i) throws Exception {
-                cache.putInfo(i);
-            }
-        });
+        loadFromNetwork = loadFromNetwork.doOnSuccess((@NonNull I i) -> cache.putInfo(i));
 
         Single<I> load;
         if (forceLoad) {
             cache.removeInfo(serviceId, url);
             load = loadFromNetwork;
         } else {
-            load = Maybe.concat(ExtractorHelper.<I>loadFromCache(serviceId, url), loadFromNetwork.toMaybe())
+            load = Maybe.concat(ExtractorHelper.<I>loadFromCache(serviceId, url),
+                    loadFromNetwork.toMaybe())
                     .firstElement() //Take the first valid
                     .toSingle();
         }
@@ -192,9 +193,7 @@ public final class ExtractorHelper {
      */
     public static <I extends Info> Maybe<I> loadFromCache(final int serviceId, final String url) {
         checkServiceId(serviceId);
-        return Maybe.defer(new Callable<MaybeSource<? extends I>>() {
-            @Override
-            public MaybeSource<? extends I> call() throws Exception {
+        return Maybe.defer(() -> {
                 //noinspection unchecked
                 I info = (I) cache.getFromKey(serviceId, url);
                 if (MainActivity.DEBUG) Log.d(TAG, "loadFromCache() called, info > " + info);
@@ -205,8 +204,38 @@ public final class ExtractorHelper {
                 }
 
                 return Maybe.empty();
+            });
+    }
+
+    /**
+     * A simple and general error handler that show a Toast for known exceptions, and for others, opens the report error activity with the (optional) error message.
+     */
+    public static void handleGeneralException(Context context, int serviceId, String url, Throwable exception, UserAction userAction, String optionalErrorMessage) {
+        final Handler handler = new Handler(context.getMainLooper());
+
+        handler.post(() -> {
+            if (exception instanceof ReCaptchaException) {
+                Toast.makeText(context, R.string.recaptcha_request_toast, Toast.LENGTH_LONG).show();
+                // Starting ReCaptcha Challenge Activity
+                Intent intent = new Intent(context, ReCaptchaActivity.class);
+                intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+                context.startActivity(intent);
+            } else if (exception instanceof IOException) {
+                Toast.makeText(context, R.string.network_error, Toast.LENGTH_LONG).show();
+            } else if (exception instanceof YoutubeStreamExtractor.GemaException) {
+                Toast.makeText(context, R.string.blocked_by_gema, Toast.LENGTH_LONG).show();
+            } else if (exception instanceof YoutubeStreamExtractor.LiveStreamException) {
+                Toast.makeText(context, R.string.live_streams_not_supported, Toast.LENGTH_LONG).show();
+            } else if (exception instanceof ContentNotAvailableException) {
+                Toast.makeText(context, R.string.content_not_available, Toast.LENGTH_LONG).show();
+            } else {
+                int errorId = exception instanceof YoutubeStreamExtractor.DecryptException ? R.string.youtube_signature_decryption_error :
+                        exception instanceof ParsingException ? R.string.parsing_error : R.string.general_error;
+                ErrorActivity.reportError(handler, context, exception, MainActivity.class, null, ErrorActivity.ErrorInfo.make(userAction,
+                        serviceId == -1 ? "none" : NewPipe.getNameOfService(serviceId), url + (optionalErrorMessage == null ? "" : optionalErrorMessage), errorId));
             }
         });
+
     }
 
     /**
@@ -214,21 +243,26 @@ public final class ExtractorHelper {
      *
      * @see Class#isAssignableFrom(Class)
      */
-    public static boolean hasAssignableCauseThrowable(Throwable throwable, Class<?>... causesToCheck) {
+    public static boolean hasAssignableCauseThrowable(Throwable throwable,
+                                                      Class<?>... causesToCheck) {
         // Check if getCause is not the same as cause (the getCause is already the root),
         // as it will cause a infinite loop if it is
         Throwable cause, getCause = throwable;
 
+        // Check if throwable is a subclass of any of the filtered classes
+        final Class throwableClass = throwable.getClass();
         for (Class<?> causesEl : causesToCheck) {
-            if (throwable.getClass().isAssignableFrom(causesEl)) {
+            if (causesEl.isAssignableFrom(throwableClass)) {
                 return true;
             }
         }
 
+        // Iteratively checks if the root cause of the throwable is a subclass of the filtered class
         while ((cause = throwable.getCause()) != null && getCause != cause) {
             getCause = cause;
+            final Class causeClass = cause.getClass();
             for (Class<?> causesEl : causesToCheck) {
-                if (cause.getClass().isAssignableFrom(causesEl)) {
+                if (causesEl.isAssignableFrom(causeClass)) {
                     return true;
                 }
             }
@@ -265,6 +299,8 @@ public final class ExtractorHelper {
      * Check if throwable have Interrupted* exception as one of its causes.
      */
     public static boolean isInterruptedCaused(Throwable throwable) {
-        return ExtractorHelper.hasExactCauseThrowable(throwable, InterruptedIOException.class, InterruptedException.class);
+        return ExtractorHelper.hasExactCauseThrowable(throwable,
+                InterruptedIOException.class,
+                InterruptedException.class);
     }
 }

app/src/main/java/org/schabi/newpipe/util/InfoCache.java

@@ -26,6 +26,9 @@ import android.util.Log;
 import org.schabi.newpipe.MainActivity;
 import org.schabi.newpipe.extractor.Info;
 
+import java.util.Map;
+import java.util.concurrent.TimeUnit;
+
 
 public final class InfoCache {
     private static final boolean DEBUG = MainActivity.DEBUG;
@@ -37,9 +40,9 @@ public final class InfoCache {
      * Trim the cache to this size
      */
     private static final int TRIM_CACHE_TO = 30;
+    private static final int DEFAULT_TIMEOUT_HOURS = 4;
 
-    // TODO: Replace to one with timeout (like the one from guava)
-    private static final LruCache<String, Info> lruCache = new LruCache<>(MAX_ITEMS_ON_CACHE);
+    private static final LruCache<String, CacheData> lruCache = new LruCache<>(MAX_ITEMS_ON_CACHE);
 
     private InfoCache() {
         //no instance
@@ -52,28 +55,29 @@ public final class InfoCache {
     public Info getFromKey(int serviceId, @NonNull String url) {
         if (DEBUG) Log.d(TAG, "getFromKey() called with: serviceId = [" + serviceId + "], url = [" + url + "]");
         synchronized (lruCache) {
-            return lruCache.get(serviceId + url);
+            return getInfo(lruCache, keyOf(serviceId, url));
         }
     }
 
     public void putInfo(@NonNull Info info) {
         if (DEBUG) Log.d(TAG, "putInfo() called with: info = [" + info + "]");
         synchronized (lruCache) {
-            lruCache.put(info.service_id + info.url, info);
+            final CacheData data = new CacheData(info, DEFAULT_TIMEOUT_HOURS, TimeUnit.HOURS);
+            lruCache.put(keyOf(info), data);
         }
     }
 
     public void removeInfo(@NonNull Info info) {
         if (DEBUG) Log.d(TAG, "removeInfo() called with: info = [" + info + "]");
         synchronized (lruCache) {
-            lruCache.remove(info.service_id + info.url);
+            lruCache.remove(keyOf(info));
         }
     }
 
     public void removeInfo(int serviceId, @NonNull String url) {
         if (DEBUG) Log.d(TAG, "removeInfo() called with: serviceId = [" + serviceId + "], url = [" + url + "]");
         synchronized (lruCache) {
-            lruCache.remove(serviceId + url);
+            lruCache.remove(keyOf(serviceId, url));
         }
     }
 
@@ -87,6 +91,7 @@ public final class InfoCache {
     public void trimCache() {
         if (DEBUG) Log.d(TAG, "trimCache() called");
         synchronized (lruCache) {
+            removeStaleCache(lruCache);
             lruCache.trimToSize(TRIM_CACHE_TO);
         }
     }
@@ -97,4 +102,51 @@ public final class InfoCache {
         }
     }
 
+    private static String keyOf(@NonNull final Info info) {
+        return keyOf(info.getServiceId(), info.getUrl());
+    }
+
+    private static String keyOf(final int serviceId, @NonNull final String url) {
+        return serviceId + url;
+    }
+
+    private static void removeStaleCache(@NonNull final LruCache<String, CacheData> cache) {
+        for (Map.Entry<String, CacheData> entry : cache.snapshot().entrySet()) {
+            final CacheData data = entry.getValue();
+            if (data != null && data.isExpired()) {
+                cache.remove(entry.getKey());
+            }
+        }
+    }
+
+    private static Info getInfo(@NonNull final LruCache<String, CacheData> cache,
+                                @NonNull final String key) {
+        final CacheData data = cache.get(key);
+        if (data == null) return null;
+
+        if (data.isExpired()) {
+            cache.remove(key);
+            return null;
+        }
+
+        return data.info;
+    }
+
+    final private static class CacheData {
+        final private long expireTimestamp;
+        final private Info info;
+
+        private CacheData(@NonNull final Info info,
+                          final long timeout,
+                          @NonNull final TimeUnit timeUnit) {
+            this.expireTimestamp = System.currentTimeMillis() +
+                    TimeUnit.MILLISECONDS.convert(timeout, timeUnit);
+
+            this.info = info;
+        }
+
+        private boolean isExpired() {
+            return System.currentTimeMillis() > expireTimestamp;
+        }
+    }
 }

app/src/main/java/org/schabi/newpipe/util/ListHelper.java

@@ -95,7 +95,7 @@ public final class ListHelper {
         int highestQualityIndex = 0;
         if (audioStreams.size() > 1) for (int i = 1; i < audioStreams.size(); i++) {
             AudioStream audioStream = audioStreams.get(i);
-            if (audioStream.average_bitrate >= audioStreams.get(highestQualityIndex).average_bitrate) highestQualityIndex = i;
+            if (audioStream.getAverageBitrate() >= audioStreams.get(highestQualityIndex).getAverageBitrate()) highestQualityIndex = i;
         }
         return highestQualityIndex;
     }
@@ -124,10 +124,10 @@ public final class ListHelper {
         int highestQualityIndex = -1;
         for (int i = 0; i < audioStreams.size(); i++) {
             AudioStream audioStream = audioStreams.get(i);
-            if (highestQualityIndex == -1 && audioStream.format == defaultFormat.id) highestQualityIndex = i;
+            if (highestQualityIndex == -1 && audioStream.getFormat() == defaultFormat) highestQualityIndex = i;
 
-            if (highestQualityIndex != -1 && audioStream.format == defaultFormat.id
-                    && audioStream.average_bitrate > audioStreams.get(highestQualityIndex).average_bitrate) {
+            if (highestQualityIndex != -1 && audioStream.getFormat() == defaultFormat
+                    && audioStream.getAverageBitrate() > audioStreams.get(highestQualityIndex).getAverageBitrate()) {
                 highestQualityIndex = i;
             }
         }
@@ -171,23 +171,23 @@ public final class ListHelper {
 
         if (videoOnlyStreams != null) {
             for (VideoStream stream : videoOnlyStreams) {
-                if (!showHigherResolutions && HIGH_RESOLUTION_LIST.contains(stream.resolution)) continue;
+                if (!showHigherResolutions && HIGH_RESOLUTION_LIST.contains(stream.getResolution())) continue;
                 retList.add(stream);
             }
         }
         if (videoStreams != null) {
             for (VideoStream stream : videoStreams) {
-                if (!showHigherResolutions && HIGH_RESOLUTION_LIST.contains(stream.resolution)) continue;
+                if (!showHigherResolutions && HIGH_RESOLUTION_LIST.contains(stream.getResolution())) continue;
                 retList.add(stream);
             }
         }
 
         // Add all to the hashmap
-        for (VideoStream videoStream : retList) hashMap.put(videoStream.resolution, videoStream);
+        for (VideoStream videoStream : retList) hashMap.put(videoStream.getResolution(), videoStream);
 
         // Override the values when the key == resolution, with the defaultFormat
         for (VideoStream videoStream : retList) {
-            if (videoStream.format == defaultFormat.id) hashMap.put(videoStream.resolution, videoStream);
+            if (videoStream.getFormat() == defaultFormat) hashMap.put(videoStream.getResolution(), videoStream);
         }
 
         retList.clear();
@@ -219,8 +219,8 @@ public final class ListHelper {
         Collections.sort(videoStreams, new Comparator<VideoStream>() {
             @Override
             public int compare(VideoStream o1, VideoStream o2) {
-                int res1 = Integer.parseInt(o1.resolution.replace("0p60", "1").replaceAll("[^\\d.]", ""));
-                int res2 = Integer.parseInt(o2.resolution.replace("0p60", "1").replaceAll("[^\\d.]", ""));
+                int res1 = Integer.parseInt(o1.getResolution().replace("0p60", "1").replaceAll("[^\\d.]", ""));
+                int res2 = Integer.parseInt(o2.getResolution().replace("0p60", "1").replaceAll("[^\\d.]", ""));
 
                 return ascendingOrder ? res1 - res2 : res2 - res1;
             }
@@ -235,9 +235,9 @@ public final class ListHelper {
         int defaultStreamIndex = -1;
         for (int i = 0; i < videoStreams.size(); i++) {
             VideoStream stream = videoStreams.get(i);
-            if (defaultStreamIndex == -1 && stream.resolution.equals(defaultResolution)) defaultStreamIndex = i;
+            if (defaultStreamIndex == -1 && stream.getResolution().equals(defaultResolution)) defaultStreamIndex = i;
 
-            if (stream.format == defaultFormat.id && stream.resolution.equals(defaultResolution)) {
+            if (stream.getFormat() == defaultFormat && stream.getResolution().equals(defaultResolution)) {
                 return i;
             }
         }

app/src/main/java/org/schabi/newpipe/util/NavigationHelper.java

@@ -5,10 +5,13 @@ import android.content.ActivityNotFoundException;
 import android.content.Context;
 import android.content.Intent;
 import android.net.Uri;
+import android.os.Build;
 import android.preference.PreferenceManager;
 import android.support.v4.app.Fragment;
 import android.support.v4.app.FragmentManager;
-import android.support.v7.app.AppCompatActivity;
+import android.support.v7.app.AlertDialog;
+import android.util.Log;
+import android.widget.Toast;
 
 import com.nostra13.universalimageloader.core.ImageLoader;
 
@@ -20,6 +23,10 @@ import org.schabi.newpipe.extractor.NewPipe;
 import org.schabi.newpipe.extractor.ServiceList;
 import org.schabi.newpipe.extractor.StreamingService;
 import org.schabi.newpipe.extractor.exceptions.ExtractionException;
+import org.schabi.newpipe.extractor.stream.AudioStream;
+import org.schabi.newpipe.extractor.stream.Stream;
+import org.schabi.newpipe.extractor.stream.StreamInfo;
+import org.schabi.newpipe.extractor.stream.VideoStream;
 import org.schabi.newpipe.fragments.MainFragment;
 import org.schabi.newpipe.fragments.detail.VideoDetailFragment;
 import org.schabi.newpipe.fragments.list.channel.ChannelFragment;
@@ -28,18 +35,28 @@ import org.schabi.newpipe.fragments.list.kiosk.KioskFragment;
 import org.schabi.newpipe.fragments.list.playlist.PlaylistFragment;
 import org.schabi.newpipe.fragments.list.search.SearchFragment;
 import org.schabi.newpipe.history.HistoryActivity;
+import org.schabi.newpipe.player.BackgroundPlayer;
+import org.schabi.newpipe.player.BackgroundPlayerActivity;
 import org.schabi.newpipe.player.BasePlayer;
+import org.schabi.newpipe.player.MainVideoPlayer;
+import org.schabi.newpipe.player.PopupVideoPlayer;
+import org.schabi.newpipe.player.PopupVideoPlayerActivity;
 import org.schabi.newpipe.player.VideoPlayer;
+import org.schabi.newpipe.player.old.PlayVideoActivity;
 import org.schabi.newpipe.playlist.PlayQueue;
 import org.schabi.newpipe.settings.SettingsActivity;
 
+import java.util.ArrayList;
+
 @SuppressWarnings({"unused", "WeakerAccess"})
 public class NavigationHelper {
     public static final String MAIN_FRAGMENT_TAG = "main_fragment_tag";
+    public static final String SEARCH_FRAGMENT_TAG = "search_fragment_tag";
 
     /*//////////////////////////////////////////////////////////////////////////
     // Players
     //////////////////////////////////////////////////////////////////////////*/
+
     public static Intent getPlayerIntent(final Context context,
                                          final Class targetClazz,
                                          final PlayQueue playQueue,
@@ -59,9 +76,11 @@ public class NavigationHelper {
 
     public static Intent getPlayerEnqueueIntent(final Context context,
                                                 final Class targetClazz,
-                                                final PlayQueue playQueue) {
+                                                final PlayQueue playQueue,
+                                                final boolean selectOnAppend) {
         return getPlayerIntent(context, targetClazz, playQueue)
-                .putExtra(BasePlayer.APPEND_ONLY, true);
+                .putExtra(BasePlayer.APPEND_ONLY, true)
+                .putExtra(BasePlayer.SELECT_ON_APPEND, selectOnAppend);
     }
 
     public static Intent getPlayerIntent(final Context context,
@@ -77,6 +96,133 @@ public class NavigationHelper {
                 .putExtra(BasePlayer.PLAYBACK_PITCH, playbackPitch);
     }
 
+    public static void playOnMainPlayer(final Context context, final PlayQueue queue) {
+        final Intent playerIntent = getPlayerIntent(context, MainVideoPlayer.class, queue);
+        playerIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+        context.startActivity(playerIntent);
+    }
+
+    public static void playOnOldVideoPlayer(Context context, StreamInfo info) {
+        ArrayList<VideoStream> videoStreamsList = new ArrayList<>(ListHelper.getSortedStreamVideosList(context, info.getVideoStreams(), null, false));
+        int index = ListHelper.getDefaultResolutionIndex(context, videoStreamsList);
+
+        if (index == -1) {
+            Toast.makeText(context, R.string.video_streams_empty, Toast.LENGTH_SHORT).show();
+            return;
+        }
+
+        VideoStream videoStream = videoStreamsList.get(index);
+        Intent intent = new Intent(context, PlayVideoActivity.class)
+                .addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
+                .putExtra(PlayVideoActivity.VIDEO_TITLE, info.getName())
+                .putExtra(PlayVideoActivity.STREAM_URL, videoStream.getUrl())
+                .putExtra(PlayVideoActivity.VIDEO_URL, info.getUrl())
+                .putExtra(PlayVideoActivity.START_POSITION, info.getStartPosition());
+
+        context.startActivity(intent);
+    }
+
+    public static void playOnPopupPlayer(final Context context, final PlayQueue queue) {
+        if (!PermissionHelper.isPopupEnabled(context)) {
+            PermissionHelper.showPopupEnablementToast(context);
+            return;
+        }
+
+        Toast.makeText(context, R.string.popup_playing_toast, Toast.LENGTH_SHORT).show();
+        context.startService(getPlayerIntent(context, PopupVideoPlayer.class, queue));
+    }
+
+    public static void playOnBackgroundPlayer(final Context context, final PlayQueue queue) {
+        Toast.makeText(context, R.string.background_player_playing_toast, Toast.LENGTH_SHORT).show();
+        context.startService(getPlayerIntent(context, BackgroundPlayer.class, queue));
+    }
+
+    public static void enqueueOnPopupPlayer(final Context context, final PlayQueue queue) {
+        enqueueOnPopupPlayer(context, queue, false);
+    }
+
+    public static void enqueueOnPopupPlayer(final Context context, final PlayQueue queue, boolean selectOnAppend) {
+        if (!PermissionHelper.isPopupEnabled(context)) {
+            PermissionHelper.showPopupEnablementToast(context);
+            return;
+        }
+
+        Toast.makeText(context, R.string.popup_playing_append, Toast.LENGTH_SHORT).show();
+        context.startService(getPlayerEnqueueIntent(context, PopupVideoPlayer.class, queue, selectOnAppend));
+    }
+
+    public static void enqueueOnBackgroundPlayer(final Context context, final PlayQueue queue) {
+        enqueueOnBackgroundPlayer(context, queue, false);
+    }
+
+    public static void enqueueOnBackgroundPlayer(final Context context, final PlayQueue queue, boolean selectOnAppend) {
+        Toast.makeText(context, R.string.background_player_append, Toast.LENGTH_SHORT).show();
+        context.startService(getPlayerEnqueueIntent(context, BackgroundPlayer.class, queue, selectOnAppend));
+    }
+
+    /*//////////////////////////////////////////////////////////////////////////
+    // External Players
+    //////////////////////////////////////////////////////////////////////////*/
+
+    public static void playOnExternalAudioPlayer(Context context, StreamInfo info) {
+        final int index = ListHelper.getDefaultAudioFormat(context, info.getAudioStreams());
+
+        if (index == -1) {
+            Toast.makeText(context, R.string.audio_streams_empty, Toast.LENGTH_SHORT).show();
+            return;
+        }
+
+        AudioStream audioStream = info.getAudioStreams().get(index);
+        playOnExternalPlayer(context, info.getName(), info.getUploaderName(), audioStream);
+    }
+
+    public static void playOnExternalVideoPlayer(Context context, StreamInfo info) {
+        ArrayList<VideoStream> videoStreamsList = new ArrayList<>(ListHelper.getSortedStreamVideosList(context, info.getVideoStreams(), null, false));
+        int index = ListHelper.getDefaultResolutionIndex(context, videoStreamsList);
+
+        if (index == -1) {
+            Toast.makeText(context, R.string.video_streams_empty, Toast.LENGTH_SHORT).show();
+            return;
+        }
+
+        VideoStream videoStream = videoStreamsList.get(index);
+        playOnExternalPlayer(context, info.getName(), info.getUploaderName(), videoStream);
+    }
+
+    public static void playOnExternalPlayer(Context context, String name, String artist, Stream stream) {
+        Intent intent = new Intent();
+        intent.setAction(Intent.ACTION_VIEW);
+        intent.setDataAndType(Uri.parse(stream.getUrl()), stream.getFormat().getMimeType());
+        intent.putExtra(Intent.EXTRA_TITLE, name);
+        intent.putExtra("title", name);
+        intent.putExtra("artist", artist);
+        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+
+        resolveActivityOrAskToInstall(context, intent);
+    }
+
+    public static void resolveActivityOrAskToInstall(Context context, Intent intent) {
+        if (intent.resolveActivity(context.getPackageManager()) != null) {
+            context.startActivity(intent);
+        } else {
+            if (context instanceof Activity) {
+                new AlertDialog.Builder(context)
+                        .setMessage(R.string.no_player_found)
+                        .setPositiveButton(R.string.install, (dialog, which) -> {
+                            Intent i = new Intent();
+                            i.setAction(Intent.ACTION_VIEW);
+                            i.setData(Uri.parse(context.getString(R.string.fdroid_vlc_url)));
+                            context.startActivity(i);
+                        })
+                        .setNegativeButton(R.string.cancel, (dialog, which) -> Log.i("NavigationHelper", "You unlocked a secret unicorn."))
+                        .show();
+                //Log.e("NavigationHelper", "Either no Streaming player for audio was installed, or something important crashed:");
+            } else {
+                Toast.makeText(context, R.string.no_player_found_toast, Toast.LENGTH_LONG).show();
+            }
+        }
+    }
+
     /*//////////////////////////////////////////////////////////////////////////
     // Through FragmentManager
     //////////////////////////////////////////////////////////////////////////*/
@@ -99,11 +245,21 @@ public class NavigationHelper {
                 .commit();
     }
 
+    public static boolean tryGotoSearchFragment(FragmentManager fragmentManager) {
+        if (MainActivity.DEBUG) {
+            for (int i = 0; i < fragmentManager.getBackStackEntryCount(); i++) {
+                Log.d("NavigationHelper", "tryGoToSearchFragment() [" + i + "] = [" + fragmentManager.getBackStackEntryAt(i) + "]");
+            }
+        }
+
+        return fragmentManager.popBackStackImmediate(SEARCH_FRAGMENT_TAG, 0);
+    }
+
     public static void openSearchFragment(FragmentManager fragmentManager, int serviceId, String query) {
         fragmentManager.beginTransaction()
                 .setCustomAnimations(R.animator.custom_fade_in, R.animator.custom_fade_out, R.animator.custom_fade_in, R.animator.custom_fade_out)
                 .replace(R.id.fragment_holder, SearchFragment.getInstance(serviceId, query))
-                .addToBackStack(null)
+                .addToBackStack(SEARCH_FRAGMENT_TAG)
                 .commit();
     }
 
@@ -230,23 +386,26 @@ public class NavigationHelper {
         return true;
     }
 
+    public static Intent getBackgroundPlayerActivityIntent(final Context context) {
+        return getServicePlayerActivityIntent(context, BackgroundPlayerActivity.class);
+    }
+
+    public static Intent getPopupPlayerActivityIntent(final Context context) {
+        return getServicePlayerActivityIntent(context, PopupVideoPlayerActivity.class);
+    }
+
+    private static Intent getServicePlayerActivityIntent(final Context context,
+                                                         final Class activityClass) {
+        Intent intent = new Intent(context, activityClass);
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.N) {
+            intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+        }
+        return intent;
+    }
     /*//////////////////////////////////////////////////////////////////////////
     // Link handling
     //////////////////////////////////////////////////////////////////////////*/
 
-    public static boolean openByLink(Context context, String url) {
-        Intent intentByLink;
-        try {
-            intentByLink = getIntentByLink(context, url);
-        } catch (ExtractionException e) {
-            return false;
-        }
-        intentByLink.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
-        intentByLink.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK);
-        context.startActivity(intentByLink);
-        return true;
-    }
-
     private static Intent getOpenIntent(Context context, String url, int serviceId, StreamingService.LinkType type) {
         Intent mIntent = new Intent(context, MainActivity.class);
         mIntent.putExtra(Constants.KEY_SERVICE_ID, serviceId);
@@ -264,15 +423,14 @@ public class NavigationHelper {
             throw new ExtractionException("Service not supported at the moment");
         }
 
-        int serviceId = service.getServiceId();
         StreamingService.LinkType linkType = service.getLinkTypeByUrl(url);
 
         if (linkType == StreamingService.LinkType.NONE) {
-            throw new ExtractionException("Url not known to service. service=" + serviceId + " url=" + url);
+            throw new ExtractionException("Url not known to service. service=" + service + " url=" + url);
         }
 
         url = getCleanUrl(service, url, linkType);
-        Intent rIntent = getOpenIntent(context, url, serviceId, linkType);
+        Intent rIntent = getOpenIntent(context, url, service.getServiceId(), linkType);
 
         switch (linkType) {
             case STREAM:
@@ -284,7 +442,7 @@ public class NavigationHelper {
         return rIntent;
     }
 
-    private static String getCleanUrl(StreamingService service, String dirtyUrl, StreamingService.LinkType linkType) throws ExtractionException {
+    public static String getCleanUrl(StreamingService service, String dirtyUrl, StreamingService.LinkType linkType) throws ExtractionException {
         switch (linkType) {
             case STREAM:
                 return service.getStreamUrlIdHandler().cleanUrl(dirtyUrl);
@@ -298,7 +456,6 @@ public class NavigationHelper {
         return null;
     }
 
-
     private static Uri openMarketUrl(String packageName) {
         return Uri.parse("market://details")
                 .buildUpon()

app/src/main/java/org/schabi/newpipe/util/PermissionHelper.java

@@ -11,11 +11,15 @@ import android.provider.Settings;
 import android.support.annotation.RequiresApi;
 import android.support.v4.app.ActivityCompat;
 import android.support.v4.content.ContextCompat;
+import android.view.Gravity;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import org.schabi.newpipe.R;
 
 public class PermissionHelper {
     public static final int PERMISSION_WRITE_STORAGE = 778;
     public static final int PERMISSION_READ_STORAGE = 777;
-    public static final int PERMISSION_SYSTEM_ALERT_WINDOW = 779;
 
 
     public static boolean checkStoragePermissions(Activity activity) {
@@ -75,21 +79,31 @@ public class PermissionHelper {
      * In order to be able to draw over other apps, the permission android.permission.SYSTEM_ALERT_WINDOW have to be granted.
      * <p>
      * On < API 23 (MarshMallow) the permission was granted when the user installed the application (via AndroidManifest),
-     * on > 23, however, it have to start a activity asking the user if he agree.
+     * on > 23, however, it have to start a activity asking the user if he agrees.
      * <p>
-     * This method just return if canDraw over other apps, if it doesn't, try to get the permission,
-     * it does not get the result of the startActivityForResult, if the user accept, the next time that he tries to open
-     * it will return true.
+     * This method just return if the app has permission to draw over other apps, and if it doesn't, it will try to get the permission.
      *
-     * @param activity context to startActivityForResult
      * @return returns {@link Settings#canDrawOverlays(Context)}
      **/
     @RequiresApi(api = Build.VERSION_CODES.M)
-    public static boolean checkSystemAlertWindowPermission(Activity activity) {
-        if (!Settings.canDrawOverlays(activity)) {
-            Intent i = new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION, Uri.parse("package:" + activity.getPackageName()));
-            activity.startActivityForResult(i, PERMISSION_SYSTEM_ALERT_WINDOW);
+    public static boolean checkSystemAlertWindowPermission(Context context) {
+        if (!Settings.canDrawOverlays(context)) {
+            Intent i = new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION, Uri.parse("package:" + context.getPackageName()));
+            i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+            context.startActivity(i);
             return false;
         }else return true;
     }
+
+    public static boolean isPopupEnabled(Context context) {
+        return Build.VERSION.SDK_INT < Build.VERSION_CODES.M ||
+                PermissionHelper.checkSystemAlertWindowPermission(context);
+    }
+
+    public static void showPopupEnablementToast(Context context) {
+        Toast toast = Toast.makeText(context, R.string.msg_popup_permission, Toast.LENGTH_LONG);
+        TextView messageView = toast.getView().findViewById(android.R.id.message);
+        if (messageView != null) messageView.setGravity(Gravity.CENTER);
+        toast.show();
+    }
 }

app/src/main/java/org/schabi/newpipe/util/PopupMenuIconHacker.java

@@ -0,0 +1,48 @@
+package org.schabi.newpipe.util;
+
+import android.widget.PopupMenu;
+
+import java.lang.reflect.Field;
+import java.lang.reflect.Method;
+
+/**
+ * Created by Christian Schabesberger on 20.01.18.
+ * Copyright 2018 Christian Schabesberger <chris.schabesberger@mailbox.org>
+ * PopupMenuIconHacker.java is part of NewPipe
+ *
+ * License: GPL-3.0+
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+public class PopupMenuIconHacker {
+    public static void setShowPopupIcon(PopupMenu menu) throws Exception {
+        try {
+            Field[] fields = menu.getClass().getDeclaredFields();
+            for (Field field : fields) {
+                if ("mPopup".equals(field.getName())) {
+                    field.setAccessible(true);
+                    Object menuPopupHelper = field.get(menu);
+                    Class<?> classPopupHelper = Class.forName(menuPopupHelper
+                            .getClass().getName());
+                    Method setForceIcons = classPopupHelper.getMethod(
+                            "setForceShowIcon", boolean.class);
+                    setForceIcons.invoke(menuPopupHelper, true);
+                    break;
+                }
+            }
+        } catch (Exception e) {
+            throw new Exception("Could not make Popup menu show Icons", e);
+        }
+    }
+}

app/src/main/java/org/schabi/newpipe/util/ServiceHelper.java

@@ -0,0 +1,67 @@
+package org.schabi.newpipe.util;
+
+import android.content.Context;
+import android.preference.PreferenceManager;
+import android.support.annotation.DrawableRes;
+
+import org.schabi.newpipe.BuildConfig;
+import org.schabi.newpipe.R;
+import org.schabi.newpipe.extractor.NewPipe;
+import org.schabi.newpipe.extractor.ServiceList;
+import org.schabi.newpipe.extractor.StreamingService;
+import org.schabi.newpipe.extractor.exceptions.ExtractionException;
+
+public class ServiceHelper {
+    private static final StreamingService DEFAULT_FALLBACK_SERVICE = ServiceList.YouTube.getService();
+
+    @DrawableRes
+    public static int getIcon(int serviceId) {
+        switch (serviceId) {
+            case 0:
+                return R.drawable.place_holder_youtube;
+            case 1:
+                return R.drawable.place_holder_circle;
+            default:
+                return R.drawable.service;
+        }
+    }
+
+    public static int getSelectedServiceId(Context context) {
+        if (BuildConfig.BUILD_TYPE.equals("release")) return DEFAULT_FALLBACK_SERVICE.getServiceId();
+
+        final String serviceName = PreferenceManager.getDefaultSharedPreferences(context)
+                .getString(context.getString(R.string.current_service_key), context.getString(R.string.default_service_value));
+
+        int serviceId;
+        try {
+            serviceId = NewPipe.getService(serviceName).getServiceId();
+        } catch (ExtractionException e) {
+            serviceId = DEFAULT_FALLBACK_SERVICE.getServiceId();
+        }
+
+        return serviceId;
+    }
+
+    public static void setSelectedServiceId(Context context, int serviceId) {
+        String serviceName;
+        try {
+            serviceName = NewPipe.getService(serviceId).getServiceInfo().name;
+        } catch (ExtractionException e) {
+            serviceName = DEFAULT_FALLBACK_SERVICE.getServiceInfo().name;
+        }
+
+        setSelectedServicePreferences(context, serviceName);
+    }
+
+    public static void setSelectedServiceId(Context context, String serviceName) {
+        int serviceId = NewPipe.getIdOfService(serviceName);
+        if (serviceId == -1) serviceName = DEFAULT_FALLBACK_SERVICE.getServiceInfo().name;
+
+        setSelectedServicePreferences(context, serviceName);
+    }
+
+    private static void setSelectedServicePreferences(Context context, String serviceName) {
+        PreferenceManager.getDefaultSharedPreferences(context).edit().
+                putString(context.getString(R.string.current_service_key), serviceName).apply();
+    }
+}

app/src/main/java/org/schabi/newpipe/util/ServiceIconMapper.java

@@ -1,35 +0,0 @@
-package org.schabi.newpipe.util;
-
-import org.schabi.newpipe.R;
-import org.schabi.newpipe.extractor.NewPipe;
-
-/**
- * Created by Chrsitian Schabesberger on 09.10.17.
- * ServiceIconMapper.java is part of NewPipe.
- *
- * NewPipe is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * NewPipe is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with NewPipe.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-public class ServiceIconMapper {
-    public static int getIconResource(int service_id) {
-        switch(service_id) {
-            case 0:
-                return R.drawable.youtube;
-            case 1:
-                return R.drawable.soud_cloud;
-            default:
-                return R.drawable.service;
-        }
-    }
-}

app/src/main/java/org/schabi/newpipe/util/ThemeHelper.java

@@ -1,29 +1,38 @@
 package org.schabi.newpipe.util;
 
 import android.content.Context;
+import android.content.res.TypedArray;
 import android.preference.PreferenceManager;
+import android.support.annotation.AttrRes;
+import android.support.annotation.StyleRes;
 
 import org.schabi.newpipe.R;
+import org.schabi.newpipe.extractor.NewPipe;
+import org.schabi.newpipe.extractor.StreamingService;
+import org.schabi.newpipe.extractor.exceptions.ExtractionException;
 
 public class ThemeHelper {
 
     /**
      * Apply the selected theme (on NewPipe settings) in the context
+     * with the default style (see {@link #setTheme(Context, int)}).
      *
      * @param context context that the theme will be applied
      */
     public static void setTheme(Context context) {
-        String lightTheme = context.getResources().getString(R.string.light_theme_key);
-        String darkTheme = context.getResources().getString(R.string.dark_theme_key);
-        String blackTheme = context.getResources().getString(R.string.black_theme_key);
+        setTheme(context, -1);
+    }
 
-        String selectedTheme = getSelectedTheme(context);
-
-        if (selectedTheme.equals(lightTheme)) context.setTheme(R.style.LightTheme);
-        else if (selectedTheme.equals(blackTheme)) context.setTheme(R.style.BlackTheme);
-        else if (selectedTheme.equals(darkTheme)) context.setTheme(R.style.DarkTheme);
-            // Fallback
-        else context.setTheme(R.style.DarkTheme);
+    /**
+     * Apply the selected theme (on NewPipe settings) in the context,
+     * themed according with the styles defined for the service .
+     *
+     * @param context   context that the theme will be applied
+     * @param serviceId the theme will be styled to the service with this id,
+     *                  pass -1 to get the default style
+     */
+    public static void setTheme(Context context, int serviceId) {
+        context.setTheme(getThemeForService(context, serviceId));
     }
 
     /**
@@ -35,9 +44,73 @@ public class ThemeHelper {
         return getSelectedTheme(context).equals(context.getResources().getString(R.string.light_theme_key));
     }
 
+    @StyleRes
+    public static int getThemeForService(Context context, int serviceId) {
+        String lightTheme = context.getResources().getString(R.string.light_theme_key);
+        String darkTheme = context.getResources().getString(R.string.dark_theme_key);
+        String blackTheme = context.getResources().getString(R.string.black_theme_key);
+
+        String selectedTheme = getSelectedTheme(context);
+
+        int defaultTheme = R.style.DarkTheme;
+        if (selectedTheme.equals(lightTheme)) defaultTheme = R.style.LightTheme;
+        else if (selectedTheme.equals(blackTheme)) defaultTheme = R.style.BlackTheme;
+        else if (selectedTheme.equals(darkTheme)) defaultTheme = R.style.DarkTheme;
+
+        if (serviceId <= -1) {
+            return defaultTheme;
+        }
+
+        final StreamingService service;
+        try {
+            service = NewPipe.getService(serviceId);
+        } catch (ExtractionException ignored) {
+            return defaultTheme;
+        }
+
+        String themeName = "DarkTheme";
+        if (selectedTheme.equals(lightTheme)) themeName = "LightTheme";
+        else if (selectedTheme.equals(blackTheme)) themeName = "BlackTheme";
+        else if (selectedTheme.equals(darkTheme)) themeName = "DarkTheme";
+
+        themeName += "." + service.getServiceInfo().name;
+        int resourceId = context.getResources().getIdentifier(themeName, "style", context.getPackageName());
+
+        if (resourceId > 0) {
+            return resourceId;
+        }
+
+        return defaultTheme;
+    }
+
     public static String getSelectedTheme(Context context) {
         String themeKey = context.getString(R.string.theme_key);
         String defaultTheme = context.getResources().getString(R.string.default_theme_value);
         return PreferenceManager.getDefaultSharedPreferences(context).getString(themeKey, defaultTheme);
     }
+
+    @StyleRes
+    public static int getSettingsThemeStyle(Context context) {
+        String lightTheme = context.getResources().getString(R.string.light_theme_key);
+        String darkTheme = context.getResources().getString(R.string.dark_theme_key);
+        String blackTheme = context.getResources().getString(R.string.black_theme_key);
+
+        String selectedTheme = getSelectedTheme(context);
+
+        if (selectedTheme.equals(lightTheme)) return R.style.LightSettingsTheme;
+        else if (selectedTheme.equals(blackTheme)) return R.style.BlackSettingsTheme;
+        else if (selectedTheme.equals(darkTheme)) return R.style.DarkSettingsTheme;
+            // Fallback
+        else return R.style.DarkSettingsTheme;
+    }
+
+    /**
+     * Get a resource id from a resource styled according to the the context's theme.
+     */
+    public static int resolveResourceIdFromAttr(Context context, @AttrRes int attr) {
+        TypedArray a = context.getTheme().obtainStyledAttributes(new int[]{attr});
+        int attributeResourceId = a.getResourceId(0, 0);
+        a.recycle();
+        return attributeResourceId;
+    }
 }

app/src/main/java/org/schabi/newpipe/util/ZipHelper.java

@@ -0,0 +1,94 @@
+package org.schabi.newpipe.util;
+
+import java.io.BufferedInputStream;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.util.zip.ZipEntry;
+import java.util.zip.ZipInputStream;
+import java.util.zip.ZipOutputStream;
+
+/**
+ * Created by Christian Schabesberger on 28.01.18.
+ * Copyright 2018 Christian Schabesberger <chris.schabesberger@mailbox.org>
+ * ZipHelper.java is part of NewPipe
+ *
+ * License: GPL-3.0+
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+public class ZipHelper {
+
+    private static final int BUFFER_SIZE = 2048;
+
+    /**
+     * This function helps to create zip files.
+     * Caution this will override the original file.
+     * @param outZip The ZipOutputStream where the data should be stored in
+     * @param file The path of the file that should be added to zip.
+     * @param name The path of the file inside the zip.
+     * @throws Exception
+     */
+    public static void addFileToZip(ZipOutputStream outZip, String file, String name) throws Exception {
+        byte data[] = new byte[BUFFER_SIZE];
+        FileInputStream fi = new FileInputStream(file);
+        BufferedInputStream inputStream = new BufferedInputStream(fi, BUFFER_SIZE);
+        ZipEntry entry = new ZipEntry(name);
+        outZip.putNextEntry(entry);
+        int count;
+        while((count = inputStream.read(data, 0, BUFFER_SIZE)) != -1) {
+            outZip.write(data, 0, count);
+        }
+        inputStream.close();
+    }
+
+    /**
+     * This will extract data from Zipfiles.
+     * Caution this will override the original file.
+     * @param inZip The ZipOutputStream where the data is stored in
+     * @param file The path of the file on the disk where the data should be extracted to.
+     * @param name The path of the file inside the zip.
+     * @return will return true if the file was found within the zip file
+     * @throws Exception
+     */
+    public static boolean extractFileFromZip(ZipInputStream inZip, String file, String name) throws Exception {
+        byte data[] = new byte[BUFFER_SIZE];
+
+        boolean found = false;
+
+        ZipEntry ze;
+        while((ze = inZip.getNextEntry()) != null) {
+            if(ze.getName().equals(name)) {
+                found = true;
+                // delete old file first
+                File oldFile = new File(file);
+                if(oldFile.exists()) {
+                    if(!oldFile.delete()) {
+                        throw new Exception("Could not delete " + file);
+                    }
+                }
+
+                FileOutputStream outFile = new FileOutputStream(file);
+                int count = 0;
+                while((count = inZip.read(data)) != -1) {
+                    outFile.write(data, 0, count);
+                }
+
+                outFile.close();
+                inZip.closeEntry();
+            }
+        }
+        return true;
+    }
+}

app/src/main/java/us/shandian/giga/service/DownloadManagerService.java

@@ -6,8 +6,8 @@ import android.app.PendingIntent;
 import android.app.Service;
 import android.content.Context;
 import android.content.Intent;
-import android.graphics.drawable.BitmapDrawable;
-import android.graphics.drawable.Drawable;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
 import android.net.Uri;
 import android.os.Binder;
 import android.os.Handler;
@@ -15,7 +15,6 @@ import android.os.HandlerThread;
 import android.os.IBinder;
 import android.os.Message;
 import android.support.v4.app.NotificationCompat.Builder;
-import android.support.v4.content.ContextCompat;
 import android.support.v4.content.PermissionChecker;
 import android.util.Log;
 import android.widget.Toast;
@@ -96,12 +95,12 @@ public class DownloadManagerService extends Service {
                 openDownloadListIntent,
                 PendingIntent.FLAG_UPDATE_CURRENT);
 
-        Drawable icon = ContextCompat.getDrawable(this, R.mipmap.ic_launcher);
+        Bitmap iconBitmap = BitmapFactory.decodeResource(this.getResources(), R.mipmap.ic_launcher);
 
         Builder builder = new Builder(this, getString(R.string.notification_channel_id))
                 .setContentIntent(pendingIntent)
                 .setSmallIcon(android.R.drawable.stat_sys_download)
-                .setLargeIcon(((BitmapDrawable) icon).getBitmap())
+                .setLargeIcon(iconBitmap)
                 .setContentTitle(getString(R.string.msg_running))
                 .setContentText(getString(R.string.msg_running_detail));
 

app/src/main/res/anim/switch_service_in.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<set xmlns:android="http://schemas.android.com/apk/res/android"
+     android:interpolator="@android:interpolator/decelerate_quint">
+
+    <alpha
+        android:duration="150"
+        android:fromAlpha="0.00"
+        android:toAlpha="1.0"/>
+</set>

app/src/main/res/anim/switch_service_out.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<set xmlns:android="http://schemas.android.com/apk/res/android"
+     android:interpolator="@android:interpolator/accelerate_quint">
+
+    <alpha
+        android:duration="350"
+        android:fromAlpha="1.0"
+        android:toAlpha="0.00"/>
+</set>