move on to v0.8.10

Currently translated at 100.0% (149 of 149 strings)

.github/CONTRIBUTING.md

@@ -13,6 +13,9 @@ Do not report crashes in the GitHub issue tracker. NewPipe has an automated cras
 * Check if this issue/feature is already fixed/implemented in the repository
 * If you are an android/java developer you are always welcome to fix/implement an issue/a feature yourself
 
+## Bugfixing
+* If you want to help NewPipe getting bug free, you can send me a mail to tnp@newpipe.schabi.org to let me know that you intent to help, and than register at our [sentry](https://support.schabi.org) setup. 
+
 ## Translation
 
 * NewPipe can be translated on [weblate](https://hosted.weblate.org/projects/newpipe/strings/)
@@ -31,6 +34,6 @@ Do not report crashes in the GitHub issue tracker. NewPipe has an automated cras
 
 ## Communication
 
-* I hereby declare our Slack channel as dead!!! There are no plans on building a new chat, but if there is interest on creating one and keeping it alive, I'd be pleased to create one again. 
+* WE DO NOW HAVE A MAILING LIST: [newpipe@list.schabi.org](https://list.schabi.org/cgi-bin/mailman/listinfo/newpipe).
 * If you want to get in contact with me or one of our other contributors you can send me an email at tnp(at)schabi.org
 * Feel free to post suggestions, changes, ideas etc!

README.md

@@ -37,12 +37,12 @@ NewPipe does not use any Google framework libraries, or the YouTube API. It only
 * Listen to YouTube videos (experimental)
 * Select the streaming player to watch the video with
 * Download videos 
-* Download audio only 
-* Open a video in Kodi
+* Download audio only * Open a video in Kodi
 * Show Next/Related videos
 * Search YouTube in a specific language
 * Watch age restricted material
 * Display general information about channels
+* Search channels
 
 ### Coming Features
 
@@ -50,7 +50,6 @@ NewPipe does not use any Google framework libraries, or the YouTube API. It only
 * Bookmarks
 * View history
 * Search history
-* Search channels
 * Subscribe to channels
 * Watch videos from a channel
 * Search/Watch Playlists

app/build.gradle

@@ -8,8 +8,8 @@ android {
         applicationId "org.schabi.newpipe"
         minSdkVersion 15
         targetSdkVersion 25
-        versionCode 21
-        versionName "0.8.7"
+        versionCode 24
+        versionName "0.8.10"
     }
     buildTypes {
         release {
@@ -32,10 +32,10 @@ android {
 
 dependencies {
     testCompile 'junit:junit:4.12'
-    compile 'com.android.support:appcompat-v7:25.1.0'
-    compile 'com.android.support:support-v4:25.1.0'
-    compile 'com.android.support:design:25.1.0'
-    compile 'com.android.support:recyclerview-v7:25.1.0'
+    compile 'com.android.support:appcompat-v7:25.1.1'
+    compile 'com.android.support:support-v4:25.1.1'
+    compile 'com.android.support:design:25.1.1'
+    compile 'com.android.support:recyclerview-v7:25.1.1'
     compile 'org.jsoup:jsoup:1.8.3'
     compile 'org.mozilla:rhino:1.7.7'
     compile 'info.guardianproject.netcipher:netcipher:1.2'
@@ -45,6 +45,8 @@ dependencies {
     compile 'com.google.android.exoplayer:exoplayer:r1.5.5'
     compile 'com.google.code.gson:gson:2.4'
     compile 'com.nononsenseapps:filepicker:3.0.0'
-    testCompile 'junit:junit:4.12'
     compile 'ch.acra:acra:4.9.0'
+    testCompile 'junit:junit:4.12'
+    testCompile 'org.mockito:mockito-core:1.10.19'
+    testCompile 'org.json:json:20160810'
 }

app/src/androidTest/java/org/schabi/newpipe/extractor/youtube/YoutubeStreamExtractorLiveStreamTest.java

@@ -1,52 +0,0 @@
-package org.schabi.newpipe.extractor.youtube;
-
-import android.test.AndroidTestCase;
-
-
-import org.schabi.newpipe.extractor.exceptions.ExtractionException;
-import org.schabi.newpipe.extractor.exceptions.ParsingException;
-import org.schabi.newpipe.extractor.stream_info.StreamExtractor;
-
-import java.io.IOException;
-
-/**
- * Created by Christian Schabesberger on 11.03.16.
- *
- * Copyright (C) Christian Schabesberger 2016 <chris.schabesberger@mailbox.org>
- * YoutubeStreamExtractorLiveStreamTest.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 YoutubeStreamExtractorLiveStreamTest extends AndroidTestCase {
-
-    private StreamExtractor extractor;
-
-    public void setUp() throws IOException, ExtractionException {
-        //todo: make the extractor not throw over a livestream
-        /*
-
-        NewPipe.init(Downloader.getInstance());
-        extractor = NewPipe.getService("Youtube")
-                .getExtractorInstance("https://www.youtube.com/watch?v=J0s6NjqdjLE", Downloader.getInstance());
-                */
-    }
-
-    public void testStreamType() throws ParsingException {
-        assertTrue(true);
-        // assertTrue(extractor.getStreamType() == AbstractVideoInfo.StreamType.LIVE_STREAM);
-    }
-}
-

app/src/main/AndroidManifest.xml

@@ -156,11 +156,22 @@
         <activity
             android:name=".ChannelActivity"
             android:label="@string/title_activity_channel"
+            android:launchMode="singleTask"
             android:theme="@style/AppTheme.NoActionBar" />
 
         <activity
             android:name=".ReCaptchaActivity"
             android:label="@string/reCaptchaActivity" />
+
+        <provider
+            android:name="android.support.v4.content.FileProvider"
+            android:authorities="${applicationId}.provider"
+            android:exported="false"
+            android:grantUriPermissions="true">
+            <meta-data
+                android:name="android.support.FILE_PROVIDER_PATHS"
+                android:resource="@xml/provider_paths"/>
+        </provider>
     </application>
 
 </manifest>

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

@@ -48,6 +48,7 @@ public class App extends Application {
     @Override
     public void onCreate() {
         super.onCreate();
+
         // init crashreport
         try {
             final ACRAConfiguration acraConfig = new ConfigurationBuilder(this)

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

@@ -1,17 +1,24 @@
 package org.schabi.newpipe;
 
+import android.annotation.TargetApi;
+import android.content.Context;
 import android.content.Intent;
 import android.net.Uri;
+import android.os.Build;
 import android.os.Bundle;
 import android.os.Handler;
+import android.preference.PreferenceManager;
 import android.support.design.widget.CollapsingToolbarLayout;
 import android.support.design.widget.FloatingActionButton;
+import android.support.v4.content.ContextCompat;
 import android.support.v7.app.AppCompatActivity;
 import android.support.v7.widget.LinearLayoutManager;
 import android.support.v7.widget.RecyclerView;
 import android.support.v7.widget.Toolbar;
 import android.util.Log;
 import android.view.View;
+import android.view.Window;
+import android.view.WindowManager;
 import android.widget.ImageView;
 import android.widget.ProgressBar;
 import android.widget.Toast;
@@ -29,8 +36,13 @@ import org.schabi.newpipe.extractor.exceptions.ParsingException;
 import org.schabi.newpipe.info_list.InfoItemBuilder;
 import org.schabi.newpipe.info_list.InfoListAdapter;
 import org.schabi.newpipe.report.ErrorActivity;
+import org.schabi.newpipe.util.NavStack;
 
 import java.io.IOException;
+import java.util.Objects;
+
+import static android.os.Build.VERSION.SDK;
+import static android.os.Build.VERSION.SDK_INT;
 
 /**
  * Copyright (C) Christian Schabesberger 2016 <chris.schabesberger@mailbox.org>
@@ -51,15 +63,9 @@ import java.io.IOException;
  */
 
 public class ChannelActivity extends AppCompatActivity {
-
-
     private static final String TAG = ChannelActivity.class.toString();
     private View rootView = null;
 
-    // intent const
-    public static final String CHANNEL_URL = "channel_url";
-    public static final String SERVICE_ID = "service_id";
-
     private int serviceId = -1;
     private String channelUrl = "";
     private int pageNumber = 0;
@@ -72,27 +78,42 @@ public class ChannelActivity extends AppCompatActivity {
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
+
+        //since we set themeing we have to set translucent statusBar by hand
+        if (PreferenceManager.getDefaultSharedPreferences(this)
+                .getString("theme", getResources().getString(R.string.light_theme_title)).
+                        equals(getResources().getString(R.string.dark_theme_title)))  {
+            setTheme(R.style.DarkTheme_NoActionBar);
+        }
+        setTranslucentStatusBar(getWindow());
+
         setContentView(R.layout.activity_channel);
         Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
         rootView = findViewById(R.id.rootView);
         setSupportActionBar(toolbar);
-        Intent i = getIntent();
-        channelUrl = i.getStringExtra(CHANNEL_URL);
-        serviceId = i.getIntExtra(SERVICE_ID, -1);
+        if(savedInstanceState == null) {
+            Intent i = getIntent();
+            channelUrl = i.getStringExtra(NavStack.URL);
+            serviceId = i.getIntExtra(NavStack.SERVICE_ID, -1);
+        } else {
+            channelUrl = savedInstanceState.getString(NavStack.URL);
+            serviceId = savedInstanceState.getInt(NavStack.SERVICE_ID);
+            NavStack.getInstance()
+                    .restoreSavedInstanceState(savedInstanceState);
+        }
+
 
         infoListAdapter = new InfoListAdapter(this, rootView);
         RecyclerView recyclerView = (RecyclerView) findViewById(R.id.channel_streams_view);
         final LinearLayoutManager layoutManager = new LinearLayoutManager(this);
         recyclerView.setLayoutManager(layoutManager);
         recyclerView.setAdapter(infoListAdapter);
-        infoListAdapter.setOnItemSelectedListener(new InfoItemBuilder.OnItemSelectedListener() {
+        infoListAdapter.setOnStreamInfoItemSelectedListener(
+                new InfoItemBuilder.OnInfoItemSelectedListener() {
             @Override
-            public void selected(String url) {
-                Intent detailIntent = new Intent(ChannelActivity.this, VideoItemDetailActivity.class);
-                detailIntent.putExtra(VideoItemDetailFragment.VIDEO_URL, url);
-                detailIntent.putExtra(
-                        VideoItemDetailFragment.STREAMING_SERVICE, serviceId);
-                startActivity(detailIntent);
+            public void selected(String url, int serviceId) {
+                NavStack.getInstance()
+                        .openDetailActivity(ChannelActivity.this, url, serviceId);
             }
         });
 
@@ -122,13 +143,20 @@ public class ChannelActivity extends AppCompatActivity {
         requestData(false);
     }
 
-
+    @Override
+    public void onSaveInstanceState(Bundle outState) {
+        super.onSaveInstanceState(outState);
+        outState.putString(NavStack.URL, channelUrl);
+        outState.putInt(NavStack.SERVICE_ID, serviceId);
+        NavStack.getInstance()
+                .onSaveInstanceState(outState);
+    }
 
     private void updateUi(final ChannelInfo info) {
         CollapsingToolbarLayout ctl = (CollapsingToolbarLayout) findViewById(R.id.channel_toolbar_layout);
         ProgressBar progressBar = (ProgressBar) findViewById(R.id.progressBar);
         ImageView channelBanner = (ImageView) findViewById(R.id.channel_banner_image);
-        FloatingActionButton feedButton = (FloatingActionButton) findViewById(R.id.channel_rss_fab);
+        final FloatingActionButton feedButton = (FloatingActionButton) findViewById(R.id.channel_rss_fab);
         ImageView avatarView = (ImageView) findViewById(R.id.channel_avatar_view);
         ImageView haloView = (ImageView) findViewById(R.id.channel_avatar_halo);
 
@@ -165,7 +193,7 @@ public class ChannelActivity extends AppCompatActivity {
     }
 
     private void addVideos(final ChannelInfo info) {
-        infoListAdapter.addStreamItemList(info.related_streams);
+        infoListAdapter.addInfoItemList(info.related_streams);
     }
 
     private void postNewErrorToast(Handler h, final int stringResource) {
@@ -237,9 +265,13 @@ public class ChannelActivity extends AppCompatActivity {
                     });
                     pe.printStackTrace();
                 } catch(ExtractionException ex) {
+                    String name = "none";
+                    if(service != null) {
+                        name = service.getServiceInfo().name;
+                    }
                     ErrorActivity.reportError(h, ChannelActivity.this, ex, VideoItemDetailFragment.class, null,
                             ErrorActivity.ErrorInfo.make(ErrorActivity.REQUESTED_CHANNEL,
-                                    service.getServiceInfo().name, channelUrl, R.string.parsing_error));
+                                    name, channelUrl, R.string.parsing_error));
                     h.post(new Runnable() {
                         @Override
                         public void run() {
@@ -265,4 +297,38 @@ public class ChannelActivity extends AppCompatActivity {
         channelExtractorThread.start();
     }
 
+
+    // fix transparent statusbar fuckup (fuck google why can't they just leave something that worked
+    // as it is, and everyone gets happy)
+    public static void setTranslucentStatusBar(Window window) {
+        if (window == null) return;
+        int sdkInt = Build.VERSION.SDK_INT;
+        if (sdkInt >= Build.VERSION_CODES.LOLLIPOP) {
+            setTranslucentStatusBarLollipop(window);
+        } else if (sdkInt >= Build.VERSION_CODES.KITKAT) {
+            setTranslucentStatusBarKiKat(window);
+        }
+    }
+
+    @TargetApi(Build.VERSION_CODES.LOLLIPOP)
+    private static void setTranslucentStatusBarLollipop(Window window) {
+        window.setStatusBarColor(
+                ContextCompat.getColor(window.getContext(), android.R.color.transparent));
+    }
+
+    @TargetApi(Build.VERSION_CODES.KITKAT)
+    private static void setTranslucentStatusBarKiKat(Window window) {
+        window.addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
+    }
+
+    @Override
+    public void onBackPressed() {
+        try {
+            NavStack.getInstance()
+                    .navBack(this);
+        } catch (Exception e) {
+            ErrorActivity.reportUiError(this, e);
+        }
+    }
+
 }

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

@@ -4,13 +4,17 @@ import android.content.Intent;
 import android.media.AudioManager;
 import android.support.v4.app.Fragment;
 import android.support.v4.app.NavUtils;
-import android.support.v7.app.AppCompatActivity;
 import android.os.Bundle;
+import android.util.Log;
 import android.view.Menu;
 import android.view.MenuInflater;
 import android.view.MenuItem;
+import android.view.View;
+import android.widget.AdapterView;
 
+import org.schabi.newpipe.download.DownloadActivity;
 import org.schabi.newpipe.settings.SettingsActivity;
+import org.schabi.newpipe.util.PermissionHelper;
 
 /**
  * Created by Christian Schabesberger on 02.08.16.
@@ -32,15 +36,14 @@ import org.schabi.newpipe.settings.SettingsActivity;
  * along with NewPipe.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-public class MainActivity extends AppCompatActivity {
-
+public class MainActivity extends ThemableActivity {
     private Fragment mainFragment = null;
+    private static final String TAG = MainActivity.class.toString();
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
-
         setVolumeControlStream(AudioManager.STREAM_MUSIC);
         mainFragment = getSupportFragmentManager()
                 .findFragmentById(R.id.search_fragment);
@@ -52,8 +55,6 @@ public class MainActivity extends AppCompatActivity {
         MenuInflater inflater = getMenuInflater();
 
         inflater.inflate(R.menu.main_menu, menu);
-
-        mainFragment.onCreateOptionsMenu(menu, inflater);
         return true;
     }
 
@@ -61,7 +62,7 @@ public class MainActivity extends AppCompatActivity {
     public boolean onOptionsItemSelected(MenuItem item) {
         int id = item.getItemId();
 
-        switch(id) {
+        switch (id) {
             case android.R.id.home: {
                 Intent intent = new Intent(this, MainActivity.class);
                 intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
@@ -74,13 +75,20 @@ public class MainActivity extends AppCompatActivity {
                 return true;
             }
             case R.id.action_show_downloads: {
-                Intent intent = new Intent(this, org.schabi.newpipe.download.DownloadActivity.class);
+                if (!PermissionHelper.checkStoragePermissions(this)) {
+                    return false;
+                }
+                Intent intent = new Intent(this, DownloadActivity.class);
                 startActivity(intent);
                 return true;
             }
             default:
-                return mainFragment.onOptionsItemSelected(item) ||
-                        super.onOptionsItemSelected(item);
+                return super.onOptionsItemSelected(item);
         }
     }
+
+    @Override
+    public void onBackPressed() {
+        //ignore back
+    }
 }

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

@@ -0,0 +1,28 @@
+package org.schabi.newpipe;
+
+import android.os.Bundle;
+import android.preference.PreferenceManager;
+import android.support.v7.app.AppCompatActivity;
+
+public class ThemableActivity extends AppCompatActivity {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        if (PreferenceManager.getDefaultSharedPreferences(this)
+                    .getString("theme", getResources().getString(R.string.light_theme_title)).
+                            equals(getResources().getString(R.string.dark_theme_title)))  {
+                setTheme(R.style.DarkTheme);
+        }
+    }
+
+    @Override
+    protected void onResume() {
+        super.onResume();
+        if (PreferenceManager.getDefaultSharedPreferences(this)
+                .getString("theme", getResources().getString(R.string.light_theme_title)).
+                        equals(getResources().getString(R.string.dark_theme_title)))  {
+            setTheme(R.style.DarkTheme);
+        }
+    }
+}

app/src/main/java/org/schabi/newpipe/detail/StreamInfoWorker.java

@@ -125,10 +125,13 @@ public class StreamInfoWorker {
                 e.printStackTrace();
             } catch (YoutubeStreamExtractor.DecryptException de) {
                 // custom service related exceptions
+                ErrorActivity.reportError(h, a, de, VideoItemDetailFragment.class, null,
+                        ErrorActivity.ErrorInfo.make(ErrorActivity.REQUESTED_STREAM,
+                                service.getServiceInfo().name, videoUrl, R.string.youtube_signature_decryption_error));
                 h.post(new Runnable() {
                     @Override
                     public void run() {
-                        onStreamInfoReceivedListener.onError(R.string.youtube_signature_decryption_error);
+                        a.finish();
                     }
                 });
                 de.printStackTrace();

app/src/main/java/org/schabi/newpipe/detail/VideoItemDetailActivity.java

@@ -1,11 +1,11 @@
 package org.schabi.newpipe.detail;
 
+import android.content.Context;
 import android.content.Intent;
 import android.media.AudioManager;
 import android.os.Bundle;
 import android.preference.PreferenceManager;
 import android.support.v4.app.NavUtils;
-import android.support.v7.app.AppCompatActivity;
 import android.util.Log;
 import android.view.Menu;
 import android.view.MenuItem;
@@ -14,12 +14,17 @@ import android.widget.Toast;
 import org.schabi.newpipe.App;
 import org.schabi.newpipe.MainActivity;
 import org.schabi.newpipe.R;
+import org.schabi.newpipe.ThemableActivity;
 import org.schabi.newpipe.extractor.NewPipe;
 import org.schabi.newpipe.extractor.StreamingService;
+import org.schabi.newpipe.report.ErrorActivity;
+import org.schabi.newpipe.util.NavStack;
 
 import java.util.Collection;
 import java.util.HashSet;
 
+import static android.os.Build.VERSION.SDK_INT;
+
 
 /**
  * Copyright (C) Christian Schabesberger 2015 <chris.schabesberger@mailbox.org>
@@ -39,7 +44,7 @@ import java.util.HashSet;
  * along with NewPipe.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-public class VideoItemDetailActivity extends AppCompatActivity {
+public class VideoItemDetailActivity extends ThemableActivity {
 
     /**
      * Removes invisible separators (\p{Z}) and punctuation characters including
@@ -81,8 +86,10 @@ public class VideoItemDetailActivity extends AppCompatActivity {
         if (savedInstanceState == null) {
             handleIntent(getIntent());
         } else {
-            videoUrl = savedInstanceState.getString(VideoItemDetailFragment.VIDEO_URL);
-            currentStreamingService = savedInstanceState.getInt(VideoItemDetailFragment.STREAMING_SERVICE);
+            videoUrl = savedInstanceState.getString(NavStack.URL);
+            currentStreamingService = savedInstanceState.getInt(NavStack.SERVICE_ID);
+            NavStack.getInstance()
+                    .restoreSavedInstanceState(savedInstanceState);
             addFragment(savedInstanceState);
         }
     }
@@ -114,12 +121,12 @@ public class VideoItemDetailActivity extends AppCompatActivity {
             currentStreamingService = getServiceIdByUrl(videoUrl);
         } else {
             //this is if the video was called through another NewPipe activity
-            videoUrl = intent.getStringExtra(VideoItemDetailFragment.VIDEO_URL);
-            currentStreamingService = intent.getIntExtra(VideoItemDetailFragment.STREAMING_SERVICE, -1);
+            videoUrl = intent.getStringExtra(NavStack.URL);
+            currentStreamingService = intent.getIntExtra(NavStack.SERVICE_ID, -1);
         }
         arguments.putBoolean(VideoItemDetailFragment.AUTO_PLAY, autoplay);
-        arguments.putString(VideoItemDetailFragment.VIDEO_URL, videoUrl);
-        arguments.putInt(VideoItemDetailFragment.STREAMING_SERVICE, currentStreamingService);
+        arguments.putString(NavStack.URL, videoUrl);
+        arguments.putInt(NavStack.SERVICE_ID, currentStreamingService);
         addFragment(arguments);
     }
 
@@ -141,13 +148,17 @@ public class VideoItemDetailActivity extends AppCompatActivity {
 
     @Override
     public void onSaveInstanceState(Bundle outState) {
-        outState.putString(VideoItemDetailFragment.VIDEO_URL, videoUrl);
-        outState.putInt(VideoItemDetailFragment.STREAMING_SERVICE, currentStreamingService);
+        super.onSaveInstanceState(outState);
+        outState.putString(NavStack.URL, videoUrl);
+        outState.putInt(NavStack.SERVICE_ID, currentStreamingService);
         outState.putBoolean(VideoItemDetailFragment.AUTO_PLAY, false);
+        NavStack.getInstance()
+                .onSaveInstanceState(outState);
     }
 
     @Override
     public boolean onOptionsItemSelected(MenuItem item) {
+        super.onOptionsItemSelected(item);
         int id = item.getItemId();
         if (id == android.R.id.home) {
             // This ID represents the Home or Up button. In the case of this
@@ -157,24 +168,24 @@ public class VideoItemDetailActivity extends AppCompatActivity {
 
             // http://developer.android.com/design/patterns/navigation.html#up-vs-back
 
-            Intent intent = new Intent(this, MainActivity.class);
-            intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
-            NavUtils.navigateUpTo(this, intent);
+            NavStack.getInstance()
+                    .openMainActivity(this);
             return true;
         } else {
-            return fragment.onOptionsItemSelected(item) ||
-                    super.onOptionsItemSelected(item);
+            return super.onOptionsItemSelected(item);
         }
     }
 
     @Override
-    public boolean onCreateOptionsMenu(Menu menu) {
-        super.onCreateOptionsMenu(menu);
-        fragment.onCreateOptionsMenu(menu, getMenuInflater());
-        return true;
+    public void onBackPressed() {
+        try {
+            NavStack.getInstance()
+                    .navBack(this);
+        } catch (Exception e) {
+            ErrorActivity.reportUiError(this, e);
+        }
     }
 
-
     /**
      * Retrieves all Strings which look remotely like URLs from a text.
      * Used if NewPipe was called through share menu.
@@ -231,7 +242,7 @@ public class VideoItemDetailActivity extends AppCompatActivity {
         StreamingService[] serviceList = NewPipe.getServices();
         int service = -1;
         for (int i = 0; i < serviceList.length; i++) {
-            if (serviceList[i].getUrlIdHandlerInstance().acceptUrl(videoUrl)) {
+            if (serviceList[i].getStreamUrlIdHandlerInstance().acceptUrl(videoUrl)) {
                 service = i;
                 //videoExtractor = ServiceList.getService(i).getExtractorInstance();
                 break;

app/src/main/java/org/schabi/newpipe/detail/VideoItemDetailFragment.java

@@ -21,6 +21,7 @@ import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.Menu;
 import android.view.MenuInflater;
+import android.view.MenuItem;
 import android.view.MotionEvent;
 import android.view.View;
 import android.view.ViewGroup;
@@ -30,7 +31,6 @@ import android.widget.LinearLayout;
 import android.widget.ProgressBar;
 import android.widget.RelativeLayout;
 import android.widget.TextView;
-import android.view.MenuItem;
 import android.widget.Toast;
 
 import com.google.android.exoplayer.util.Util;
@@ -39,26 +39,27 @@ import com.nostra13.universalimageloader.core.ImageLoader;
 import com.nostra13.universalimageloader.core.assist.FailReason;
 import com.nostra13.universalimageloader.core.listener.ImageLoadingListener;
 
-import java.util.Vector;
-
 import org.schabi.newpipe.ActivityCommunicator;
-import org.schabi.newpipe.ChannelActivity;
-import org.schabi.newpipe.ReCaptchaActivity;
-import org.schabi.newpipe.extractor.stream_info.StreamInfo;
-import org.schabi.newpipe.extractor.stream_info.StreamPreviewInfo;
-import org.schabi.newpipe.info_list.InfoItemBuilder;
-import org.schabi.newpipe.report.ErrorActivity;
 import org.schabi.newpipe.ImageErrorLoadingListener;
 import org.schabi.newpipe.Localization;
 import org.schabi.newpipe.R;
+import org.schabi.newpipe.ReCaptchaActivity;
 import org.schabi.newpipe.download.DownloadDialog;
-import org.schabi.newpipe.extractor.stream_info.AudioStream;
+import org.schabi.newpipe.extractor.InfoItem;
 import org.schabi.newpipe.extractor.MediaFormat;
 import org.schabi.newpipe.extractor.NewPipe;
+import org.schabi.newpipe.extractor.stream_info.AudioStream;
+import org.schabi.newpipe.extractor.stream_info.StreamInfo;
 import org.schabi.newpipe.extractor.stream_info.VideoStream;
+import org.schabi.newpipe.info_list.InfoItemBuilder;
 import org.schabi.newpipe.player.BackgroundPlayer;
-import org.schabi.newpipe.player.PlayVideoActivity;
 import org.schabi.newpipe.player.ExoPlayerActivity;
+import org.schabi.newpipe.player.PlayVideoActivity;
+import org.schabi.newpipe.report.ErrorActivity;
+import java.util.Vector;
+
+import org.schabi.newpipe.util.NavStack;
+import org.schabi.newpipe.util.PermissionHelper;
 
 import static android.app.Activity.RESULT_OK;
 import static org.schabi.newpipe.ReCaptchaActivity.RECAPTCHA_REQUEST;
@@ -91,8 +92,6 @@ public class VideoItemDetailFragment extends Fragment {
      * The fragment argument representing the item ID that this fragment
      * represents.
      */
-    public static final String VIDEO_URL = "video_url";
-    public static final String STREAMING_SERVICE = "streaming_service";
     public static final String AUTO_PLAY = "auto_play";
 
     private AppCompatActivity activity;
@@ -144,6 +143,7 @@ public class VideoItemDetailFragment extends Fragment {
         TextView similarTitle = (TextView) activity.findViewById(R.id.detail_similar_title);
         Button backgroundButton = (Button)
                 activity.findViewById(R.id.detail_stream_thumbnail_window_background_button);
+        View thumbnailView = activity.findViewById(R.id.detail_thumbnail_view);
         View topView = activity.findViewById(R.id.detailTopView);
         Button channelButton = (Button) activity.findViewById(R.id.channel_button);
 
@@ -275,14 +275,20 @@ public class VideoItemDetailFragment extends Fragment {
                 }
             });
 
+            //todo: make backgroundButton handle this
+            thumbnailView.setOnClickListener(new View.OnClickListener() {
+                @Override
+                public void onClick(View v) {
+                    playVideo(info);
+                }
+            });
+
             if (info.channel_url != null && info.channel_url != "") {
                 channelButton.setOnClickListener(new View.OnClickListener() {
                     @Override
                     public void onClick(View view) {
-                        Intent i = new Intent(activity, ChannelActivity.class);
-                        i.putExtra(ChannelActivity.CHANNEL_URL, info.channel_url);
-                        i.putExtra(ChannelActivity.SERVICE_ID, info.service_id);
-                        startActivity(i);
+                        NavStack.getInstance()
+                                .openChannelActivity(getActivity(), info.channel_url, info.service_id);
                     }
                 });
             } else {
@@ -393,6 +399,10 @@ public class VideoItemDetailFragment extends Fragment {
         actionBarHandler.setOnDownloadListener(new ActionBarHandler.OnActionListener() {
             @Override
             public void onActionSelected(int selectedStreamId) {
+                if(!PermissionHelper.checkStoragePermissions(getActivity())) {
+                    return;
+                }
+
                 try {
                     Bundle args = new Bundle();
 
@@ -523,13 +533,15 @@ public class VideoItemDetailFragment extends Fragment {
 
     private void initSimilarVideos(final StreamInfo info) {
         LinearLayout similarLayout = (LinearLayout) activity.findViewById(R.id.similar_streams_view);
-        for (final StreamPreviewInfo item : info.related_streams) {
+        for (final InfoItem item : info.related_streams) {
             similarLayout.addView(infoItemBuilder.buildView(similarLayout, item));
         }
-        infoItemBuilder.setOnItemSelectedListener(new InfoItemBuilder.OnItemSelectedListener() {
+        infoItemBuilder.setOnStreamInfoItemSelectedListener(
+                new InfoItemBuilder.OnInfoItemSelectedListener() {
             @Override
-            public void selected(String url) {
-                openStreamUrl(url);
+            public void selected(String url, int serviceId) {
+                NavStack.getInstance()
+                        .openDetailActivity(getContext(), url, serviceId);
             }
         });
     }
@@ -629,6 +641,7 @@ public class VideoItemDetailFragment extends Fragment {
                 onNotSpecifiedContentError();
             }
         });
+        setHasOptionsMenu(true);
     }
 
     @Override
@@ -647,10 +660,9 @@ public class VideoItemDetailFragment extends Fragment {
     }
 
     @Override
-    public void onActivityCreated(Bundle savedInstanceBundle) {
-        super.onActivityCreated(savedInstanceBundle);
+    public void onStart() {
+        super.onStart();
         Activity a = getActivity();
-
         infoItemBuilder = new InfoItemBuilder(a, a.findViewById(android.R.id.content));
 
         if (android.os.Build.VERSION.SDK_INT < 18) {
@@ -664,8 +676,8 @@ public class VideoItemDetailFragment extends Fragment {
         // then we must not try to access objects of this fragment.
         // Otherwise the applications would crash.
         if(backgroundButton != null) {
-            streamingServiceId = getArguments().getInt(STREAMING_SERVICE);
-            String videoUrl = getArguments().getString(VIDEO_URL);
+            streamingServiceId = getArguments().getInt(NavStack.SERVICE_ID);
+            String videoUrl = getArguments().getString(NavStack.URL);
             StreamInfoWorker siw = StreamInfoWorker.getInstance();
             siw.search(streamingServiceId, videoUrl, getActivity());
 
@@ -779,11 +791,13 @@ public class VideoItemDetailFragment extends Fragment {
 
     @Override
     public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
+        super.onCreateOptionsMenu(menu, inflater);
         actionBarHandler.setupMenu(menu, inflater);
     }
 
     @Override
     public boolean onOptionsItemSelected(MenuItem item) {
+        super.onOptionsItemSelected(item);
         return actionBarHandler.onItemSelected(item);
     }
 
@@ -796,20 +810,13 @@ public class VideoItemDetailFragment extends Fragment {
                 stringResource, Toast.LENGTH_LONG).show();
     }
 
-    private void openStreamUrl(String url) {
-        Intent detailIntent = new Intent(activity, VideoItemDetailActivity.class);
-        detailIntent.putExtra(VideoItemDetailFragment.VIDEO_URL, url);
-        detailIntent.putExtra(
-                VideoItemDetailFragment.STREAMING_SERVICE, streamingServiceId);
-        activity.startActivity(detailIntent);
-    }
-
     @Override
     public void onActivityResult(int requestCode, int resultCode, Intent data) {
+        super.onActivityResult(requestCode, resultCode, data);
         switch (requestCode) {
             case RECAPTCHA_REQUEST:
                 if (resultCode == RESULT_OK) {
-                    String videoUrl = getArguments().getString(VIDEO_URL);
+                    String videoUrl = getArguments().getString(NavStack.URL);
                     StreamInfoWorker siw = StreamInfoWorker.getInstance();
                     siw.search(streamingServiceId, videoUrl, getActivity());
                 } else {

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

@@ -13,8 +13,8 @@ import android.os.IBinder;
 import android.preference.PreferenceManager;
 import android.support.v4.app.NavUtils;
 import android.support.v7.app.ActionBar;
-import android.support.v7.app.AppCompatActivity;
 import android.support.v7.widget.Toolbar;
+import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.Menu;
 import android.view.MenuInflater;
@@ -28,8 +28,10 @@ import android.widget.SeekBar;
 import android.widget.TextView;
 import android.widget.Toast;
 
+import org.schabi.newpipe.ThemableActivity;
 import org.schabi.newpipe.report.ErrorActivity;
 import org.schabi.newpipe.R;
+import org.schabi.newpipe.settings.NewPipeSettings;
 import org.schabi.newpipe.settings.SettingsActivity;
 
 import java.io.File;
@@ -42,7 +44,7 @@ import us.shandian.giga.ui.fragment.MissionsFragment;
 import us.shandian.giga.util.CrashHandler;
 import us.shandian.giga.util.Utility;
 
-public class DownloadActivity extends AppCompatActivity implements AdapterView.OnItemClickListener{
+public class DownloadActivity extends ThemableActivity implements AdapterView.OnItemClickListener{
 
     public static final String INTENT_DOWNLOAD = "us.shandian.giga.intent.DOWNLOAD";
 
@@ -53,26 +55,11 @@ public class DownloadActivity extends AppCompatActivity implements AdapterView.O
 
 
     private MissionsFragment mFragment;
-    private DownloadManager mManager;
-    private DownloadManagerService.DMBinder mBinder;
+
 
     private String mPendingUrl;
     private SharedPreferences mPrefs;
 
-    private ServiceConnection mConnection = new ServiceConnection() {
-
-        @Override
-        public void onServiceConnected(ComponentName p1, IBinder binder) {
-            mBinder = (DownloadManagerService.DMBinder) binder;
-            mManager = mBinder.getDownloadManager();
-        }
-
-        @Override
-        public void onServiceDisconnected(ComponentName p1) {
-
-        }
-    };
-
     @Override
     @TargetApi(21)
     protected void onCreate(Bundle savedInstanceState) {
@@ -83,7 +70,6 @@ public class DownloadActivity extends AppCompatActivity implements AdapterView.O
         Intent i = new Intent();
         i.setClass(this, DownloadManagerService.class);
         startService(i);
-        bindService(i, mConnection, Context.BIND_AUTO_CREATE);
 
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_downloader);
@@ -91,7 +77,7 @@ public class DownloadActivity extends AppCompatActivity implements AdapterView.O
 
         //noinspection ConstantConditions
 
-        // its ok if this failes, we will catch that error later, and send it as report
+        // its ok if this fails, we will catch that error later, and send it as report
         ActionBar actionBar = getSupportActionBar();
         actionBar.setDisplayHomeAsUpEnabled(true);
         actionBar.setTitle(R.string.downloads_title);
@@ -202,22 +188,24 @@ public class DownloadActivity extends AppCompatActivity implements AdapterView.O
             @Override
             public boolean onMenuItemClick(MenuItem item) {
                 if (item.getItemId() == R.id.okay) {
+
+                    String location;
+                    if(audioButton.isChecked()) {
+                        location = NewPipeSettings.getAudioDownloadPath(DownloadActivity.this);
+                    } else {
+                        location = NewPipeSettings.getVideoDownloadPath(DownloadActivity.this);
+                    }
+
                     String fName = name.getText().toString().trim();
 
-                    File f = new File(mManager.getLocation() + "/" + fName);
-
+                    File f = new File(location, fName);
                     if (f.exists()) {
                         Toast.makeText(DownloadActivity.this, R.string.msg_exists, Toast.LENGTH_SHORT).show();
                     } else {
-
-                        while (mBinder == null);
-
-                        int res = mManager.startMission(
-                                getIntent().getData().toString(),
-                                fName,
-                                audioButton.isChecked(),
-                                threads.getProgress() + 1);
-                        mBinder.onMissionAdded(mManager.getMission(res));
+                        DownloadManagerService.startMission(
+                                DownloadActivity.this,
+                                getIntent().getData().toString(), location, fName,
+                                audioButton.isChecked(), threads.getProgress() + 1);
                         mFragment.notifyChange();
 
                         mPrefs.edit().putInt(THREADS, threads.getProgress() + 1).commit();
@@ -254,9 +242,7 @@ public class DownloadActivity extends AppCompatActivity implements AdapterView.O
 
         switch (id) {
             case android.R.id.home: {
-                Intent intent = new Intent(this, org.schabi.newpipe.MainActivity.class);
-                intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
-                NavUtils.navigateUpTo(this, intent);
+                onBackPressed();
                 return true;
             }
             case R.id.action_settings: {
@@ -264,17 +250,9 @@ public class DownloadActivity extends AppCompatActivity implements AdapterView.O
                 startActivity(intent);
                 return true;
             }
-            case R.id.action_report_error: {
-                ErrorActivity.reportError(DownloadActivity.this, new Vector<Throwable>(),
-                        null, null,
-                        ErrorActivity.ErrorInfo.make(ErrorActivity.USER_REPORT,
-                                null,
-                                "user_report", R.string.user_report));
-                return true;
-            }
             default:
-                return mFragment.onOptionsItemSelected(item) ||
-                        super.onOptionsItemSelected(item);
+                return super.onOptionsItemSelected(item);
         }
     }
+
 }

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

@@ -26,6 +26,8 @@ import android.widget.TextView;
 
 import org.schabi.newpipe.App;
 import org.schabi.newpipe.R;
+import org.schabi.newpipe.extractor.NewPipe;
+import org.schabi.newpipe.settings.NewPipeSettings;
 
 import java.io.File;
 import java.util.ArrayList;
@@ -65,24 +67,6 @@ public class DownloadDialog extends DialogFragment {
     public static final String AUDIO_URL = "audio_url";
     public static final String VIDEO_URL = "video_url";
 
-    private DownloadManager mManager;
-    private DownloadManagerService.DMBinder mBinder;
-
-    private ServiceConnection mConnection = new ServiceConnection() {
-
-        @Override
-        public void onServiceConnected(ComponentName p1, IBinder binder) {
-            mBinder = (DownloadManagerService.DMBinder) binder;
-            mManager = mBinder.getDownloadManager();
-        }
-
-        @Override
-        public void onServiceDisconnected(ComponentName p1) {
-
-        }
-    };
-
-
     public DownloadDialog() {
 
     }
@@ -102,12 +86,6 @@ public class DownloadDialog extends DialogFragment {
         if(ContextCompat.checkSelfPermission(this.getContext(),Manifest.permission.WRITE_EXTERNAL_STORAGE)!= PackageManager.PERMISSION_GRANTED)
             ActivityCompat.requestPermissions(getActivity(),new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE},0);
 
-        Intent i = new Intent();
-        i.setClass(getContext(), DownloadManagerService.class);
-        getContext().startService(i);
-        getContext().bindService(i, mConnection, Context.BIND_AUTO_CREATE);
-
-
         return inflater.inflate(R.layout.dialog_url, container);
     }
 
@@ -219,36 +197,22 @@ public class DownloadDialog extends DialogFragment {
 
         String fName = name.getText().toString().trim();
 
-        // todo: add timeout? would be bad if the thread gets locked dueto this.
-        while (mBinder == null);
-
-        if(audioButton.isChecked()){
-            int res = mManager.startMission(
-                    arguments.getString(AUDIO_URL),
-                    fName + arguments.getString(FILE_SUFFIX_AUDIO),
-                    audioButton.isChecked(),
-                    threads.getProgress() + 1);
-            DownloadMission mission = mManager.getMission(res);
-            mBinder.onMissionAdded(mission);
-            // add download listener to allow media scan notification
-            DownloadListener listener = new DownloadListener(getContext(), mission);
-            mission.addListener(listener);
+        boolean isAudio = audioButton.isChecked();
+        String url, location, filename;
+        if(isAudio) {
+            url = arguments.getString(AUDIO_URL);
+            location = NewPipeSettings.getAudioDownloadPath(getContext());
+            filename = fName + arguments.getString(FILE_SUFFIX_AUDIO);
+        } else {
+            url = arguments.getString(VIDEO_URL);
+            location = NewPipeSettings.getVideoDownloadPath(getContext());
+            filename = fName + arguments.getString(FILE_SUFFIX_VIDEO);
         }
 
-        if(videoButton.isChecked()){
-            int res = mManager.startMission(
-                    arguments.getString(VIDEO_URL),
-                    fName + arguments.getString(FILE_SUFFIX_VIDEO),
-                    audioButton.isChecked(),
-                    threads.getProgress() + 1);
-            DownloadMission mission = mManager.getMission(res);
-            mBinder.onMissionAdded(mission);
-            // add download listener to allow media scan notification
-            DownloadListener listener = new DownloadListener(getContext(), mission);
-            mission.addListener(listener);
-        }
+        DownloadManagerService.startMission(getContext(), url, location, filename, isAudio,
+                threads.getProgress() + 1);
+
         getDialog().dismiss();
-
     }
 
     private void download(String url, String title,

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

@@ -1,62 +0,0 @@
-package org.schabi.newpipe.download;
-
-import android.content.Context;
-import android.content.Intent;
-import android.net.Uri;
-
-import us.shandian.giga.get.DownloadMission;
-import us.shandian.giga.get.DownloadMission.MissionListener;
-
-/**
- * Created by erwin on 06.11.16.
- *
- * Copyright (C) Christian Schabesberger 2016 <chris.schabesberger@mailbox.org>
- * DownloadListener.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/>.
- */
-
-class DownloadListener implements MissionListener
-{
-    DownloadMission mMission;
-    Context mContext;
-
-    public DownloadListener(Context context, DownloadMission mission)
-    {
-        super();
-        mMission = mission;
-        mContext = context;
-    }
-
-    @Override
-    public void onProgressUpdate(long done, long total)
-    {
-        // do nothing special ...
-    }
-
-    @Override
-    public void onFinish()
-    {
-        // notify media scanner on downloaded media file ...
-        mContext.sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE,
-                                          Uri.parse( "file://" + mMission.location
-                                                     + "/" + mMission.name)));
-    }
-
-    @Override
-    public void onError(int errCode)
-    {
-        // do nothing special ...
-    }
-}

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

@@ -42,7 +42,7 @@ import info.guardianproject.netcipher.NetCipher;
  */
 
 
-// TODO: FOR HEVEN SAKE !!! DO NOT SIMPLY USE ASYNCTASK. MAKE THIS A PROPER SERVICE !!!
+// TODO: FOR HEAVEN SAKE !!! DO NOT SIMPLY USE ASYNCTASK. MAKE THIS A PROPER SERVICE !!!
 public class FileDownloader extends AsyncTask<Void, Integer, Void> {
     public static final String TAG = "FileDownloader";
 

app/src/main/java/org/schabi/newpipe/extractor/AbstractStreamInfo.java

@@ -18,9 +18,9 @@ package org.schabi.newpipe.extractor;
  * along with NewPipe.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-/**Common properties between StreamInfo and StreamPreviewInfo.*/
+/**Common properties between StreamInfo and StreamInfoItem.*/
 public abstract class AbstractStreamInfo {
-    public static enum StreamType {
+    public enum StreamType {
         NONE,   // placeholder to check if stream type was checked or not
         VIDEO_STREAM,
         AUDIO_STREAM,

app/src/main/java/org/schabi/newpipe/extractor/InfoItem.java

@@ -0,0 +1,33 @@
+package org.schabi.newpipe.extractor;
+
+/**
+ * Created by the-scrabi on 11.02.17.
+ *
+ * Copyright (C) Christian Schabesberger 2017 <chris.schabesberger@mailbox.org>
+ * InfoItem.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 interface InfoItem {
+    public enum InfoType {
+        STREAM,
+        PLAYLIST,
+        CHANNEL
+    }
+
+    InfoType infoType();
+    String getTitle();
+    String getLink();
+}

app/src/main/java/org/schabi/newpipe/extractor/InfoItemCollector.java

@@ -0,0 +1,61 @@
+package org.schabi.newpipe.extractor;
+
+import org.schabi.newpipe.extractor.exceptions.ExtractionException;
+
+import java.util.List;
+import java.util.Vector;
+
+/**
+ * Created by Christian Schabesberger on 12.02.17.
+ *
+ * Copyright (C) Christian Schabesberger 2017 <chris.schabesberger@mailbox.org>
+ * InfoItemCollector.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 InfoItemCollector {
+    private List<InfoItem> itemList = new Vector<>();
+    private List<Throwable> errors = new Vector<>();
+    private int serviceId = -1;
+
+    public InfoItemCollector(int serviceId) {
+        this.serviceId = serviceId;
+    }
+
+    public List<InfoItem> getItemList() {
+        return itemList;
+    }
+    public List<Throwable> getErrors() {
+        return errors;
+    }
+    protected void addFromCollector(InfoItemCollector otherC) throws ExtractionException {
+        if(serviceId != otherC.serviceId) {
+            throw new ExtractionException("Service Id does not equal: "
+                    + NewPipe.getNameOfService(serviceId)
+                    + " and " + NewPipe.getNameOfService(otherC.serviceId));
+        }
+        errors.addAll(otherC.errors);
+        itemList.addAll(otherC.itemList);
+    }
+    protected void addError(Exception e) {
+        errors.add(e);
+    }
+    protected void addItem(InfoItem item) {
+        itemList.add(item);
+    }
+    protected int getServiceId() {
+        return serviceId;
+    }
+}

app/src/main/java/org/schabi/newpipe/extractor/NewPipe.java

@@ -34,25 +34,22 @@ public class NewPipe {
 
     private static final String TAG = NewPipe.class.toString();
 
-    private static final StreamingService[] serviceList = {
-        new YoutubeService(0)
-    };
 
     private static Downloader downloader = null;
 
     public static StreamingService[] getServices() {
-        return serviceList;
+        return ServiceList.serviceList;
     }
     public static StreamingService getService(int serviceId)throws ExtractionException {
-        for(StreamingService s : serviceList) {
+        for(StreamingService s : ServiceList.serviceList) {
             if(s.getServiceId() == serviceId) {
                 return s;
             }
         }
-        throw new ExtractionException("Service not known: " + Integer.toString(serviceId));
+        return null;
     }
     public static StreamingService getService(String serviceName) throws ExtractionException {
-        return serviceList[getIdOfService(serviceName)];
+        return ServiceList.serviceList[getIdOfService(serviceName)];
     }
     public static String getNameOfService(int id) {
         try {
@@ -63,13 +60,13 @@ public class NewPipe {
             return "";
         }
     }
-    public static int getIdOfService(String serviceName) throws ExtractionException {
-        for(int i = 0; i < serviceList.length; i++) {
-            if(serviceList[i].getServiceInfo().name.equals(serviceName)) {
+    public static int getIdOfService(String serviceName) {
+        for(int i = 0; i < ServiceList.serviceList.length; i++) {
+            if(ServiceList.serviceList[i].getServiceInfo().name.equals(serviceName)) {
                 return i;
             }
         }
-        throw new ExtractionException("Error: Service " + serviceName + " not known.");
+        return -1;
     }
 
     public static void init(Downloader d) {
@@ -79,4 +76,13 @@ public class NewPipe {
     public static Downloader getDownloader() {
         return downloader;
     }
+
+    public static StreamingService getServiceByUrl(String url) {
+        for(StreamingService s : ServiceList.serviceList) {
+            if(s.getLinkTypeByUrl(url) != StreamingService.LinkType.NONE) {
+                return s;
+            }
+        }
+        return null;
+    }
 }

app/src/main/java/org/schabi/newpipe/extractor/Parser.java

@@ -42,15 +42,23 @@ public class Parser {
     }
 
     public static String matchGroup1(String pattern, String input) throws RegexException {
+        return matchGroup(pattern, input, 1);
+    }
+
+    public static String matchGroup(String pattern, String input, int group) throws RegexException {
         Pattern pat = Pattern.compile(pattern);
         Matcher mat = pat.matcher(input);
         boolean foundMatch = mat.find();
         if (foundMatch) {
-            return mat.group(1);
+            return mat.group(group);
         }
         else {
             //Log.e(TAG, "failed to find pattern \""+pattern+"\" inside of \""+input+"\"");
-            throw new RegexException("failed to find pattern \""+pattern+" inside of "+input+"\"");
+            if(input.length() > 1024) {
+                throw new RegexException("failed to find pattern \""+pattern);
+            } else {
+                throw new RegexException("failed to find pattern \"" + pattern + " inside of " + input + "\"");
+            }
         }
     }
 

app/src/main/java/org/schabi/newpipe/extractor/ServiceList.java

@@ -0,0 +1,13 @@
+package org.schabi.newpipe.extractor;
+
+import org.schabi.newpipe.extractor.services.youtube.YoutubeService;
+
+/**
+ * Created by the-scrabi on 18.02.17.
+ */
+
+class ServiceList {
+    public static final StreamingService[] serviceList = {
+            new YoutubeService(0)
+    };
+}

app/src/main/java/org/schabi/newpipe/extractor/StreamingService.java

@@ -3,7 +3,6 @@ package org.schabi.newpipe.extractor;
 import org.schabi.newpipe.extractor.channel.ChannelExtractor;
 import org.schabi.newpipe.extractor.exceptions.ExtractionException;
 import org.schabi.newpipe.extractor.search.SearchEngine;
-import org.schabi.newpipe.extractor.search.SuggestionExtractor;
 import org.schabi.newpipe.extractor.stream_info.StreamExtractor;
 
 import java.io.IOException;
@@ -33,6 +32,13 @@ public abstract class StreamingService {
         public String name = "";
     }
 
+    public enum LinkType {
+        NONE,
+        STREAM,
+        CHANNEL,
+        PLAYLIST
+    }
+
     private int serviceId;
 
     public StreamingService(int id) {
@@ -44,7 +50,7 @@ public abstract class StreamingService {
     public abstract StreamExtractor getExtractorInstance(String url)
             throws IOException, ExtractionException;
     public abstract SearchEngine getSearchEngineInstance();
-    public abstract UrlIdHandler getUrlIdHandlerInstance();
+    public abstract UrlIdHandler getStreamUrlIdHandlerInstance();
     public abstract UrlIdHandler getChannelUrlIdHandlerInstance();
     public abstract ChannelExtractor getChannelExtractorInstance(String url, int page)
             throws ExtractionException, IOException;
@@ -53,4 +59,20 @@ public abstract class StreamingService {
     public final int getServiceId() {
         return serviceId;
     }
+
+    /**
+     * figure out where the link is pointing to (a channel, video, playlist, etc.)
+     */
+    public final LinkType getLinkTypeByUrl(String url) {
+        UrlIdHandler sH = getStreamUrlIdHandlerInstance();
+        UrlIdHandler cH = getChannelUrlIdHandlerInstance();
+
+        if(sH.acceptUrl(url)) {
+            return LinkType.STREAM;
+        } else if(cH.acceptUrl(url)) {
+            return LinkType.CHANNEL;
+        } else {
+            return LinkType.NONE;
+        }
+    }
 }

app/src/main/java/org/schabi/newpipe/extractor/SuggestionExtractor.java

@@ -1,4 +1,4 @@
-package org.schabi.newpipe.extractor.search;
+package org.schabi.newpipe.extractor;
 
 import org.schabi.newpipe.extractor.exceptions.ExtractionException;
 

app/src/main/java/org/schabi/newpipe/extractor/UrlIdHandler.java

@@ -23,6 +23,7 @@ import org.schabi.newpipe.extractor.exceptions.ParsingException;
  */
 
 public interface UrlIdHandler {
+
     String getUrl(String videoId);
     String getId(String siteUrl) throws ParsingException;
     String cleanUrl(String siteUrl) throws ParsingException;

app/src/main/java/org/schabi/newpipe/extractor/channel/ChannelExtractor.java

@@ -3,7 +3,7 @@ package org.schabi.newpipe.extractor.channel;
 import org.schabi.newpipe.extractor.UrlIdHandler;
 import org.schabi.newpipe.extractor.exceptions.ExtractionException;
 import org.schabi.newpipe.extractor.exceptions.ParsingException;
-import org.schabi.newpipe.extractor.stream_info.StreamPreviewInfoCollector;
+import org.schabi.newpipe.extractor.stream_info.StreamInfoItemCollector;
 
 import java.io.IOException;
 
@@ -31,7 +31,7 @@ public abstract class ChannelExtractor {
     private int serviceId;
     private String url;
     private UrlIdHandler urlIdHandler;
-    private StreamPreviewInfoCollector previewInfoCollector;
+    private StreamInfoItemCollector previewInfoCollector;
     private int page = -1;
 
     public ChannelExtractor(UrlIdHandler urlIdHandler, String url, int page, int serviceId)
@@ -40,12 +40,12 @@ public abstract class ChannelExtractor {
         this.page = page;
         this.serviceId = serviceId;
         this.urlIdHandler = urlIdHandler;
-        previewInfoCollector = new StreamPreviewInfoCollector(urlIdHandler, serviceId);
+        previewInfoCollector = new StreamInfoItemCollector(urlIdHandler, serviceId);
     }
 
     public String getUrl() { return url; }
     public UrlIdHandler getUrlIdHandler() { return urlIdHandler; }
-    public StreamPreviewInfoCollector getStreamPreviewInfoCollector() {
+    public StreamInfoItemCollector getStreamPreviewInfoCollector() {
         return previewInfoCollector;
     }
 
@@ -53,7 +53,7 @@ public abstract class ChannelExtractor {
     public abstract String getAvatarUrl() throws ParsingException;
     public abstract String getBannerUrl() throws ParsingException;
     public abstract String getFeedUrl() throws ParsingException;
-    public abstract StreamPreviewInfoCollector getStreams() throws ParsingException;
+    public abstract StreamInfoItemCollector getStreams() throws ParsingException;
     public abstract boolean hasNextPage() throws ParsingException;
     public int getServiceId() {
         return serviceId;

app/src/main/java/org/schabi/newpipe/extractor/channel/ChannelInfo.java

@@ -1,8 +1,9 @@
 package org.schabi.newpipe.extractor.channel;
 
+import org.schabi.newpipe.extractor.InfoItem;
 import org.schabi.newpipe.extractor.exceptions.ParsingException;
-import org.schabi.newpipe.extractor.stream_info.StreamPreviewInfo;
-import org.schabi.newpipe.extractor.stream_info.StreamPreviewInfoCollector;
+import org.schabi.newpipe.extractor.stream_info.StreamInfoItem;
+import org.schabi.newpipe.extractor.stream_info.StreamInfoItemCollector;
 
 import java.util.List;
 import java.util.Vector;
@@ -59,7 +60,7 @@ public class ChannelInfo {
             info.errors.add(e);
         }
         try {
-            StreamPreviewInfoCollector c = extractor.getStreams();
+            StreamInfoItemCollector c = extractor.getStreams();
             info.related_streams = c.getItemList();
             info.errors.addAll(c.getErrors());
         } catch(Exception e) {
@@ -74,7 +75,7 @@ public class ChannelInfo {
     public String avatar_url = "";
     public String banner_url = "";
     public String feed_url = "";
-    public List<StreamPreviewInfo> related_streams = null;
+    public List<InfoItem> related_streams = null;
     public boolean hasNextPage = false;
 
     public List<Throwable> errors = new Vector<>();

app/src/main/java/org/schabi/newpipe/extractor/channel/ChannelInfoItem.java

@@ -0,0 +1,44 @@
+package org.schabi.newpipe.extractor.channel;
+
+import org.schabi.newpipe.extractor.InfoItem;
+
+/**
+ * Created by Christian Schabesberger on 11.02.17.
+ *
+ * Copyright (C) Christian Schabesberger 2017 <chris.schabesberger@mailbox.org>
+ * ChannelInfoItem.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 ChannelInfoItem implements InfoItem {
+
+    public int serviceId = -1;
+    public String channelName = "";
+    public String thumbnailUrl = "";
+    public String webPageUrl = "";
+    public String description = "";
+    public long subscriberCount = -1;
+    public int videoAmount = -1;
+
+    public InfoType infoType() {
+        return InfoType.CHANNEL;
+    }
+    public String getTitle() {
+        return channelName;
+    }
+    public String getLink() {
+        return webPageUrl;
+    }
+}

app/src/main/java/org/schabi/newpipe/extractor/channel/ChannelInfoItemCollector.java

@@ -0,0 +1,74 @@
+package org.schabi.newpipe.extractor.channel;
+
+import org.schabi.newpipe.extractor.InfoItemCollector;
+import org.schabi.newpipe.extractor.NewPipe;
+import org.schabi.newpipe.extractor.exceptions.FoundAdException;
+import org.schabi.newpipe.extractor.exceptions.ParsingException;
+import org.schabi.newpipe.extractor.stream_info.StreamInfoItem;
+import org.schabi.newpipe.extractor.stream_info.StreamInfoItemExtractor;
+
+/**
+ * Created by Christian Schabesberger on 12.02.17.
+ *
+ * Copyright (C) Christian Schabesberger 2017 <chris.schabesberger@mailbox.org>
+ * ChannelInfoItemCollector.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 ChannelInfoItemCollector extends InfoItemCollector {
+    public ChannelInfoItemCollector(int serviceId) {
+        super(serviceId);
+    }
+
+    public ChannelInfoItem extract(ChannelInfoItemExtractor extractor) throws ParsingException {
+        ChannelInfoItem resultItem = new ChannelInfoItem();
+        // importand information
+        resultItem.channelName = extractor.getChannelName();
+
+        resultItem.serviceId = getServiceId();
+        resultItem.webPageUrl = extractor.getWebPageUrl();
+
+        // optional information
+        try {
+            resultItem.subscriberCount = extractor.getSubscriberCount();
+        } catch (Exception e) {
+            addError(e);
+        }
+        try {
+            resultItem.videoAmount = extractor.getVideoAmount();
+        } catch (Exception e) {
+            addError(e);
+        }
+        try {
+            resultItem.thumbnailUrl = extractor.getThumbnailUrl();
+        } catch (Exception e) {
+            addError(e);
+        }
+        try {
+            resultItem.description = extractor.getDescription();
+        } catch (Exception e) {
+            addError(e);
+        }
+        return resultItem;
+    }
+
+    public void commit(ChannelInfoItemExtractor extractor) throws ParsingException {
+        try {
+            addItem(extract(extractor));
+        } catch (Exception e) {
+            addError(e);
+        }
+    }
+}

app/src/main/java/org/schabi/newpipe/extractor/channel/ChannelInfoItemExtractor.java

@@ -0,0 +1,32 @@
+package org.schabi.newpipe.extractor.channel;
+
+import org.schabi.newpipe.extractor.exceptions.ParsingException;
+
+/**
+ * Created by Christian Schabesberger on 12.02.17.
+ *
+ * Copyright (C) Christian Schabesberger 2017 <chris.schabesberger@mailbox.org>
+ * ChannelInfoItemExtractor.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 interface ChannelInfoItemExtractor {
+    String getThumbnailUrl() throws ParsingException;
+    String getChannelName() throws ParsingException;
+    String getWebPageUrl() throws ParsingException;
+    String getDescription() throws ParsingException;
+    long getSubscriberCount() throws ParsingException;
+    int getVideoAmount() throws ParsingException;
+}

app/src/main/java/org/schabi/newpipe/extractor/search/InfoItemSearchCollector.java

@@ -0,0 +1,79 @@
+package org.schabi.newpipe.extractor.search;
+
+import org.schabi.newpipe.extractor.InfoItemCollector;
+import org.schabi.newpipe.extractor.UrlIdHandler;
+import org.schabi.newpipe.extractor.channel.ChannelInfoItemCollector;
+import org.schabi.newpipe.extractor.channel.ChannelInfoItemExtractor;
+import org.schabi.newpipe.extractor.exceptions.ExtractionException;
+import org.schabi.newpipe.extractor.exceptions.FoundAdException;
+import org.schabi.newpipe.extractor.exceptions.ParsingException;
+import org.schabi.newpipe.extractor.stream_info.StreamInfoItemCollector;
+import org.schabi.newpipe.extractor.stream_info.StreamInfoItemExtractor;
+
+/**
+ * Created by Christian Schabesberger on 12.02.17.
+ *
+ * Copyright (C) Christian Schabesberger 2017 <chris.schabesberger@mailbox.org>
+ * InfoItemSearchCollector.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 InfoItemSearchCollector extends InfoItemCollector {
+    private String suggestion = "";
+    private StreamInfoItemCollector streamCollector;
+    private ChannelInfoItemCollector channelCollector;
+
+    SearchResult result = new SearchResult();
+
+    InfoItemSearchCollector(UrlIdHandler handler, int serviceId) {
+        super(serviceId);
+        streamCollector = new StreamInfoItemCollector(handler, serviceId);
+        channelCollector = new ChannelInfoItemCollector(serviceId);
+    }
+
+    public void setSuggestion(String suggestion) {
+        this.suggestion = suggestion;
+    }
+
+    public SearchResult getSearchResult() throws ExtractionException {
+
+        addFromCollector(channelCollector);
+        addFromCollector(streamCollector);
+
+        result.suggestion = suggestion;
+        result.errors = getErrors();
+        return result;
+    }
+
+    public void commit(StreamInfoItemExtractor extractor) {
+        try {
+            result.resultList.add(streamCollector.extract(extractor));
+        } catch(FoundAdException ae) {
+            System.err.println("Found add");
+        } catch (Exception e) {
+            addError(e);
+        }
+    }
+
+    public void commit(ChannelInfoItemExtractor extractor) {
+        try {
+            result.resultList.add(channelCollector.extract(extractor));
+        } catch(FoundAdException ae) {
+            System.err.println("Found add");
+        } catch (Exception e) {
+            addError(e);
+        }
+    }
+}

app/src/main/java/org/schabi/newpipe/extractor/search/SearchEngine.java

@@ -2,9 +2,10 @@ package org.schabi.newpipe.extractor.search;
 
 import org.schabi.newpipe.extractor.UrlIdHandler;
 import org.schabi.newpipe.extractor.exceptions.ExtractionException;
+import org.schabi.newpipe.extractor.stream_info.StreamInfoItemCollector;
 
 import java.io.IOException;
-import java.util.List;
+import java.util.EnumSet;
 
 /**
  * Created by Christian Schabesberger on 10.08.15.
@@ -26,26 +27,27 @@ import java.util.List;
  * along with NewPipe.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-@SuppressWarnings("ALL")
 public abstract class SearchEngine {
+    public enum Filter {
+        STREAM, CHANNEL, PLAY_LIST
+    }
+
     public static class NothingFoundException extends ExtractionException {
         public NothingFoundException(String message) {
             super(message);
         }
     }
-
-    private StreamPreviewInfoSearchCollector collector;
+    private InfoItemSearchCollector collector;
 
     public SearchEngine(UrlIdHandler urlIdHandler, int serviceId) {
-        collector = new StreamPreviewInfoSearchCollector(urlIdHandler, serviceId);
+        collector = new InfoItemSearchCollector(urlIdHandler, serviceId);
     }
 
-    protected StreamPreviewInfoSearchCollector getStreamPreviewInfoSearchCollector() {
+    protected  InfoItemSearchCollector getInfoItemSearchCollector() {
         return collector;
     }
-
     //Result search(String query, int page);
-    public abstract StreamPreviewInfoSearchCollector search(
-            String query, int page, String contentCountry)
+    public abstract InfoItemSearchCollector search(
+            String query, int page, String contentCountry, EnumSet<Filter> filter)
             throws ExtractionException, IOException;
 }

app/src/main/java/org/schabi/newpipe/extractor/search/SearchResult.java

@@ -1,9 +1,11 @@
 package org.schabi.newpipe.extractor.search;
 
+import org.schabi.newpipe.extractor.InfoItem;
 import org.schabi.newpipe.extractor.exceptions.ExtractionException;
-import org.schabi.newpipe.extractor.stream_info.StreamPreviewInfo;
+import org.schabi.newpipe.extractor.stream_info.StreamInfoItem;
 
 import java.io.IOException;
+import java.util.EnumSet;
 import java.util.List;
 import java.util.Vector;
 
@@ -29,13 +31,17 @@ import java.util.Vector;
 
 public class SearchResult {
     public static SearchResult getSearchResult(SearchEngine engine, String query,
-                                               int page, String languageCode)
+                                               int page, String languageCode, EnumSet<SearchEngine.Filter> filter)
             throws ExtractionException, IOException {
 
-        SearchResult result = engine.search(query, page, languageCode).getSearchResult();
+        SearchResult result = engine
+                .search(query, page, languageCode, filter)
+                .getSearchResult();
         if(result.resultList.isEmpty()) {
             if(result.suggestion.isEmpty()) {
-                throw new ExtractionException("Empty result despite no error");
+                if(result.errors.isEmpty()) {
+                    throw new ExtractionException("Empty result despite no error");
+                }
             } else {
                 // This is used as a fallback. Do not relay on it !!!
                 throw new SearchEngine.NothingFoundException(result.suggestion);
@@ -45,6 +51,6 @@ public class SearchResult {
     }
 
     public String suggestion = "";
-    public List<StreamPreviewInfo> resultList = new Vector<>();
+    public List<InfoItem> resultList = new Vector<>();
     public List<Throwable> errors = new Vector<>();
 }

app/src/main/java/org/schabi/newpipe/extractor/search/StreamPreviewInfoSearchCollector.java

@@ -1,45 +0,0 @@
-package org.schabi.newpipe.extractor.search;
-
-import org.schabi.newpipe.extractor.UrlIdHandler;
-import org.schabi.newpipe.extractor.stream_info.StreamPreviewInfoCollector;
-
-/**
- * Created by Christian Schabesberger on 11.05.16.
- *
- * Copyright (C) Christian Schabesberger 2016 <chris.schabesberger@mailbox.org>
- * StreamPreviewInfoSearchCollector.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 StreamPreviewInfoSearchCollector extends StreamPreviewInfoCollector {
-
-    private String suggestion = "";
-
-    public StreamPreviewInfoSearchCollector(UrlIdHandler handler, int serviceId) {
-        super(handler, serviceId);
-    }
-
-    public void setSuggestion(String suggestion) {
-        this.suggestion = suggestion;
-    }
-
-    public SearchResult getSearchResult() {
-        SearchResult result = new SearchResult();
-        result.suggestion = suggestion;
-        result.errors = getErrors();
-        result.resultList = getItemList();
-        return result;
-    }
-}

app/src/main/java/org/schabi/newpipe/extractor/services/youtube/YoutubeChannelExtractor.java

@@ -15,8 +15,8 @@ import org.schabi.newpipe.extractor.UrlIdHandler;
 import org.schabi.newpipe.extractor.channel.ChannelExtractor;
 import org.schabi.newpipe.extractor.exceptions.ExtractionException;
 import org.schabi.newpipe.extractor.exceptions.ParsingException;
-import org.schabi.newpipe.extractor.stream_info.StreamPreviewInfoCollector;
-import org.schabi.newpipe.extractor.stream_info.StreamPreviewInfoExtractor;
+import org.schabi.newpipe.extractor.stream_info.StreamInfoItemCollector;
+import org.schabi.newpipe.extractor.stream_info.StreamInfoItemExtractor;
 
 
 import java.io.IOException;
@@ -137,7 +137,8 @@ public class YoutubeChannelExtractor extends ChannelExtractor {
                 Element el = doc.select("div[id=\"gh-banner\"]").first().select("style").first();
                 String cssContent = el.html();
                 String url = "https:" + Parser.matchGroup1("url\\(([^)]+)\\)", cssContent);
-                if (url.contains("s.ytimg.com")) {
+
+                if (url.contains("s.ytimg.com") || url.contains("default_banner")) {
                     bannerUrl = null;
                 } else {
                     bannerUrl = url;
@@ -150,8 +151,8 @@ public class YoutubeChannelExtractor extends ChannelExtractor {
     }
 
     @Override
-    public StreamPreviewInfoCollector getStreams() throws ParsingException {
-        StreamPreviewInfoCollector collector = getStreamPreviewInfoCollector();
+    public StreamInfoItemCollector getStreams() throws ParsingException {
+        StreamInfoItemCollector collector = getStreamPreviewInfoCollector();
         Element ul = null;
         if(isAjaxPage) {
             ul = doc.select("body").first();
@@ -161,7 +162,7 @@ public class YoutubeChannelExtractor extends ChannelExtractor {
 
         for(final Element li : ul.children()) {
             if (li.select("div[class=\"feed-item-dismissable\"]").first() != null) {
-                collector.commit(new StreamPreviewInfoExtractor() {
+                collector.commit(new StreamInfoItemExtractor() {
                     @Override
                     public AbstractStreamInfo.StreamType getStreamType() throws ParsingException {
                         return AbstractStreamInfo.StreamType.VIDEO_STREAM;

app/src/main/java/org/schabi/newpipe/extractor/services/youtube/YoutubeChannelInfoItemExtractor.java

@@ -0,0 +1,83 @@
+package org.schabi.newpipe.extractor.services.youtube;
+
+import org.schabi.newpipe.extractor.Parser;
+import org.schabi.newpipe.extractor.channel.ChannelInfoItemExtractor;
+import org.schabi.newpipe.extractor.exceptions.ParsingException;
+import org.jsoup.nodes.Element;
+
+/**
+ * Created by Christian Schabesberger on 12.02.17.
+ *
+ * Copyright (C) Christian Schabesberger 2017 <chris.schabesberger@mailbox.org>
+ * YoutubeChannelInfoItemExtractor.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 YoutubeChannelInfoItemExtractor implements ChannelInfoItemExtractor {
+    private Element el;
+
+    public YoutubeChannelInfoItemExtractor(Element el) {
+        this.el = el;
+    }
+
+    public String getThumbnailUrl() throws ParsingException {
+        Element img = el.select("span[class*=\"yt-thumb-simple\"]").first()
+                .select("img").first();
+
+        String url = img.attr("abs:src");
+
+        if(url.contains("gif")) {
+            url = img.attr("abs:data-thumb");
+        }
+        return url;
+    }
+
+    public String getChannelName() throws ParsingException {
+        return el.select("a[class*=\"yt-uix-tile-link\"]").first()
+                .text();
+    }
+
+    public String getWebPageUrl() throws ParsingException {
+        return el.select("a[class*=\"yt-uix-tile-link\"]").first()
+                .attr("abs:href");
+    }
+
+    public long getSubscriberCount() throws ParsingException {
+        Element subsEl = el.select("span[class*=\"yt-subscriber-count\"]").first();
+        if(subsEl == null) {
+            return 0;
+        } else {
+            return Integer.parseInt(subsEl.text().replaceAll("\\D+",""));
+        }
+    }
+
+    public int getVideoAmount() throws ParsingException {
+        Element metaEl = el.select("ul[class*=\"yt-lockup-meta-info\"]").first();
+        if(metaEl == null) {
+            return 0;
+        } else {
+            return Integer.parseInt(metaEl.text().replaceAll("\\D+",""));
+        }
+    }
+
+    public String getDescription() throws ParsingException {
+        Element desEl = el.select("div[class*=\"yt-lockup-description\"]").first();
+        if(desEl == null) {
+            return "";
+        } else {
+            return desEl.text();
+        }
+    }
+}

app/src/main/java/org/schabi/newpipe/extractor/services/youtube/YoutubeSearchEngine.java

@@ -7,12 +7,12 @@ import org.schabi.newpipe.extractor.Downloader;
 import org.schabi.newpipe.extractor.NewPipe;
 import org.schabi.newpipe.extractor.UrlIdHandler;
 import org.schabi.newpipe.extractor.exceptions.ExtractionException;
+import org.schabi.newpipe.extractor.search.InfoItemSearchCollector;
 import org.schabi.newpipe.extractor.search.SearchEngine;
-import org.schabi.newpipe.extractor.search.StreamPreviewInfoSearchCollector;
-import org.schabi.newpipe.extractor.stream_info.StreamPreviewInfoExtractor;
 
 import java.net.URLEncoder;
 import java.io.IOException;
+import java.util.EnumSet;
 
 
 /**
@@ -45,16 +45,24 @@ public class YoutubeSearchEngine extends SearchEngine {
     }
 
     @Override
-    public StreamPreviewInfoSearchCollector search(String query, int page, String languageCode)
+    public InfoItemSearchCollector search(String query,
+                                          int page,
+                                          String languageCode,
+                                          EnumSet<Filter> filter)
             throws IOException, ExtractionException {
-        StreamPreviewInfoSearchCollector collector = getStreamPreviewInfoSearchCollector();
+        InfoItemSearchCollector collector = getInfoItemSearchCollector();
+
 
         Downloader downloader = NewPipe.getDownloader();
 
         String url = "https://www.youtube.com/results"
-                + "?search_query=" + URLEncoder.encode(query, CHARSET_UTF_8)
-                + "&page=" + Integer.toString(page + 1)
-                + "&filters=" + "video";
+                + "?q=" + URLEncoder.encode(query, CHARSET_UTF_8)
+                + "&page=" + Integer.toString(page + 1);
+        if(filter.contains(Filter.STREAM) && !filter.contains(Filter.CHANNEL)) {
+            url += "&sp=EgIQAQ%253D%253D";
+        } else if(!filter.contains(Filter.STREAM) && filter.contains(Filter.CHANNEL)) {
+            url += "&sp=EgIQAg%253D%253D";
+        }
 
         String site;
         //String url = builder.build().toString();
@@ -85,29 +93,27 @@ public class YoutubeSearchEngine extends SearchEngine {
             Element el;
 
             // both types of spell correction item
-            if (!((el = item.select("div[class*=\"spell-correction\"]").first()) == null)) {
+            if ((el = item.select("div[class*=\"spell-correction\"]").first()) != null) {
                 collector.setSuggestion(el.select("a").first().text());
                 if(list.children().size() == 1) {
                     throw new NothingFoundException("Did you mean: " + el.select("a").first().text());
                 }
                 // search message item
-            } else if (!((el = item.select("div[class*=\"search-message\"]").first()) == null)) {
-                //result.errorMessage = el.text();
+            } else if ((el = item.select("div[class*=\"search-message\"]").first()) != null) {
                 throw new NothingFoundException(el.text());
 
                 // video item type
-            } else if (!((el = item.select("div[class*=\"yt-lockup-video\"").first()) == null)) {
-                collector.commit(extractPreviewInfo(el));
+            } else if ((el = item.select("div[class*=\"yt-lockup-video\"]").first()) != null) {
+                collector.commit(new YoutubeStreamInfoItemExtractor(el));
+            } else if((el = item.select("div[class*=\"yt-lockup-channel\"]").first()) != null) {
+                collector.commit(new YoutubeChannelInfoItemExtractor(el));
             } else {
-                //noinspection ConstantConditions
-                collector.addError(new Exception("unexpected element found:\"" + el + "\""));
+                // noinspection ConstantConditions
+                // simply ignore not known items
+                // throw new ExtractionException("unexpected element found: \"" + item + "\"");
             }
         }
 
         return collector;
     }
-
-    private StreamPreviewInfoExtractor extractPreviewInfo(final Element item) {
-        return new YoutubeStreamPreviewInfoExtractor(item);
-    }
 }

app/src/main/java/org/schabi/newpipe/extractor/services/youtube/YoutubeService.java

@@ -5,7 +5,7 @@ import org.schabi.newpipe.extractor.UrlIdHandler;
 import org.schabi.newpipe.extractor.channel.ChannelExtractor;
 import org.schabi.newpipe.extractor.exceptions.ExtractionException;
 import org.schabi.newpipe.extractor.search.SearchEngine;
-import org.schabi.newpipe.extractor.search.SuggestionExtractor;
+import org.schabi.newpipe.extractor.SuggestionExtractor;
 import org.schabi.newpipe.extractor.stream_info.StreamExtractor;
 
 import java.io.IOException;
@@ -46,7 +46,7 @@ public class YoutubeService extends StreamingService {
     @Override
     public StreamExtractor getExtractorInstance(String url)
             throws ExtractionException, IOException {
-        UrlIdHandler urlIdHandler = new YoutubeStreamUrlIdHandler();
+        UrlIdHandler urlIdHandler = YoutubeStreamUrlIdHandler.getInstance();
         if(urlIdHandler.acceptUrl(url)) {
             return new YoutubeStreamExtractor(urlIdHandler, url, getServiceId());
         }
@@ -56,12 +56,12 @@ public class YoutubeService extends StreamingService {
     }
     @Override
     public SearchEngine getSearchEngineInstance() {
-        return new YoutubeSearchEngine(getUrlIdHandlerInstance(), getServiceId());
+        return new YoutubeSearchEngine(getStreamUrlIdHandlerInstance(), getServiceId());
     }
 
     @Override
-    public UrlIdHandler getUrlIdHandlerInstance() {
-        return new YoutubeStreamUrlIdHandler();
+    public UrlIdHandler getStreamUrlIdHandlerInstance() {
+        return YoutubeStreamUrlIdHandler.getInstance();
     }
 
     @Override

app/src/main/java/org/schabi/newpipe/extractor/services/youtube/YoutubeStreamExtractor.java

@@ -20,8 +20,8 @@ import org.schabi.newpipe.extractor.UrlIdHandler;
 import org.schabi.newpipe.extractor.MediaFormat;
 import org.schabi.newpipe.extractor.stream_info.StreamExtractor;
 import org.schabi.newpipe.extractor.stream_info.StreamInfo;
-import org.schabi.newpipe.extractor.stream_info.StreamPreviewInfoCollector;
-import org.schabi.newpipe.extractor.stream_info.StreamPreviewInfoExtractor;
+import org.schabi.newpipe.extractor.stream_info.StreamInfoItemCollector;
+import org.schabi.newpipe.extractor.stream_info.StreamInfoItemExtractor;
 import org.schabi.newpipe.extractor.stream_info.VideoStream;
 
 import java.io.IOException;
@@ -88,7 +88,7 @@ public class YoutubeStreamExtractor extends StreamExtractor {
     // $$el_type$$ will be replaced by the actual el_type (se the declarations below)
     private static final String GET_VIDEO_INFO_URL =
             "https://www.youtube.com/get_video_info?video_id=%%video_id%%$$el_type$$&ps=default&eurl=&gl=US&hl=en";
-    // eltype is nececeary for the url aboth
+    // eltype is necessary for the url above
     private static final String EL_INFO = "el=info";
 
     public enum ItagType {
@@ -184,7 +184,7 @@ public class YoutubeStreamExtractor extends StreamExtractor {
     // cached values
     private static volatile String decryptionCode = "";
 
-    UrlIdHandler urlidhandler = new YoutubeStreamUrlIdHandler();
+    UrlIdHandler urlidhandler = YoutubeStreamUrlIdHandler.getInstance();
     String pageUrl = "";
 
     public YoutubeStreamExtractor(UrlIdHandler urlIdHandler, String pageUrl, int serviceId)
@@ -657,7 +657,7 @@ public class YoutubeStreamExtractor extends StreamExtractor {
     }
 
     @Override
-    public StreamPreviewInfoExtractor getNextVideo() throws ParsingException {
+    public StreamInfoItemExtractor getNextVideo() throws ParsingException {
         try {
             return extractVideoPreviewInfo(doc.select("div[class=\"watch-sidebar-section\"]").first()
                     .select("li").first());
@@ -667,9 +667,9 @@ public class YoutubeStreamExtractor extends StreamExtractor {
     }
 
     @Override
-    public StreamPreviewInfoCollector getRelatedVideos() throws ParsingException {
+    public StreamInfoItemCollector getRelatedVideos() throws ParsingException {
         try {
-            StreamPreviewInfoCollector collector = getStreamPreviewInfoCollector();
+            StreamInfoItemCollector collector = getStreamPreviewInfoCollector();
             Element ul = doc.select("ul[id=\"watch-related\"]").first();
             if(ul != null) {
                 for (Element li : ul.children()) {
@@ -707,10 +707,10 @@ public class YoutubeStreamExtractor extends StreamExtractor {
     }
 
     /**Provides information about links to other videos on the video page, such as related videos.
-     * This is encapsulated in a StreamPreviewInfo object,
+     * This is encapsulated in a StreamInfoItem object,
      * which is a subset of the fields in a full StreamInfo.*/
-    private StreamPreviewInfoExtractor extractVideoPreviewInfo(final Element li) {
-        return new StreamPreviewInfoExtractor() {
+    private StreamInfoItemExtractor extractVideoPreviewInfo(final Element li) {
+        return new StreamInfoItemExtractor() {
             @Override
             public AbstractStreamInfo.StreamType getStreamType() throws ParsingException {
                 return null;
@@ -791,10 +791,15 @@ public class YoutubeStreamExtractor extends StreamExtractor {
 
         try {
             Downloader downloader = NewPipe.getDownloader();
+            if(!playerUrl.contains("https://youtube.com")) {
+                //sometimes the https://youtube.com part does not get send with
+                //than we have to add it by hand
+                playerUrl = "https://youtube.com" + playerUrl;
+            }
             String playerCode = downloader.download(playerUrl);
 
             decryptionFuncName =
-                    Parser.matchGroup1("\\.sig\\|\\|([a-zA-Z0-9$]+)\\(", playerCode);
+                    Parser.matchGroup("([\"\\'])signature\\1\\s*,\\s*([a-zA-Z0-9$]+)\\(", playerCode, 2);
 
             String functionPattern = "("
                     + decryptionFuncName.replace("$", "\\$")

app/src/main/java/org/schabi/newpipe/extractor/services/youtube/YoutubeStreamInfoItemExtractor.java

@@ -4,11 +4,11 @@ import org.jsoup.nodes.Element;
 import org.schabi.newpipe.extractor.AbstractStreamInfo;
 import org.schabi.newpipe.extractor.Parser;
 import org.schabi.newpipe.extractor.exceptions.ParsingException;
-import org.schabi.newpipe.extractor.stream_info.StreamPreviewInfoExtractor;
+import org.schabi.newpipe.extractor.stream_info.StreamInfoItemExtractor;
 
 /**
  * Copyright (C) Christian Schabesberger 2016 <chris.schabesberger@mailbox.org>
- * YoutubeStreamPreviewInfoExtractor.java is part of NewPipe.
+ * YoutubeStreamInfoItemExtractor.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
@@ -24,11 +24,11 @@ import org.schabi.newpipe.extractor.stream_info.StreamPreviewInfoExtractor;
  * along with NewPipe.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-public class YoutubeStreamPreviewInfoExtractor implements StreamPreviewInfoExtractor {
+public class YoutubeStreamInfoItemExtractor implements StreamInfoItemExtractor {
 
     private final Element item;
 
-    public YoutubeStreamPreviewInfoExtractor(Element item) {
+    public YoutubeStreamInfoItemExtractor(Element item) {
         this.item = item;
     }
 
@@ -83,9 +83,12 @@ public class YoutubeStreamPreviewInfoExtractor implements StreamPreviewInfoExtra
     @Override
     public String getUploadDate() throws ParsingException {
         try {
-            return item.select("div[class=\"yt-lockup-meta\"]").first()
-                    .select("li").first()
-                    .text();
+            Element div = item.select("div[class=\"yt-lockup-meta\"]").first();
+            if(div == null) {
+                return null;
+            } else {
+                return div.select("li").first().text();
+            }
         } catch(Exception e) {
             throw new ParsingException("Could not get uplaod date", e);
         }
@@ -96,9 +99,13 @@ public class YoutubeStreamPreviewInfoExtractor implements StreamPreviewInfoExtra
         String output;
         String input;
         try {
-            input = item.select("div[class=\"yt-lockup-meta\"]").first()
-                    .select("li").get(1)
-                    .text();
+            Element div = item.select("div[class=\"yt-lockup-meta\"]").first();
+            if(div == null) {
+                return -1;
+            } else {
+                input = div.select("li").get(1)
+                        .text();
+            }
         } catch (IndexOutOfBoundsException e) {
             if(isLiveStream(item)) {
                 // -1 for no view count

app/src/main/java/org/schabi/newpipe/extractor/services/youtube/YoutubeStreamUrlIdHandler.java

@@ -1,12 +1,21 @@
 package org.schabi.newpipe.extractor.services.youtube;
 
+import android.support.annotation.NonNull;
+
+import org.schabi.newpipe.extractor.Downloader;
+import org.schabi.newpipe.extractor.NewPipe;
 import org.schabi.newpipe.extractor.Parser;
 import org.schabi.newpipe.extractor.UrlIdHandler;
 import org.schabi.newpipe.extractor.exceptions.FoundAdException;
 import org.schabi.newpipe.extractor.exceptions.ParsingException;
+import org.schabi.newpipe.extractor.exceptions.ReCaptchaException;
 
+import java.io.IOException;
 import java.io.UnsupportedEncodingException;
+import java.net.URI;
+import java.net.URISyntaxException;
 import java.net.URLDecoder;
+import java.util.regex.Matcher;
 
 /**
  * Created by Christian Schabesberger on 02.02.16.
@@ -29,45 +38,55 @@ import java.net.URLDecoder;
  */
 
 public class YoutubeStreamUrlIdHandler implements UrlIdHandler {
-    @SuppressWarnings("WeakerAccess")
+
+    private static final YoutubeStreamUrlIdHandler instance = new YoutubeStreamUrlIdHandler();
+    private static final String ID_PATTERN = "([\\-a-zA-Z0-9_]{11})";
+
+    private YoutubeStreamUrlIdHandler() {}
+
+    public static YoutubeStreamUrlIdHandler getInstance() {
+        return instance;
+    }
+
     @Override
     public String getUrl(String videoId) {
         return "https://www.youtube.com/watch?v=" + videoId;
     }
 
-    @SuppressWarnings("WeakerAccess")
     @Override
     public String getId(String url) throws ParsingException, IllegalArgumentException {
-        if(url.isEmpty())
-        {
+        if(url.isEmpty()) {
             throw new IllegalArgumentException("The url parameter should not be empty");
         }
-        String id;
 
-        if(url.contains("youtube")) {
-            if(url.contains("attribution_link")) {
+        String id;
+        String lowercaseUrl = url.toLowerCase();
+        if(lowercaseUrl.contains("youtube")) {
+            if (url.contains("attribution_link")) {
                 try {
                     String escapedQuery = Parser.matchGroup1("u=(.[^&|$]*)", url);
                     String query = URLDecoder.decode(escapedQuery, "UTF-8");
-                    id = Parser.matchGroup1("v=([\\-a-zA-Z0-9_]{11})", query);
-                } catch(UnsupportedEncodingException uee) {
+                    id = Parser.matchGroup1("v=" + ID_PATTERN, query);
+                } catch (UnsupportedEncodingException uee) {
                     throw new ParsingException("Could not parse attribution_link", uee);
                 }
-            }
-            else if(url.contains("vnd.youtube"))
-            {
-                id = Parser.matchGroup1("([\\-a-zA-Z0-9_]{11}).*", url);
+            } else if(lowercaseUrl.contains("youtube.com/shared?ci=")) {
+                return getRealIdFromSharedLink(url);
+            } else if (url.contains("vnd.youtube")) {
+                id = Parser.matchGroup1(ID_PATTERN, url);
+            } else if (url.contains("embed")) {
+                id = Parser.matchGroup1("embed/" + ID_PATTERN, url);
             } else if(url.contains("googleads")) {
                 throw new FoundAdException("Error found add: " + url);
             } else {
-                id = Parser.matchGroup1("[?&]v=([\\-a-zA-Z0-9_]{11})", url);
+                id = Parser.matchGroup1("[?&]v=" + ID_PATTERN, url);
             }
         }
-        else if(url.contains("youtu.be")) {
+        else if(lowercaseUrl.contains("youtu.be")) {
             if(url.contains("v=")) {
-                id = Parser.matchGroup1("v=([\\-a-zA-Z0-9_]{11})", url);
+                id = Parser.matchGroup1("v=" + ID_PATTERN, url);
             } else {
-                id = Parser.matchGroup1("youtu\\.be/([a-zA-Z0-9_-]{11})", url);
+                id = Parser.matchGroup1("[Yy][Oo][Uu][Tt][Uu]\\.[Bb][Ee]/" + ID_PATTERN, url);
             }
         }
         else {
@@ -82,13 +101,66 @@ public class YoutubeStreamUrlIdHandler implements UrlIdHandler {
         }
     }
 
+    /**
+     * Get the real url from a shared uri.
+     *
+     * Shared URI's look like this:
+     * <pre>
+     *     * https://www.youtube.com/shared?ci=PJICrTByb3E
+     *     * vnd.youtube://www.youtube.com/shared?ci=PJICrTByb3E&feature=twitter-deep-link
+     * </pre>
+     * @param url The shared url
+     * @return the id of the stream
+     * @throws ParsingException
+     */
+    private @NonNull String getRealIdFromSharedLink(String url) throws ParsingException {
+        URI uri;
+        try {
+            uri = new URI(url);
+        } catch (URISyntaxException e) {
+            throw new ParsingException("Invalid shared link", e);
+        }
+        String sharedId = getSharedId(uri);
+        Downloader downloader = NewPipe.getDownloader();
+        String content;
+        try {
+            content = downloader.download("https://www.youtube.com/shared?ci=" + sharedId);
+        } catch (IOException | ReCaptchaException e) {
+            throw new ParsingException("Unable to resolve shared link", e);
+        }
+        // is this bad? is this fragile?:
+        String realId = Parser.matchGroup1("rel=\"shortlink\" href=\"https://youtu.be/" + ID_PATTERN, content);
+        if(sharedId.equals(realId)) {
+            throw new ParsingException("Got same id for as shared id: " + sharedId);
+        }
+        return realId;
+    }
+
+    private @NonNull String getSharedId(URI uri) throws ParsingException {
+        if (!"/shared".equals(uri.getPath())) {
+            throw new ParsingException("Not a shared link: " + uri.toString() + " (path != " + uri.getPath() + ")");
+        }
+        return Parser.matchGroup1("ci=" + ID_PATTERN, uri.getQuery());
+    }
+
     public String cleanUrl(String complexUrl) throws ParsingException {
         return getUrl(getId(complexUrl));
     }
 
     @Override
     public boolean acceptUrl(String videoUrl) {
-        return videoUrl.contains("youtube") ||
-                videoUrl.contains("youtu.be");
+        videoUrl = videoUrl.toLowerCase();
+        if(videoUrl.contains("youtube") ||
+                videoUrl.contains("youtu.be")) {
+            // bad programming I know
+            try {
+                getId(videoUrl);
+                return true;
+            } catch (Exception e) {
+                return false;
+            }
+        } else {
+            return false;
+        }
     }
 }

app/src/main/java/org/schabi/newpipe/extractor/services/youtube/YoutubeSuggestionExtractor.java

@@ -4,7 +4,7 @@ import org.schabi.newpipe.extractor.Downloader;
 import org.schabi.newpipe.extractor.NewPipe;
 import org.schabi.newpipe.extractor.exceptions.ExtractionException;
 import org.schabi.newpipe.extractor.exceptions.ParsingException;
-import org.schabi.newpipe.extractor.search.SuggestionExtractor;
+import org.schabi.newpipe.extractor.SuggestionExtractor;
 import org.w3c.dom.Node;
 import org.w3c.dom.NodeList;
 import org.xml.sax.InputSource;
@@ -15,7 +15,6 @@ import java.io.IOException;
 import java.net.URLEncoder;
 import java.util.ArrayList;
 import java.util.List;
-import java.util.Vector;
 
 import javax.xml.parsers.DocumentBuilder;
 import javax.xml.parsers.DocumentBuilderFactory;

app/src/main/java/org/schabi/newpipe/extractor/stream_info/StreamExtractor.java

@@ -35,7 +35,7 @@ public abstract class StreamExtractor {
     private int serviceId;
     private String url;
     private UrlIdHandler urlIdHandler;
-    private StreamPreviewInfoCollector previewInfoCollector;
+    private StreamInfoItemCollector previewInfoCollector;
 
     public class ExtractorInitException extends ExtractionException {
         public ExtractorInitException(String message) {
@@ -61,10 +61,10 @@ public abstract class StreamExtractor {
     public StreamExtractor(UrlIdHandler urlIdHandler, String url, int serviceId) {
         this.serviceId = serviceId;
         this.urlIdHandler = urlIdHandler;
-        previewInfoCollector = new StreamPreviewInfoCollector(urlIdHandler, serviceId);
+        previewInfoCollector = new StreamInfoItemCollector(urlIdHandler, serviceId);
     }
 
-    protected StreamPreviewInfoCollector getStreamPreviewInfoCollector() {
+    protected StreamInfoItemCollector getStreamPreviewInfoCollector() {
         return previewInfoCollector;
     }
 
@@ -94,8 +94,8 @@ public abstract class StreamExtractor {
     public abstract String getAverageRating() throws ParsingException;
     public abstract int getLikeCount() throws ParsingException;
     public abstract int getDislikeCount() throws ParsingException;
-    public abstract StreamPreviewInfoExtractor getNextVideo() throws ParsingException;
-    public abstract StreamPreviewInfoCollector getRelatedVideos() throws ParsingException;
+    public abstract StreamInfoItemExtractor getNextVideo() throws ParsingException;
+    public abstract StreamInfoItemCollector getRelatedVideos() throws ParsingException;
     public abstract String getPageUrl();
     public abstract StreamInfo.StreamType getStreamType() throws ParsingException;
     public int getServiceId() {

app/src/main/java/org/schabi/newpipe/extractor/stream_info/StreamInfo.java

@@ -2,6 +2,7 @@ package org.schabi.newpipe.extractor.stream_info;
 
 import org.schabi.newpipe.extractor.AbstractStreamInfo;
 import org.schabi.newpipe.extractor.DashMpdParser;
+import org.schabi.newpipe.extractor.InfoItem;
 import org.schabi.newpipe.extractor.UrlIdHandler;
 import org.schabi.newpipe.extractor.exceptions.ExtractionException;
 
@@ -55,14 +56,14 @@ public class StreamInfo extends AbstractStreamInfo {
         this.view_count = avi.view_count;
 
         //todo: better than this
-        if(avi instanceof StreamPreviewInfo) {
+        if(avi instanceof StreamInfoItem) {
             //shitty String to convert code
             /*
-            String dur = ((StreamPreviewInfo)avi).duration;
+            String dur = ((StreamInfoItem)avi).duration;
             int minutes = Integer.parseInt(dur.substring(0, dur.indexOf(":")));
             int seconds = Integer.parseInt(dur.substring(dur.indexOf(":")+1, dur.length()));
             */
-            this.duration = ((StreamPreviewInfo)avi).duration;
+            this.duration = ((StreamInfoItem)avi).duration;
         }
     }
 
@@ -241,12 +242,12 @@ public class StreamInfo extends AbstractStreamInfo {
             // get next video
             if(streamInfo.next_video != null)
             {
-                StreamPreviewInfoCollector c = new StreamPreviewInfoCollector(
+                StreamInfoItemCollector c = new StreamInfoItemCollector(
                         extractor.getUrlIdHandler(), extractor.getServiceId());
-                StreamPreviewInfoExtractor nextVideo = extractor.getNextVideo();
+                StreamInfoItemExtractor nextVideo = extractor.getNextVideo();
                 c.commit(nextVideo);
                 if(c.getItemList().size() != 0) {
-                    streamInfo.next_video = c.getItemList().get(0);
+                    streamInfo.next_video = (StreamInfoItem) c.getItemList().get(0);
                 }
                 streamInfo.errors.addAll(c.getErrors());
             }
@@ -256,7 +257,7 @@ public class StreamInfo extends AbstractStreamInfo {
         }
         try {
             // get related videos
-            StreamPreviewInfoCollector c = extractor.getRelatedVideos();
+            StreamInfoItemCollector c = extractor.getRelatedVideos();
             streamInfo.related_streams = c.getItemList();
             streamInfo.errors.addAll(c.getErrors());
         } catch(Exception e) {
@@ -284,8 +285,8 @@ public class StreamInfo extends AbstractStreamInfo {
     public int like_count = -1;
     public int dislike_count = -1;
     public String average_rating = "";
-    public StreamPreviewInfo next_video = null;
-    public List<StreamPreviewInfo> related_streams = null;
+    public StreamInfoItem next_video = null;
+    public List<InfoItem> related_streams = null;
     //in seconds. some metadata is not passed using a StreamInfo object!
     public int start_position = 0;
 

app/src/main/java/org/schabi/newpipe/extractor/stream_info/StreamInfoItem.java

@@ -4,7 +4,7 @@ package org.schabi.newpipe.extractor.stream_info;
  * Created by Christian Schabesberger on 26.08.15.
  *
  * Copyright (C) Christian Schabesberger 2016 <chris.schabesberger@mailbox.org>
- * StreamPreviewInfo.java is part of NewPipe.
+ * StreamInfoItem.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
@@ -21,8 +21,21 @@ package org.schabi.newpipe.extractor.stream_info;
  */
 
 import org.schabi.newpipe.extractor.AbstractStreamInfo;
+import org.schabi.newpipe.extractor.InfoItem;
 
 /**Info object for previews of unopened videos, eg search results, related videos*/
-public class StreamPreviewInfo extends AbstractStreamInfo {
+public class StreamInfoItem extends AbstractStreamInfo implements InfoItem {
     public int duration;
+
+    public InfoType infoType() {
+        return InfoType.STREAM;
+    }
+
+    public String getTitle() {
+        return title;
+    }
+
+    public String getLink() {
+        return webpage_url;
+    }
 }

app/src/main/java/org/schabi/newpipe/extractor/stream_info/StreamInfoItemCollector.java

@@ -0,0 +1,99 @@
+package org.schabi.newpipe.extractor.stream_info;
+
+import org.schabi.newpipe.extractor.InfoItemCollector;
+import org.schabi.newpipe.extractor.NewPipe;
+import org.schabi.newpipe.extractor.UrlIdHandler;
+import org.schabi.newpipe.extractor.exceptions.FoundAdException;
+import org.schabi.newpipe.extractor.exceptions.ParsingException;
+
+import java.util.List;
+import java.util.Vector;
+
+/**
+ * Created by Christian Schabesberger on 28.02.16.
+ *
+ * Copyright (C) Christian Schabesberger 2016 <chris.schabesberger@mailbox.org>
+ * StreamInfoItemCollector.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 StreamInfoItemCollector extends InfoItemCollector {
+
+    private UrlIdHandler urlIdHandler;
+
+    public StreamInfoItemCollector(UrlIdHandler handler, int serviceId) {
+        super(serviceId);
+        urlIdHandler = handler;
+    }
+
+    private UrlIdHandler getUrlIdHandler() {
+        return urlIdHandler;
+    }
+
+    public StreamInfoItem extract(StreamInfoItemExtractor extractor) throws Exception {
+
+        StreamInfoItem resultItem = new StreamInfoItem();
+        // importand information
+        resultItem.service_id = getServiceId();
+        resultItem.webpage_url = extractor.getWebPageUrl();
+        if (getUrlIdHandler() == null) {
+            throw new ParsingException("Error: UrlIdHandler not set");
+        } else if (!resultItem.webpage_url.isEmpty()) {
+            resultItem.id = NewPipe.getService(getServiceId())
+                    .getStreamUrlIdHandlerInstance()
+                    .getId(resultItem.webpage_url);
+        }
+        resultItem.title = extractor.getTitle();
+        resultItem.stream_type = extractor.getStreamType();
+
+        // optional information
+        try {
+            resultItem.duration = extractor.getDuration();
+        } catch (Exception e) {
+            addError(e);
+        }
+        try {
+            resultItem.uploader = extractor.getUploader();
+        } catch (Exception e) {
+            addError(e);
+        }
+        try {
+            resultItem.upload_date = extractor.getUploadDate();
+        } catch (Exception e) {
+            addError(e);
+        }
+        try {
+            resultItem.view_count = extractor.getViewCount();
+        } catch (Exception e) {
+            addError(e);
+        }
+        try {
+            resultItem.thumbnail_url = extractor.getThumbnailUrl();
+        } catch (Exception e) {
+            addError(e);
+        }
+        return resultItem;
+    }
+
+    public void commit(StreamInfoItemExtractor extractor) throws ParsingException {
+        try {
+            addItem(extract(extractor));
+        } catch(FoundAdException ae) {
+            System.out.println("AD_WARNING: " + ae.getMessage());
+        } catch (Exception e) {
+            addError(e);
+        }
+    }
+}

app/src/main/java/org/schabi/newpipe/extractor/stream_info/StreamInfoItemExtractor.java

@@ -7,7 +7,7 @@ import org.schabi.newpipe.extractor.exceptions.ParsingException;
  * Created by Christian Schabesberger on 28.02.16.
  *
  * Copyright (C) Christian Schabesberger 2016 <chris.schabesberger@mailbox.org>
- * StreamPreviewInfoExtractor.java is part of NewPipe.
+ * StreamInfoItemExtractor.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
@@ -23,7 +23,7 @@ import org.schabi.newpipe.extractor.exceptions.ParsingException;
  * along with NewPipe.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-public interface StreamPreviewInfoExtractor {
+public interface StreamInfoItemExtractor {
     AbstractStreamInfo.StreamType getStreamType() throws ParsingException;
     String getWebPageUrl() throws ParsingException;
     String getTitle() throws ParsingException;

app/src/main/java/org/schabi/newpipe/extractor/stream_info/StreamPreviewInfoCollector.java

@@ -1,101 +0,0 @@
-package org.schabi.newpipe.extractor.stream_info;
-
-import org.schabi.newpipe.extractor.UrlIdHandler;
-import org.schabi.newpipe.extractor.exceptions.FoundAdException;
-import org.schabi.newpipe.extractor.exceptions.ParsingException;
-import org.schabi.newpipe.extractor.services.youtube.YoutubeStreamUrlIdHandler;
-
-import java.util.List;
-import java.util.Vector;
-
-/**
- * Created by Christian Schabesberger on 28.02.16.
- *
- * Copyright (C) Christian Schabesberger 2016 <chris.schabesberger@mailbox.org>
- * StreamPreviewInfoCollector.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 StreamPreviewInfoCollector {
-    private List<StreamPreviewInfo> itemList = new Vector<>();
-    private List<Throwable> errors = new Vector<>();
-    private UrlIdHandler urlIdHandler;
-    private int serviceId = -1;
-
-    public StreamPreviewInfoCollector(UrlIdHandler handler, int serviceId) {
-        urlIdHandler = handler;
-        this.serviceId = serviceId;
-    }
-
-    public List<StreamPreviewInfo> getItemList() {
-        return itemList;
-    }
-
-    public List<Throwable> getErrors() {
-        return errors;
-    }
-
-    public void addError(Exception e) {
-        errors.add(e);
-    }
-
-    public void commit(StreamPreviewInfoExtractor extractor) throws ParsingException {
-        try {
-            StreamPreviewInfo resultItem = new StreamPreviewInfo();
-            // importand information
-            resultItem.service_id = serviceId;
-            resultItem.webpage_url = extractor.getWebPageUrl();
-            if (urlIdHandler == null) {
-                throw new ParsingException("Error: UrlIdHandler not set");
-            } else if(!resultItem.webpage_url.isEmpty()) {
-                resultItem.id = (new YoutubeStreamUrlIdHandler()).getId(resultItem.webpage_url);
-            }
-            resultItem.title = extractor.getTitle();
-            resultItem.stream_type = extractor.getStreamType();
-
-            // optional information
-            try {
-                resultItem.duration = extractor.getDuration();
-            } catch (Exception e) {
-                addError(e);
-            }
-            try {
-                resultItem.uploader = extractor.getUploader();
-            } catch (Exception e) {
-                addError(e);
-            }
-            try {
-                resultItem.upload_date = extractor.getUploadDate();
-            } catch (Exception e) {
-                addError(e);
-            }
-            try {
-                resultItem.view_count = extractor.getViewCount();
-            } catch (Exception e) {
-                addError(e);
-            }
-            try {
-                resultItem.thumbnail_url = extractor.getThumbnailUrl();
-            } catch (Exception e) {
-                addError(e);
-            }
-            itemList.add(resultItem);
-        } catch(FoundAdException ae) {
-            System.out.println("AD_WARNING: " + ae.getMessage());
-        } catch (Exception e) {
-            addError(e);
-        }
-    }
-}

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

@@ -0,0 +1,54 @@
+package org.schabi.newpipe.info_list;
+
+import android.view.View;
+import android.widget.Button;
+import android.widget.TextView;
+
+import org.schabi.newpipe.R;
+import org.schabi.newpipe.extractor.InfoItem;
+
+import de.hdodenhof.circleimageview.CircleImageView;
+
+/**
+ * Created by Christian Schabesberger on 12.02.17.
+ *
+ * Copyright (C) Christian Schabesberger 2016 <chris.schabesberger@mailbox.org>
+ * ChannelInfoItemHolder .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 ChannelInfoItemHolder extends InfoItemHolder {
+    public final CircleImageView itemThumbnailView;
+    public final TextView itemChannelTitleView;
+    public final TextView itemSubscriberCountView;
+    public final TextView itemVideoCountView;
+    public final TextView itemChannelDescriptionView;
+    public final Button itemButton;
+
+    ChannelInfoItemHolder(View v) {
+        super(v);
+        itemThumbnailView = (CircleImageView) v.findViewById(R.id.itemThumbnailView);
+        itemChannelTitleView = (TextView) v.findViewById(R.id.itemChannelTitleView);
+        itemSubscriberCountView = (TextView) v.findViewById(R.id.itemSubscriberCountView);
+        itemVideoCountView = (TextView) v.findViewById(R.id.itemVideoCountView);
+        itemChannelDescriptionView = (TextView) v.findViewById(R.id.itemChannelDescriptionView);
+        itemButton = (Button) v.findViewById(R.id.item_button);
+    }
+
+    @Override
+    public InfoItem.InfoType infoType() {
+        return InfoItem.InfoType.CHANNEL;
+    }
+}

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

@@ -1,9 +1,11 @@
 package org.schabi.newpipe.info_list;
 
 import android.app.Activity;
+import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
+import android.widget.AdapterView;
 
 import com.nostra13.universalimageloader.core.DisplayImageOptions;
 import com.nostra13.universalimageloader.core.ImageLoader;
@@ -11,7 +13,9 @@ import com.nostra13.universalimageloader.core.ImageLoader;
 import org.schabi.newpipe.ImageErrorLoadingListener;
 import org.schabi.newpipe.R;
 import org.schabi.newpipe.extractor.AbstractStreamInfo;
-import org.schabi.newpipe.extractor.stream_info.StreamPreviewInfo;
+import org.schabi.newpipe.extractor.InfoItem;
+import org.schabi.newpipe.extractor.channel.ChannelInfoItem;
+import org.schabi.newpipe.extractor.stream_info.StreamInfoItem;
 
 /**
  * Created by Christian Schabesberger on 26.09.16.
@@ -35,8 +39,17 @@ import org.schabi.newpipe.extractor.stream_info.StreamPreviewInfo;
 
 public class InfoItemBuilder {
 
-    public interface OnItemSelectedListener {
-        void selected(String url);
+    final String viewsS;
+    final String videosS;
+    final String subsS;
+
+    final String thousand;
+    final String million;
+    final String billion;
+
+    private static final String TAG = InfoItemBuilder.class.toString();
+    public interface OnInfoItemSelectedListener {
+        void selected(String url, int serviceId);
     }
 
     private Activity activity = null;
@@ -44,18 +57,75 @@ public class InfoItemBuilder {
     private ImageLoader imageLoader = ImageLoader.getInstance();
     private DisplayImageOptions displayImageOptions =
             new DisplayImageOptions.Builder().cacheInMemory(true).build();
-    private OnItemSelectedListener onItemSelectedListener;
+    private OnInfoItemSelectedListener onStreamInfoItemSelectedListener;
+    private OnInfoItemSelectedListener onChannelInfoItemSelectedListener;
 
     public InfoItemBuilder(Activity a, View rootView) {
         activity = a;
         this.rootView = rootView;
+        viewsS = a.getString(R.string.views);
+        videosS = a.getString(R.string.videos);
+        subsS = a.getString(R.string.subscriber);
+        thousand = a.getString(R.string.short_thousand);
+        million = a.getString(R.string.short_million);
+        billion = a.getString(R.string.short_billion);
     }
 
-    public void setOnItemSelectedListener(OnItemSelectedListener onItemSelectedListener) {
-        this.onItemSelectedListener = onItemSelectedListener;
+    public void setOnStreamInfoItemSelectedListener(
+            OnInfoItemSelectedListener listener) {
+        this.onStreamInfoItemSelectedListener = listener;
     }
 
-    public void buildByHolder(InfoItemHolder holder, final StreamPreviewInfo info) {
+    public void setOnChannelInfoItemSelectedListener(
+            OnInfoItemSelectedListener listener) {
+        this.onChannelInfoItemSelectedListener = listener;
+    }
+
+    public void buildByHolder(InfoItemHolder holder, final InfoItem i) {
+        if(i.infoType() != holder.infoType())
+            return;
+        switch(i.infoType()) {
+            case STREAM:
+                buildStreamInfoItem((StreamInfoItemHolder) holder, (StreamInfoItem) i);
+                break;
+            case CHANNEL:
+                buildChannelInfoItem((ChannelInfoItemHolder) holder, (ChannelInfoItem) i);
+                break;
+            case PLAYLIST:
+                Log.e(TAG, "Not yet implemented");
+                break;
+            default:
+                Log.e(TAG, "Trollolo");
+        }
+    }
+
+    public View buildView(ViewGroup parent, final InfoItem info) {
+        View itemView = null;
+        InfoItemHolder holder = null;
+        switch(info.infoType()) {
+            case STREAM:
+                itemView = LayoutInflater.from(parent.getContext())
+                    .inflate(R.layout.stream_item, parent, false);
+                holder = new StreamInfoItemHolder(itemView);
+                break;
+            case CHANNEL:
+                itemView = LayoutInflater.from(parent.getContext())
+                        .inflate(R.layout.channel_item, parent, false);
+                holder = new ChannelInfoItemHolder(itemView);
+                break;
+            case PLAYLIST:
+                Log.e(TAG, "Not yet implemented");
+            default:
+                Log.e(TAG, "Trollolo");
+        }
+        buildByHolder(holder, info);
+        return itemView;
+    }
+
+    private void buildStreamInfoItem(StreamInfoItemHolder holder, final StreamInfoItem info) {
+        if(info.infoType() != InfoItem.InfoType.STREAM) {
+            Log.e("InfoItemBuilder", "Info type not yet supported");
+        }
         // fill holder with information
         holder.itemVideoTitleView.setText(info.title);
         if(info.uploader != null && !info.uploader.isEmpty()) {
@@ -92,29 +162,55 @@ public class InfoItemBuilder {
         holder.itemButton.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View view) {
-                onItemSelectedListener.selected(info.webpage_url);
+                onStreamInfoItemSelectedListener.selected(info.webpage_url, info.service_id);
             }
         });
     }
 
-    public View buildView(ViewGroup parent, final StreamPreviewInfo info) {
-        View streamPreviewView = LayoutInflater.from(parent.getContext())
-                .inflate(R.layout.video_item, parent, false);
-        InfoItemHolder holder = new InfoItemHolder(streamPreviewView);
-        buildByHolder(holder, info);
-        return streamPreviewView;
+    private void buildChannelInfoItem(ChannelInfoItemHolder holder, final ChannelInfoItem info) {
+        holder.itemChannelTitleView.setText(info.getTitle());
+        holder.itemSubscriberCountView.setText(shortSubscriber(info.subscriberCount) + " • ");
+        holder.itemVideoCountView.setText(info.videoAmount + " " + videosS);
+        holder.itemChannelDescriptionView.setText(info.description);
+
+        holder.itemThumbnailView.setImageResource(R.drawable.buddy_channel_item);
+        if(info.thumbnailUrl != null && !info.thumbnailUrl.isEmpty()) {
+            imageLoader.displayImage(info.thumbnailUrl,
+                    holder.itemThumbnailView,
+                    displayImageOptions,
+                    new ImageErrorLoadingListener(activity, rootView, info.serviceId));
+        }
+
+        holder.itemButton.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                onChannelInfoItemSelectedListener.selected(info.getLink(), info.serviceId);
+            }
+        });
     }
 
 
-    public static String shortViewCount(Long viewCount){
+    public String shortViewCount(Long viewCount){
         if(viewCount >= 1000000000){
-            return Long.toString(viewCount/1000000000)+"B views";
+            return Long.toString(viewCount/1000000000)+ billion + " " + viewsS;
         }else if(viewCount>=1000000){
-            return Long.toString(viewCount/1000000)+"M views";
+            return Long.toString(viewCount/1000000)+ million + " " + viewsS;
         }else if(viewCount>=1000){
-            return Long.toString(viewCount/1000)+"K views";
+            return Long.toString(viewCount/1000)+ thousand + " " + viewsS;
         }else {
-            return Long.toString(viewCount)+" views";
+            return Long.toString(viewCount)+ " " + viewsS;
+        }
+    }
+
+    public String shortSubscriber(Long viewCount){
+        if(viewCount >= 1000000000){
+            return Long.toString(viewCount/1000000000)+ billion + " " + subsS;
+        }else if(viewCount>=1000000){
+            return Long.toString(viewCount/1000000)+ million + " " + subsS;
+        }else if(viewCount>=1000){
+            return Long.toString(viewCount/1000)+ thousand + " " + subsS;
+        }else {
+            return Long.toString(viewCount)+ " " + subsS;
         }
     }
 

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

@@ -2,14 +2,11 @@ package org.schabi.newpipe.info_list;
 
 import android.support.v7.widget.RecyclerView;
 import android.view.View;
-import android.widget.Button;
-import android.widget.ImageView;
-import android.widget.TextView;
 
-import org.schabi.newpipe.R;
+import org.schabi.newpipe.extractor.InfoItem;
 
 /**
- * Created by Christian Schabesberger on 01.08.16.
+ * Created by Christian Schabesberger on 12.02.17.
  *
  * Copyright (C) Christian Schabesberger 2016 <chris.schabesberger@mailbox.org>
  * InfoItemHolder.java is part of NewPipe.
@@ -28,24 +25,9 @@ import org.schabi.newpipe.R;
  * along with NewPipe.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-public class InfoItemHolder extends RecyclerView.ViewHolder {
-
-    public ImageView itemThumbnailView;
-    public TextView itemVideoTitleView,
-            itemUploaderView,
-            itemDurationView,
-            itemUploadDateView,
-            itemViewCountView;
-    public Button itemButton;
-
+public abstract class InfoItemHolder extends RecyclerView.ViewHolder {
     public InfoItemHolder(View v) {
         super(v);
-        itemThumbnailView = (ImageView) v.findViewById(R.id.itemThumbnailView);
-        itemVideoTitleView = (TextView) v.findViewById(R.id.itemVideoTitleView);
-        itemUploaderView = (TextView) v.findViewById(R.id.itemUploaderView);
-        itemDurationView = (TextView) v.findViewById(R.id.itemDurationView);
-        itemUploadDateView = (TextView) v.findViewById(R.id.itemUploadDateView);
-        itemViewCountView = (TextView) v.findViewById(R.id.itemViewCountView);
-        itemButton = (Button) v.findViewById(R.id.item_button);
     }
+    public abstract InfoItem.InfoType infoType();
 }

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

@@ -2,12 +2,13 @@ package org.schabi.newpipe.info_list;
 
 import android.app.Activity;
 import android.support.v7.widget.RecyclerView;
+import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 
 import org.schabi.newpipe.R;
-import org.schabi.newpipe.extractor.stream_info.StreamPreviewInfo;
+import org.schabi.newpipe.extractor.InfoItem;
 
 import java.util.List;
 import java.util.Vector;
@@ -33,46 +34,79 @@ import java.util.Vector;
  */
 
 public class InfoListAdapter extends RecyclerView.Adapter<InfoItemHolder> {
+    private static final String TAG = InfoListAdapter.class.toString();
 
-    InfoItemBuilder infoItemBuilder = null;
-    List<StreamPreviewInfo> streamList = new Vector<>();
+    private final InfoItemBuilder infoItemBuilder;
+    private final List<InfoItem> infoItemList;
 
     public InfoListAdapter(Activity a, View rootView) {
         infoItemBuilder = new InfoItemBuilder(a, rootView);
+        infoItemList = new Vector<>();
     }
 
-    public void setOnItemSelectedListener
-            (InfoItemBuilder.OnItemSelectedListener onItemSelectedListener) {
-        infoItemBuilder.setOnItemSelectedListener(onItemSelectedListener);
+    public void setOnStreamInfoItemSelectedListener
+            (InfoItemBuilder.OnInfoItemSelectedListener listener) {
+        infoItemBuilder.setOnStreamInfoItemSelectedListener(listener);
     }
 
-    public void addStreamItemList(List<StreamPreviewInfo> videos) {
+    public void setOnChannelInfoItemSelectedListener
+            (InfoItemBuilder.OnInfoItemSelectedListener listener) {
+        infoItemBuilder.setOnChannelInfoItemSelectedListener(listener);
+    }
+
+    public void addInfoItemList(List<InfoItem> videos) {
         if(videos!= null) {
-            streamList.addAll(videos);
+            infoItemList.addAll(videos);
             notifyDataSetChanged();
         }
     }
 
     public void clearSteamItemList() {
-        streamList = new Vector<>();
+        infoItemList.clear();
         notifyDataSetChanged();
     }
 
     @Override
     public int getItemCount() {
-        return streamList.size();
+        return infoItemList.size();
+    }
+
+    // don't ask why we have to do that this way... it's android accept it -.-
+    @Override
+    public int getItemViewType(int position) {
+        switch(infoItemList.get(position).infoType()) {
+            case STREAM:
+                return 0;
+            case CHANNEL:
+                return 1;
+            case PLAYLIST:
+                return 2;
+            default:
+                Log.e(TAG, "Trollolo");
+                return -1;
+        }
     }
 
     @Override
-    public InfoItemHolder onCreateViewHolder(ViewGroup parent, int i) {
-        View itemView = LayoutInflater.from(parent.getContext())
-                .inflate(R.layout.video_item, parent, false);
-
-        return new InfoItemHolder(itemView);
+    public InfoItemHolder onCreateViewHolder(ViewGroup parent, int type) {
+        switch(type) {
+            case 0:
+                return new StreamInfoItemHolder(LayoutInflater.from(parent.getContext())
+                        .inflate(R.layout.stream_item, parent, false));
+            case 1:
+                return new ChannelInfoItemHolder(LayoutInflater.from(parent.getContext())
+                        .inflate(R.layout.channel_item, parent, false));
+            case 2:
+                Log.e(TAG, "Playlist is not yet implemented");
+                return null;
+            default:
+                Log.e(TAG, "Trollolo");
+                return null;
+        }
     }
 
     @Override
     public void onBindViewHolder(InfoItemHolder holder, int i) {
-        infoItemBuilder.buildByHolder(holder, streamList.get(i));
+        infoItemBuilder.buildByHolder(holder, infoItemList.get(i));
     }
 }

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

@@ -0,0 +1,58 @@
+package org.schabi.newpipe.info_list;
+
+import android.icu.text.IDNA;
+import android.support.v7.widget.RecyclerView;
+import android.view.View;
+import android.widget.Button;
+import android.widget.ImageView;
+import android.widget.TextView;
+
+import org.schabi.newpipe.R;
+import org.schabi.newpipe.extractor.InfoItem;
+
+/**
+ * Created by Christian Schabesberger on 01.08.16.
+ *
+ * Copyright (C) Christian Schabesberger 2016 <chris.schabesberger@mailbox.org>
+ * StreamInfoItemHolder.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 StreamInfoItemHolder extends InfoItemHolder {
+
+    public final ImageView itemThumbnailView;
+    public final TextView itemVideoTitleView,
+            itemUploaderView,
+            itemDurationView,
+            itemUploadDateView,
+            itemViewCountView;
+    public final Button itemButton;
+
+    public StreamInfoItemHolder(View v) {
+        super(v);
+        itemThumbnailView = (ImageView) v.findViewById(R.id.itemThumbnailView);
+        itemVideoTitleView = (TextView) v.findViewById(R.id.itemVideoTitleView);
+        itemUploaderView = (TextView) v.findViewById(R.id.itemUploaderView);
+        itemDurationView = (TextView) v.findViewById(R.id.itemDurationView);
+        itemUploadDateView = (TextView) v.findViewById(R.id.itemUploadDateView);
+        itemViewCountView = (TextView) v.findViewById(R.id.itemViewCountView);
+        itemButton = (Button) v.findViewById(R.id.item_button);
+    }
+
+    @Override
+    public InfoItem.InfoType infoType() {
+        return InfoItem.InfoType.STREAM;
+    }
+}

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

@@ -27,6 +27,7 @@ import org.schabi.newpipe.BuildConfig;
 import org.schabi.newpipe.R;
 import org.schabi.newpipe.detail.VideoItemDetailActivity;
 import org.schabi.newpipe.detail.VideoItemDetailFragment;
+import org.schabi.newpipe.util.NavStack;
 
 import java.io.IOException;
 import java.util.Arrays;
@@ -355,8 +356,8 @@ public class BackgroundPlayer extends Service /*implements MediaPlayer.OnPrepare
             //build intent to return to video, on tapping notification
             Intent openDetailViewIntent = new Intent(getApplicationContext(),
                     VideoItemDetailActivity.class);
-            openDetailViewIntent.putExtra(VideoItemDetailFragment.STREAMING_SERVICE, serviceId);
-            openDetailViewIntent.putExtra(VideoItemDetailFragment.VIDEO_URL, webUrl);
+            openDetailViewIntent.putExtra(NavStack.SERVICE_ID, serviceId);
+            openDetailViewIntent.putExtra(NavStack.URL, webUrl);
             openDetailViewIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
             PendingIntent openDetailView = PendingIntent.getActivity(owner, noteID,
                     openDetailViewIntent, PendingIntent.FLAG_UPDATE_CURRENT);

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

@@ -14,9 +14,9 @@ import android.preference.PreferenceManager;
 import android.support.design.widget.Snackbar;
 import android.support.v4.app.NavUtils;
 import android.support.v7.app.ActionBar;
-import android.support.v7.app.AppCompatActivity;
 import android.os.Bundle;
 import android.os.Handler;
+import android.support.v7.app.AppCompatActivity;
 import android.util.Log;
 import android.view.Menu;
 import android.view.MenuInflater;
@@ -35,6 +35,7 @@ import org.schabi.newpipe.BuildConfig;
 import org.schabi.newpipe.Downloader;
 import org.schabi.newpipe.MainActivity;
 import org.schabi.newpipe.R;
+import org.schabi.newpipe.ThemableActivity;
 import org.schabi.newpipe.extractor.Parser;
 
 import java.io.PrintWriter;
@@ -65,7 +66,7 @@ import java.util.Vector;
  * along with NewPipe.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-public class ErrorActivity extends AppCompatActivity {
+public class ErrorActivity extends ThemableActivity {
     public static class ErrorInfo implements Parcelable {
         public int userAction;
         public String request;
@@ -161,6 +162,10 @@ public class ErrorActivity extends AppCompatActivity {
     private TextView infoView;
     private TextView errorMessageView;
 
+    public static void reportUiError(final AppCompatActivity activity, final Throwable el) {
+        reportError(activity, el, activity.getClass(), null, ErrorInfo.make(UI_ERROR, "none", "", R.string.app_ui_crash));
+    }
+
     public static void reportError(final Context context, final List<Throwable> el,
                                    final Class returnAcitivty, View rootView, final ErrorInfo errorInfo) {
 
@@ -297,6 +302,11 @@ public class ErrorActivity extends AppCompatActivity {
         }
 
         errorView.setText(formErrorText(errorList));
+
+        //print stack trace once again for debugging:
+        for(String e : errorList) {
+            Log.e(TAG, e);
+        }
     }
 
     @Override

app/src/main/java/org/schabi/newpipe/search_fragment/SearchInfoItemFragment.java

@@ -19,8 +19,10 @@ import android.view.inputmethod.InputMethodManager;
 import android.widget.ProgressBar;
 import android.widget.Toast;
 
+import org.schabi.newpipe.ChannelActivity;
 import org.schabi.newpipe.ReCaptchaActivity;
 import org.schabi.newpipe.extractor.NewPipe;
+import org.schabi.newpipe.extractor.search.SearchEngine;
 import org.schabi.newpipe.extractor.search.SearchResult;
 import org.schabi.newpipe.info_list.InfoItemBuilder;
 import org.schabi.newpipe.report.ErrorActivity;
@@ -28,6 +30,9 @@ import org.schabi.newpipe.R;
 import org.schabi.newpipe.detail.VideoItemDetailActivity;
 import org.schabi.newpipe.detail.VideoItemDetailFragment;
 import org.schabi.newpipe.info_list.InfoListAdapter;
+import org.schabi.newpipe.util.NavStack;
+
+import java.util.EnumSet;
 
 import static android.app.Activity.RESULT_OK;
 import static org.schabi.newpipe.ReCaptchaActivity.RECAPTCHA_REQUEST;
@@ -56,13 +61,18 @@ public class SearchInfoItemFragment extends Fragment {
 
     private static final String TAG = SearchInfoItemFragment.class.toString();
 
+    private EnumSet<SearchEngine.Filter> filter =
+            EnumSet.of(SearchEngine.Filter.CHANNEL, SearchEngine.Filter.STREAM);
+
+    /**
+     * Listener for search queries
+     */
     public class SearchQueryListener implements SearchView.OnQueryTextListener {
 
         @Override
         public boolean onQueryTextSubmit(String query) {
             Activity a = getActivity();
             try {
-                searchQuery = query;
                 search(query);
 
                 // hide virtual keyboard
@@ -89,8 +99,6 @@ public class SearchInfoItemFragment extends Fragment {
             } catch (Exception e) {
                 e.printStackTrace();
             }
-            View bg = a.findViewById(R.id.mainBG);
-            bg.setVisibility(View.GONE);
             return true;
         }
 
@@ -108,12 +116,10 @@ public class SearchInfoItemFragment extends Fragment {
     private boolean isLoading = false;
 
     private ProgressBar loadingIndicator = null;
-    private SearchView searchView = null;
     private int pageNumber = 0;
     private SuggestionListAdapter suggestionListAdapter = null;
     private InfoListAdapter infoListAdapter = null;
     private LinearLayoutManager streamInfoListLayoutManager = null;
-    private RecyclerView recyclerView = null;
 
     // savedInstanceBundle arguments
     private static final String QUERY = "query";
@@ -126,23 +132,32 @@ public class SearchInfoItemFragment extends Fragment {
     public SearchInfoItemFragment() {
     }
 
-    // TODO: Customize parameter initialization
     @SuppressWarnings("unused")
-    public static SearchInfoItemFragment newInstance(int columnCount) {
+    public static SearchInfoItemFragment newInstance(int streamingServiceId, String searchQuery) {
+        Bundle args = new Bundle();
+        args.putInt(STREAMING_SERVICE, streamingServiceId);
+        args.putString(QUERY, searchQuery);
         SearchInfoItemFragment fragment = new SearchInfoItemFragment();
+        fragment.setArguments(args);
         return fragment;
     }
 
     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-
+        searchQuery = "";
         if (savedInstanceState != null) {
             searchQuery = savedInstanceState.getString(QUERY);
             streamingServiceId = savedInstanceState.getInt(STREAMING_SERVICE);
         } else {
             try {
-                streamingServiceId = NewPipe.getIdOfService("Youtube");
+                Bundle args = getArguments();
+                if(args != null) {
+                    searchQuery = args.getString(QUERY);
+                    streamingServiceId = args.getInt(STREAMING_SERVICE);
+                } else {
+                    streamingServiceId = NewPipe.getIdOfService("Youtube");
+                }
             } catch (Exception e) {
                 e.printStackTrace();
                 ErrorActivity.reportError(getActivity(), e, null,
@@ -153,13 +168,14 @@ public class SearchInfoItemFragment extends Fragment {
             }
         }
 
+        setHasOptionsMenu(true);
+
         SearchWorker sw = SearchWorker.getInstance();
         sw.setSearchWorkerResultListener(new SearchWorker.SearchWorkerResultListener() {
             @Override
             public void onResult(SearchResult result) {
-                infoListAdapter.addStreamItemList(result.resultList);
-                isLoading = false;
-                loadingIndicator.setVisibility(View.GONE);
+                infoListAdapter.addInfoItemList(result.resultList);
+                setDoneLoading();
             }
 
             @Override
@@ -167,8 +183,7 @@ public class SearchInfoItemFragment extends Fragment {
                 //setListShown(true);
                 Toast.makeText(getActivity(), getString(stringResource),
                         Toast.LENGTH_SHORT).show();
-                isLoading = false;
-                loadingIndicator.setVisibility(View.GONE);
+                setDoneLoading();
             }
 
             @Override
@@ -176,8 +191,7 @@ public class SearchInfoItemFragment extends Fragment {
                 //setListShown(true);
                 Toast.makeText(getActivity(), message,
                         Toast.LENGTH_LONG).show();
-                isLoading = false;
-                loadingIndicator.setVisibility(View.GONE);
+                setDoneLoading();
             }
 
             @Override
@@ -191,6 +205,7 @@ public class SearchInfoItemFragment extends Fragment {
                         RECAPTCHA_REQUEST);
             }
         });
+
     }
 
     @Override
@@ -200,24 +215,30 @@ public class SearchInfoItemFragment extends Fragment {
 
         Context context = view.getContext();
         loadingIndicator = (ProgressBar) view.findViewById(R.id.progressBar);
-        recyclerView = (RecyclerView) view.findViewById(R.id.list);
+        RecyclerView recyclerView = (RecyclerView) view.findViewById(R.id.list);
         streamInfoListLayoutManager = new LinearLayoutManager(context);
         recyclerView.setLayoutManager(streamInfoListLayoutManager);
 
         infoListAdapter = new InfoListAdapter(getActivity(),
                 getActivity().findViewById(android.R.id.content));
-        infoListAdapter.setOnItemSelectedListener(new InfoItemBuilder.OnItemSelectedListener() {
+        infoListAdapter.setOnStreamInfoItemSelectedListener(
+                new InfoItemBuilder.OnInfoItemSelectedListener() {
             @Override
-            public void selected(String url) {
-                Intent i = new Intent(getActivity(), VideoItemDetailActivity.class);
-                i.putExtra(VideoItemDetailFragment.STREAMING_SERVICE, streamingServiceId);
-                i.putExtra(VideoItemDetailFragment.VIDEO_URL, url);
-                getActivity().startActivity(i);
+            public void selected(String url, int serviceId) {
+                NavStack.getInstance()
+                    .openDetailActivity(getContext(), url, serviceId);
+            }
+        });
+        infoListAdapter.setOnChannelInfoItemSelectedListener(new InfoItemBuilder.OnInfoItemSelectedListener() {
+            @Override
+            public void selected(String url, int serviceId) {
+                NavStack.getInstance()
+                        .openChannelActivity(getContext(), url, serviceId);
             }
         });
         recyclerView.setAdapter(infoListAdapter);
-
-        recyclerView.setOnScrollListener(new RecyclerView.OnScrollListener() {
+        recyclerView.clearOnScrollListeners();
+        recyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
             @Override
             public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
                 int pastVisiblesItems, visibleItemCount, totalItemCount;
@@ -240,13 +261,18 @@ public class SearchInfoItemFragment extends Fragment {
     }
 
     @Override
-    public void onAttach(Context context) {
-        super.onAttach(context);
+    public void onStart() {
+        super.onStart();
+        if(!searchQuery.isEmpty()) {
+            search(searchQuery);
+        }
     }
 
     @Override
-    public void onDetach() {
-        super.onDetach();
+    public void onSaveInstanceState(Bundle outState) {
+        super.onSaveInstanceState(outState);
+        outState.putString(QUERY, searchQuery);
+        outState.putInt(STREAMING_SERVICE, streamingServiceId);
     }
 
     @Override
@@ -255,13 +281,34 @@ public class SearchInfoItemFragment extends Fragment {
         inflater.inflate(R.menu.search_menu, menu);
 
         MenuItem searchItem = menu.findItem(R.id.action_search);
-        searchView = (SearchView) searchItem.getActionView();
+        SearchView searchView = (SearchView) searchItem.getActionView();
         setupSearchView(searchView);
     }
 
     @Override
     public boolean onOptionsItemSelected(MenuItem item) {
-        return super.onOptionsItemSelected(item);
+        switch(item.getItemId()) {
+            case R.id.menu_filter_all:
+                changeFilter(item, EnumSet.of(SearchEngine.Filter.STREAM, SearchEngine.Filter.CHANNEL));
+                return true;
+            case R.id.menu_filter_video:
+                changeFilter(item, EnumSet.of(SearchEngine.Filter.STREAM));
+                return true;
+            case R.id.menu_filter_channel:
+                changeFilter(item, EnumSet.of(SearchEngine.Filter.CHANNEL));
+                return true;
+            default:
+                return false;
+        }
+    }
+
+    private void changeFilter(MenuItem item, EnumSet<SearchEngine.Filter> filter) {
+        this.filter = filter;
+        item.setChecked(true);
+        if(searchQuery != null && !searchQuery.isEmpty()) {
+            Log.d(TAG, "Fuck+ " + searchQuery);
+            search(searchQuery);
+        }
     }
 
     private void setupSearchView(SearchView searchView) {
@@ -278,14 +325,34 @@ public class SearchInfoItemFragment extends Fragment {
     private void search(String query) {
         infoListAdapter.clearSteamItemList();
         pageNumber = 0;
+        searchQuery = query;
         search(query, pageNumber);
+        hideBackground();
         loadingIndicator.setVisibility(View.VISIBLE);
     }
 
     private void search(String query, int page) {
         isLoading = true;
         SearchWorker sw = SearchWorker.getInstance();
-        sw.search(streamingServiceId, query, page, getActivity());
+        sw.search(streamingServiceId,
+                query,
+                page,
+                getActivity(),
+                filter);
+    }
+
+    private void setDoneLoading() {
+        this.isLoading = false;
+        loadingIndicator.setVisibility(View.GONE);
+    }
+
+    /**
+     * Hides the "dummy" background when no results are shown
+     */
+    private void hideBackground() {
+        View view = getView();
+        if(view == null) return;
+        view.findViewById(R.id.mainBG).setVisibility(View.GONE);
     }
 
     private void searchSuggestions(String query) {

app/src/main/java/org/schabi/newpipe/search_fragment/SearchSuggestionListener.java

@@ -25,8 +25,8 @@ import android.support.v7.widget.SearchView;
 
 public class SearchSuggestionListener implements SearchView.OnSuggestionListener{
 
-    private SearchView searchView;
-    private SuggestionListAdapter adapter;
+    private final SearchView searchView;
+    private final SuggestionListAdapter adapter;
 
     public SearchSuggestionListener(SearchView searchView, SuggestionListAdapter adapter) {
         this.searchView = searchView;

app/src/main/java/org/schabi/newpipe/search_fragment/SearchWorker.java

@@ -16,6 +16,7 @@ import org.schabi.newpipe.R;
 import org.schabi.newpipe.extractor.NewPipe;
 
 import java.io.IOException;
+import java.util.EnumSet;
 
 /**
  * Created by Christian Schabesberger on 02.08.16.
@@ -67,14 +68,21 @@ public class SearchWorker {
         public static final String YOUTUBE = "Youtube";
         private final String query;
         private final int page;
+        private final EnumSet<SearchEngine.Filter> filter;
         final Handler h = new Handler();
         private volatile boolean runs = true;
         private Activity a = null;
         private int serviceId = -1;
-        public SearchRunnable(int serviceId, String query, int page, Activity activity, int requestId) {
+        public SearchRunnable(int serviceId,
+                              String query,
+                              int page,
+                              EnumSet<SearchEngine.Filter> filter,
+                              Activity activity,
+                              int requestId) {
             this.serviceId = serviceId;
             this.query = query;
             this.page = page;
+            this.filter = filter;
             this.a = activity;
         }
         void terminate() {
@@ -82,6 +90,7 @@ public class SearchWorker {
         }
         @Override
         public void run() {
+            final String serviceName = NewPipe.getNameOfService(serviceId);
             SearchResult result = null;
             SearchEngine engine = null;
 
@@ -101,13 +110,14 @@ public class SearchWorker {
                 String searchLanguage = sp.getString(searchLanguageKey,
                         a.getString(R.string.default_language_value));
                 result = SearchResult
-                        .getSearchResult(engine, query, page, searchLanguage);
+                        .getSearchResult(engine, query, page, searchLanguage, filter);
                 if(runs) {
                     h.post(new ResultRunnable(result, requestId));
                 }
 
                 // look for errors during extraction
                 // soft errors:
+                View rootView = a.findViewById(android.R.id.content);
                 if(result != null &&
                         !result.errors.isEmpty()) {
                     Log.e(TAG, "OCCURRED ERRORS DURING SEARCH EXTRACTION:");
@@ -116,11 +126,17 @@ public class SearchWorker {
                         Log.e(TAG, "------");
                     }
 
-                    View rootView = a.findViewById(android.R.id.content);
-                    ErrorActivity.reportError(h, a, result.errors, null, rootView,
-                            ErrorActivity.ErrorInfo.make(ErrorActivity.SEARCHED,
-                        /* todo: this shoudl not be assigned static */  YOUTUBE, query, R.string.light_parsing_error));
-
+                    if(result.resultList.isEmpty()&& !result.errors.isEmpty()) {
+                        // if it compleatly failes dont show snackbar, instead show error directlry
+                        ErrorActivity.reportError(h, a, result.errors, null, null,
+                                ErrorActivity.ErrorInfo.make(ErrorActivity.SEARCHED,
+                                        serviceName, query, R.string.parsing_error));
+                    } else {
+                        // if it partly show snackbar
+                        ErrorActivity.reportError(h, a, result.errors, null, rootView,
+                                ErrorActivity.ErrorInfo.make(ErrorActivity.SEARCHED,
+                                        serviceName, query, R.string.light_parsing_error));
+                    }
                 }
                 // hard errors:
             } catch (ReCaptchaException e) {
@@ -148,8 +164,7 @@ public class SearchWorker {
             } catch(ExtractionException e) {
                 ErrorActivity.reportError(h, a, e, null, null,
                         ErrorActivity.ErrorInfo.make(ErrorActivity.SEARCHED,
-                        /* todo: this shoudl not be assigned static */
-                                YOUTUBE, query, R.string.parsing_error));
+                                serviceName, query, R.string.parsing_error));
                 //postNewErrorToast(h, R.string.parsing_error);
                 e.printStackTrace();
 
@@ -180,11 +195,15 @@ public class SearchWorker {
 
     }
 
-    public void search(int serviceId, String query, int page, Activity a) {
+    public void search(int serviceId,
+                       String query,
+                       int page,
+                       Activity a,
+                       EnumSet<SearchEngine.Filter> filter) {
         if(runnable != null) {
             terminate();
         }
-        runnable = new SearchRunnable(serviceId, query, page, a, requestId);
+        runnable = new SearchRunnable(serviceId, query, page, filter, a, requestId);
         Thread thread = new Thread(runnable);
         thread.start();
     }

app/src/main/java/org/schabi/newpipe/search_fragment/SuggestionListAdapter.java

@@ -3,10 +3,8 @@ package org.schabi.newpipe.search_fragment;
 import android.content.Context;
 import android.database.Cursor;
 import android.database.MatrixCursor;
-import android.support.v4.widget.CursorAdapter;
-import android.view.LayoutInflater;
+import android.support.v4.widget.ResourceCursorAdapter;
 import android.view.View;
-import android.view.ViewGroup;
 import android.widget.TextView;
 
 import java.util.List;
@@ -31,52 +29,56 @@ import java.util.List;
  * along with NewPipe.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-public class SuggestionListAdapter extends CursorAdapter {
+/**
+ * {@link ResourceCursorAdapter} to display suggestions.
+ */
+public class SuggestionListAdapter extends ResourceCursorAdapter {
+
+    private static final String[] columns = new String[]{"_id", "title"};
+    private static final int INDEX_ID = 0;
+    private static final int INDEX_TITLE = 1;
 
-    private String[] columns = new String[]{"_id", "title"};
 
     public SuggestionListAdapter(Context context) {
-        super(context, null, false);
-    }
-
-    @Override
-    public View newView(Context context, Cursor cursor, ViewGroup parent) {
-        ViewHolder viewHolder;
-
-        View view = LayoutInflater.from(context).inflate(android.R.layout.simple_list_item_1, parent, false);
-        viewHolder = new ViewHolder();
-        viewHolder.suggestionTitle = (TextView) view.findViewById(android.R.id.text1);
-        view.setTag(viewHolder);
-
-
-        return view;
+        super(context, android.R.layout.simple_list_item_1, null, 0);
     }
 
     @Override
     public void bindView(View view, Context context, Cursor cursor) {
-        ViewHolder viewHolder = (ViewHolder) view.getTag();
-        viewHolder.suggestionTitle.setText(cursor.getString(1));
+        ViewHolder viewHolder = new ViewHolder(view);
+        viewHolder.suggestionTitle.setText(cursor.getString(INDEX_TITLE));
     }
 
-
+    /**
+     * Update the suggestion list
+     * @param suggestions the list of suggestions
+     */
     public void updateAdapter(List<String> suggestions) {
-        MatrixCursor cursor = new MatrixCursor(columns);
+        MatrixCursor cursor = new MatrixCursor(columns, suggestions.size());
         int i = 0;
-        for (String s : suggestions) {
-            String[] temp = new String[2];
-            temp[0] = Integer.toString(i);
-            temp[1] = s;
+        for (String suggestion : suggestions) {
+            String[] columnValues = new String[columns.length];
+            columnValues[INDEX_TITLE] = suggestion;
+            columnValues[INDEX_ID] = Integer.toString(i);
+            cursor.addRow(columnValues);
             i++;
-            cursor.addRow(temp);
         }
         changeCursor(cursor);
     }
 
+    /**
+     * Get the suggestion for a position
+     * @param position the position of the suggestion
+     * @return the suggestion
+     */
     public String getSuggestion(int position) {
-        return ((Cursor) getItem(position)).getString(1);
+        return ((Cursor) getItem(position)).getString(INDEX_TITLE);
     }
 
     private class ViewHolder {
-        public TextView suggestionTitle;
+        private final TextView suggestionTitle;
+        private ViewHolder(View view) {
+            this.suggestionTitle = (TextView) view.findViewById(android.R.id.text1);
+        }
     }
 }

app/src/main/java/org/schabi/newpipe/search_fragment/SuggestionSearchRunnable.java

@@ -8,7 +8,7 @@ import android.widget.Toast;
 
 import org.schabi.newpipe.extractor.NewPipe;
 import org.schabi.newpipe.extractor.exceptions.ExtractionException;
-import org.schabi.newpipe.extractor.search.SuggestionExtractor;
+import org.schabi.newpipe.extractor.SuggestionExtractor;
 import org.schabi.newpipe.report.ErrorActivity;
 import org.schabi.newpipe.R;
 
@@ -37,14 +37,15 @@ import java.util.List;
 
 public class SuggestionSearchRunnable implements Runnable{
 
+    /**
+     * Runnable to update a {@link SuggestionListAdapter}
+     */
     private class SuggestionResultRunnable implements Runnable{
 
-        private List<String> suggestions;
-        private SuggestionListAdapter adapter;
+        private final List<String> suggestions;
 
-        private SuggestionResultRunnable(List<String> suggestions, SuggestionListAdapter adapter) {
+        private SuggestionResultRunnable(List<String> suggestions) {
             this.suggestions = suggestions;
-            this.adapter = adapter;
         }
 
         @Override
@@ -55,9 +56,9 @@ public class SuggestionSearchRunnable implements Runnable{
 
     private final int serviceId;
     private final String query;
-    final Handler h = new Handler();
-    private Activity a = null;
-    private SuggestionListAdapter adapter;
+    private final Handler h = new Handler();
+    private final Activity a;
+    private final SuggestionListAdapter adapter;
     public SuggestionSearchRunnable(int serviceId, String query,
                                      Activity activity, SuggestionListAdapter adapter) {
         this.serviceId = serviceId;
@@ -76,7 +77,7 @@ public class SuggestionSearchRunnable implements Runnable{
             String searchLanguage = sp.getString(searchLanguageKey,
                     a.getString(R.string.default_language_value));
             List<String> suggestions = se.suggestionList(query, searchLanguage);
-            h.post(new SuggestionResultRunnable(suggestions, adapter));
+            h.post(new SuggestionResultRunnable(suggestions));
         } catch (ExtractionException e) {
             ErrorActivity.reportError(h, a, e, null, a.findViewById(android.R.id.content),
                     ErrorActivity.ErrorInfo.make(ErrorActivity.SEARCHED,

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

@@ -5,6 +5,7 @@ import android.content.Intent;
 import android.content.res.Configuration;
 import android.os.Bundle;
 import android.preference.PreferenceActivity;
+import android.preference.PreferenceManager;
 import android.support.annotation.LayoutRes;
 import android.support.annotation.NonNull;
 import android.support.v7.app.ActionBar;
@@ -16,6 +17,8 @@ import android.view.ViewGroup;
 
 import org.schabi.newpipe.R;
 
+import java.util.Objects;
+
 
 /**
  * Created by Christian Schabesberger on 31.08.15.
@@ -43,6 +46,11 @@ public class SettingsActivity extends PreferenceActivity  {
 
     @Override
     protected void onCreate(Bundle savedInstanceBundle) {
+        if (PreferenceManager.getDefaultSharedPreferences(this)
+                .getString("theme", getResources().getString(R.string.light_theme_title)).
+                        equals(getResources().getString(R.string.dark_theme_title)))  {
+            setTheme(R.style.DarkTheme);
+        }
         getDelegate().installViewFactory();
         getDelegate().onCreate(savedInstanceBundle);
         super.onCreate(savedInstanceBundle);

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

@@ -1,6 +1,7 @@
 package org.schabi.newpipe.settings;
 
 import android.app.Activity;
+import android.app.ListActivity;
 import android.content.ClipData;
 import android.content.Intent;
 import android.content.SharedPreferences;
@@ -20,6 +21,7 @@ import org.schabi.newpipe.App;
 import org.schabi.newpipe.R;
 
 import java.util.ArrayList;
+import java.util.Objects;
 
 import info.guardianproject.netcipher.proxy.OrbotHelper;
 
@@ -55,6 +57,7 @@ public class SettingsFragment  extends PreferenceFragment
     String DOWNLOAD_PATH_PREFERENCE;
     String DOWNLOAD_PATH_AUDIO_PREFERENCE;
     String USE_TOR_KEY;
+    String THEME;
 
     public static final int REQUEST_INSTALL_ORBOT = 0x1234;
 
@@ -63,11 +66,11 @@ public class SettingsFragment  extends PreferenceFragment
     private ListPreference searchLanguagePreference;
     private Preference downloadPathPreference;
     private Preference downloadPathAudioPreference;
+    private Preference themePreference;
     private SharedPreferences defaultPreferences;
 
-
     @Override
-    public void onCreate(Bundle savedInstanceState) {
+    public void onCreate(final Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         addPreferencesFromResource(R.xml.settings);
 
@@ -81,6 +84,7 @@ public class SettingsFragment  extends PreferenceFragment
         SEARCH_LANGUAGE_PREFERENCE = getString(R.string.search_language_key);
         DOWNLOAD_PATH_PREFERENCE = getString(R.string.download_path_key);
         DOWNLOAD_PATH_AUDIO_PREFERENCE = getString(R.string.download_path_audio_key);
+        THEME = getString(R.string.theme_key);
         USE_TOR_KEY = getString(R.string.use_tor_key);
 
         // get pref objects
@@ -92,6 +96,7 @@ public class SettingsFragment  extends PreferenceFragment
                 (ListPreference) findPreference(SEARCH_LANGUAGE_PREFERENCE);
         downloadPathPreference = findPreference(DOWNLOAD_PATH_PREFERENCE);
         downloadPathAudioPreference = findPreference(DOWNLOAD_PATH_AUDIO_PREFERENCE);
+        themePreference = findPreference(THEME);
 
         prefListener = new SharedPreferences.OnSharedPreferenceChangeListener() {
             @Override
@@ -132,6 +137,11 @@ public class SettingsFragment  extends PreferenceFragment
                     downloadPathAudioPreference
                             .setSummary(downloadPath);
                 }
+                else if (key == THEME)
+                {
+                    String theme = sharedPreferences.getString(THEME, "Light");
+                    themePreference.setSummary(theme);
+                }
                 updateSummary();
             }
         };
@@ -161,7 +171,6 @@ public class SettingsFragment  extends PreferenceFragment
                 activity.startActivityForResult(i, R.string.download_path_audio_key);
             }
         }
-
         return super.onPreferenceTreeClick(preferenceScreen, preference);
     }
 
@@ -216,8 +225,8 @@ public class SettingsFragment  extends PreferenceFragment
             // installing the app does not necessarily return RESULT_OK
             App.configureTor(requestCode == REQUEST_INSTALL_ORBOT
                     && OrbotHelper.requestStartTor(a));
-
         }
+
         updateSummary();
         super.onActivityResult(requestCode, resultCode, data);
     }
@@ -239,6 +248,9 @@ public class SettingsFragment  extends PreferenceFragment
         downloadPathAudioPreference.setSummary(
                 defaultPreferences.getString(DOWNLOAD_PATH_AUDIO_PREFERENCE,
                         getString(R.string.download_path_audio_summary)));
+        themePreference.setSummary(
+                defaultPreferences.getString(THEME,
+                        getString(R.string.light_theme_title)));
     }
 
     @Override

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

@@ -0,0 +1,151 @@
+package org.schabi.newpipe.util;
+
+import android.app.Activity;
+import android.content.Context;
+import android.content.Intent;
+import android.os.Bundle;
+import android.support.v4.app.NavUtils;
+import android.support.v7.app.AppCompatActivity;
+import android.util.Log;
+
+import org.schabi.newpipe.ChannelActivity;
+import org.schabi.newpipe.MainActivity;
+import org.schabi.newpipe.detail.VideoItemDetailActivity;
+import org.schabi.newpipe.detail.VideoItemDetailFragment;
+import org.schabi.newpipe.extractor.NewPipe;
+import org.schabi.newpipe.extractor.StreamingService;
+
+import java.util.ArrayList;
+import java.util.Stack;
+
+/**
+ * Created by Christian Schabesberger on 16.02.17.
+ *
+ * Copyright (C) Christian Schabesberger 2016 <chris.schabesberger@mailbox.org>
+ * NavStack.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/>.
+ */
+
+/**
+ * class helps to navigate within the app
+ * IMPORTAND: the top of the stack is the current activity !!!
+ */
+public class NavStack {
+    private static final String TAG = NavStack.class.toString();
+    public static final String SERVICE_ID = "service_id";
+    public static final String URL = "url";
+
+    private static final String NAV_STACK="nav_stack";
+
+    private enum ActivityId {
+        CHANNEL,
+        DETAIL
+    }
+
+    private class NavEntry {
+        public NavEntry(String url, int serviceId) {
+            this.url = url;
+            this.serviceId = serviceId;
+        }
+        public String url;
+        public int serviceId;
+    }
+
+    private static NavStack instance = new NavStack();
+    private Stack<NavEntry> stack = new Stack<NavEntry>();
+
+    private NavStack() {
+    }
+
+    public static NavStack getInstance() {
+        return instance;
+    }
+
+    private void addEntry(String url, Class ac, int serviceId) {
+        stack.push(new NavEntry(url, serviceId));
+    }
+
+    public void navBack(Activity activity) throws Exception {
+        if(stack.size() == 0) { // if stack is already empty here, activity was probably called
+            // from another app
+            activity.finish();
+            return;
+        }
+        stack.pop(); // remove curent activty, since we dont want to return to itself
+        if (stack.size() == 0) {
+            openMainActivity(activity); // if no more page is on the stack this means we are home
+            return;
+        }
+        NavEntry entry = stack.pop();  // this element will reapear, since by calling the old page
+        // this element will be pushed on top again
+        try {
+            StreamingService service = NewPipe.getService(entry.serviceId);
+            switch (service.getLinkTypeByUrl(entry.url)) {
+                case STREAM:
+                    openDetailActivity(activity, entry.url, entry.serviceId);
+                    break;
+                case CHANNEL:
+                    openChannelActivity(activity, entry.url, entry.serviceId);
+                    break;
+                case NONE:
+                    throw new Exception("Url not known to service. service="
+                            + Integer.toString(entry.serviceId) + " url=" + entry.url);
+                default:
+                    openMainActivity(activity);
+            }
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+
+
+    public void openChannelActivity(Context context, String url, int serviceId) {
+        openActivity(context, url, serviceId, ChannelActivity.class);
+    }
+
+    public void openDetailActivity(Context context, String url, int serviceId) {
+        openActivity(context, url, serviceId, VideoItemDetailActivity.class);
+    }
+
+    private void openActivity(Context context, String url, int serviceId, Class acitivtyClass) {
+        stack.push(new NavEntry(url, serviceId));
+        Intent i = new Intent(context, acitivtyClass);
+        i.putExtra(SERVICE_ID, serviceId);
+        i.putExtra(URL, url);
+        context.startActivity(i);
+    }
+
+    public void openMainActivity(Activity a) {
+        stack.clear();
+        Intent i = new Intent(a, MainActivity.class);
+        i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
+        NavUtils.navigateUpTo(a, i);
+    }
+
+    public void onSaveInstanceState(Bundle state) {
+        ArrayList<String> sa = new ArrayList<>();
+        for(NavEntry entry : stack) {
+            sa.add(entry.url);
+        }
+        state.putStringArrayList(NAV_STACK, sa);
+    }
+
+    public void restoreSavedInstanceState(Bundle state) {
+        ArrayList<String> sa = state.getStringArrayList(NAV_STACK);
+        for(String url : sa) {
+            stack.push(new NavEntry(url, NewPipe.getServiceByUrl(url).getServiceId()));
+        }
+    }
+}

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

@@ -0,0 +1,68 @@
+package org.schabi.newpipe.util;
+
+import android.Manifest;
+import android.app.Activity;
+import android.content.pm.PackageManager;
+import android.os.Build;
+import android.support.annotation.RequiresApi;
+import android.support.v4.app.ActivityCompat;
+import android.support.v4.content.ContextCompat;
+
+public class PermissionHelper {
+    public static final int PERMISSION_WRITE_STORAGE = 778;
+    public static final int PERMISSION_READ_STORAGE = 777;
+
+
+
+    public static boolean checkStoragePermissions(Activity activity) {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
+            if(!checkReadStoragePermissions(activity)) return false;
+        }
+        return checkWriteStoragePermissions(activity);
+    }
+
+    @RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN)
+    public static boolean checkReadStoragePermissions(Activity activity) {
+        if (ContextCompat.checkSelfPermission(activity, Manifest.permission.READ_EXTERNAL_STORAGE)
+                != PackageManager.PERMISSION_GRANTED) {
+            ActivityCompat.requestPermissions(activity,
+                    new String[]{
+                            Manifest.permission.READ_EXTERNAL_STORAGE,
+                            Manifest.permission.WRITE_EXTERNAL_STORAGE},
+                    PERMISSION_READ_STORAGE);
+
+            return false;
+        }
+        return true;
+    }
+
+
+    public static boolean checkWriteStoragePermissions(Activity activity) {
+        // Here, thisActivity is the current activity
+        if (ContextCompat.checkSelfPermission(activity,
+                Manifest.permission.WRITE_EXTERNAL_STORAGE)
+                != PackageManager.PERMISSION_GRANTED) {
+
+            // Should we show an explanation?
+            /*if (ActivityCompat.shouldShowRequestPermissionRationale(activity,
+                    Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
+
+                // Show an explanation to the user *asynchronously* -- don't block
+                // this thread waiting for the user's response! After the user
+                // sees the explanation, try again to request the permission.
+            } else {*/
+
+            // No explanation needed, we can request the permission.
+            ActivityCompat.requestPermissions(activity,
+                    new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE},
+                    PERMISSION_WRITE_STORAGE);
+
+            // PERMISSION_WRITE_STORAGE is an
+            // app-defined int constant. The callback method gets the
+            // result of the request.
+            /*}*/
+            return false;
+        }
+        return true;
+    }
+}

app/src/main/java/us/shandian/giga/get/DownloadDataSource.java

@@ -0,0 +1,36 @@
+package us.shandian.giga.get;
+
+import java.util.List;
+
+/**
+ * Provides access to the storage of {@link DownloadMission}s
+ */
+public interface DownloadDataSource {
+
+    /**
+     * Load all missions
+     * @return a list of download missions
+     */
+    List<DownloadMission> loadMissions();
+
+    /**
+     * Add a downlaod mission to the storage
+     * @param downloadMission the download mission to add
+     * @return the identifier of the mission
+     */
+    void addMission(DownloadMission downloadMission);
+
+    /**
+     * Update a download mission which exists in the storage
+     * @param downloadMission the download mission to update
+     * @throws IllegalArgumentException if the mission was not added to storage
+     */
+    void updateMission(DownloadMission downloadMission);
+
+
+    /**
+     * Delete a download mission
+     * @param downloadMission the mission to delete
+     */
+    void deleteMission(DownloadMission downloadMission);
+}

app/src/main/java/us/shandian/giga/get/DownloadManager.java

@@ -3,12 +3,46 @@ package us.shandian.giga.get;
 public interface DownloadManager
 {
 	int BLOCK_SIZE = 512 * 1024;
-	
-	int startMission(String url, String name, boolean isAudio, int threads);
+
+	/**
+	 * Start a new download mission
+	 * @param url the url to download
+	 * @param location the location
+	 * @param name the name of the file to create
+	 * @param isAudio true if the download is an audio file
+	 * @param threads the number of threads maximal used to download chunks of the file.    @return the identifier of the mission.
+     */
+	int startMission(String url, String location, String name, boolean isAudio, int threads);
+
+	/**
+	 * Resume the execution of a download mission.
+	 * @param id the identifier of the mission to resume.
+	 */
 	void resumeMission(int id);
+
+	/**
+	 * Pause the execution of a download mission.
+	 * @param id the identifier of the mission to pause.
+     */
 	void pauseMission(int id);
+
+	/**
+	 * Deletes the mission from the downloaded list but keeps the downloaded file.
+	 * @param id The mission identifier
+     */
 	void deleteMission(int id);
+
+	/**
+	 * Get the download mission by its identifier
+	 * @param id the identifier of the download mission
+	 * @return the download mission or null if the mission doesn't exist
+     */
 	DownloadMission getMission(int id);
+
+	/**
+	 * Get the number of download missions.
+	 * @return the number of download missions.
+     */
 	int getCount();
-	String getLocation();
+
 }

app/src/main/java/us/shandian/giga/get/DownloadManagerImpl.java

@@ -1,17 +1,21 @@
 package us.shandian.giga.get;
 
-import android.content.Context;
+import android.support.annotation.Nullable;
 import android.util.Log;
 
 import com.google.gson.Gson;
 
-import org.schabi.newpipe.settings.NewPipeSettings;
-
 import java.io.File;
+import java.io.FilenameFilter;
 import java.io.RandomAccessFile;
 import java.net.HttpURLConnection;
 import java.net.URL;
 import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.Comparator;
+import java.util.List;
 
 import us.shandian.giga.util.Utility;
 import static org.schabi.newpipe.BuildConfig.DEBUG;
@@ -19,33 +23,48 @@ import static org.schabi.newpipe.BuildConfig.DEBUG;
 public class DownloadManagerImpl implements DownloadManager
 {
 	private static final String TAG = DownloadManagerImpl.class.getSimpleName();
-	
-	private Context mContext;
-	private String mLocation;
-	protected ArrayList<DownloadMission> mMissions = new ArrayList<DownloadMission>();
-	
-	public DownloadManagerImpl(Context context, String location) {
-		mContext = context;
-		mLocation = location;
-		loadMissions();
+	private final DownloadDataSource mDownloadDataSource;
+
+	private final ArrayList<DownloadMission> mMissions = new ArrayList<DownloadMission>();
+
+    /**
+     * Create a new instance
+     * @param searchLocations the directories to search for unfinished downloads
+     * @param downloadDataSource the data source for finished downloads
+     */
+	public DownloadManagerImpl(Collection<String> searchLocations, DownloadDataSource downloadDataSource) {
+		mDownloadDataSource = downloadDataSource;
+		loadMissions(searchLocations);
 	}
-	
+
 	@Override
-	public int startMission(String url, String name, boolean isAudio, int threads) {
-		DownloadMission mission = new DownloadMission();
-		mission.url = url;
-		mission.name = name;
-		if(isAudio) {
-			mission.location = NewPipeSettings.getAudioDownloadPath(mContext);
-		} else {
-			mission.location = NewPipeSettings.getVideoDownloadPath(mContext);
+	public int startMission(String url, String location, String name, boolean isAudio, int threads) {
+		DownloadMission existingMission = getMissionByLocation(location, name);
+		if(existingMission != null) {
+			// Already downloaded or downloading
+			if(existingMission.finished) {
+				// Overwrite mission
+                deleteMission(mMissions.indexOf(existingMission));
+			} else {
+				// Rename file (?)
+                try {
+                    name = generateUniqueName(location, name);
+                }catch (Exception e) {
+                    Log.e(TAG, "Unable to generate unique name", e);
+                    name = System.currentTimeMillis() + name ;
+                    Log.i(TAG, "Using " + name);
+                }
+			}
 		}
+
+		DownloadMission mission = new DownloadMission(name, url, location);
 		mission.timestamp = System.currentTimeMillis();
 		mission.threadCount = threads;
-		new Initializer(mContext, mission).start();
+		mission.addListener(new MissionListener(mission));
+		new Initializer(mission).start();
 		return insertMission(mission);
 	}
-	
+
 	@Override
 	public void resumeMission(int i) {
 		DownloadMission d = getMission(i);
@@ -53,7 +72,7 @@ public class DownloadManagerImpl implements DownloadManager
 			d.start();
 		}
 	}
-	
+
 	@Override
 	public void pauseMission(int i) {
 		DownloadMission d = getMission(i);
@@ -61,55 +80,94 @@ public class DownloadManagerImpl implements DownloadManager
 			d.pause();
 		}
 	}
-	
+
 	@Override
 	public void deleteMission(int i) {
-		getMission(i).delete();
+		DownloadMission mission = getMission(i);
+		if(mission.finished) {
+			mDownloadDataSource.deleteMission(mission);
+		}
+		mission.delete();
 		mMissions.remove(i);
 	}
-	
-	private void loadMissions() {
-		File f = new File(mLocation);
+
+	private void loadMissions(Iterable<String> searchLocations) {
+		mMissions.clear();
+		loadFinishedMissions();
+		for(String location: searchLocations) {
+			loadMissions(location);
+		}
+
+	}
+
+
+	/**
+	 * Loads finished missions from the data source
+	 */
+	private void loadFinishedMissions() {
+		List<DownloadMission> finishedMissions = mDownloadDataSource.loadMissions();
+        if(finishedMissions == null) {
+            finishedMissions = new ArrayList<>();
+        }
+        // Ensure its sorted
+        Collections.sort(finishedMissions, new Comparator<DownloadMission>() {
+            @Override
+            public int compare(DownloadMission o1, DownloadMission o2) {
+                return (int) (o1.timestamp - o2.timestamp);
+            }
+        });
+        mMissions.ensureCapacity(mMissions.size() + finishedMissions.size());
+		for(DownloadMission mission: finishedMissions) {
+			File downloadedFile = mission.getDownloadedFile();
+			if(!downloadedFile.isFile()) {
+				if(DEBUG) {
+					Log.d(TAG, "downloaded file removed: " + downloadedFile.getAbsolutePath());
+				}
+				mDownloadDataSource.deleteMission(mission);
+			} else {
+				mission.length = downloadedFile.length();
+				mission.finished = true;
+				mission.running = false;
+				mMissions.add(mission);
+			}
+		}
+	}
+
+	private void loadMissions(String location) {
+
+		File f = new File(location);
 
 		if (f.exists() && f.isDirectory()) {
 			File[] subs = f.listFiles();
-			
+
+            if(subs == null) {
+                Log.e(TAG, "listFiles() returned null");
+                return;
+            }
+
 			for (File sub : subs) {
-				if (sub.isDirectory()) {
-					continue;
-				}
-				
-				if (sub.getName().endsWith(".giga")) {
+				if (sub.isFile() && sub.getName().endsWith(".giga")) {
 					String str = Utility.readFromFile(sub.getAbsolutePath());
 					if (str != null && !str.trim().equals("")) {
-						
+
 						if (DEBUG) {
 							Log.d(TAG, "loading mission " + sub.getName());
 							Log.d(TAG, str);
 						}
-						
+
 						DownloadMission mis = new Gson().fromJson(str, DownloadMission.class);
-						
+
 						if (mis.finished) {
-							sub.delete();
+							if(!sub.delete()) {
+                                Log.w(TAG, "Unable to delete .giga file: " + sub.getPath());
+                            }
 							continue;
 						}
-						
+
 						mis.running = false;
 						mis.recovered = true;
 						insertMission(mis);
 					}
-				} else if (!sub.getName().startsWith(".") && !new File(sub.getPath() + ".giga").exists()) {
-					// Add a dummy mission for downloaded files
-					DownloadMission mis = new DownloadMission();
-					mis.length = sub.length();
-					mis.done = mis.length;
-					mis.finished = true;
-					mis.running = false;
-					mis.name = sub.getName();
-					mis.location = mLocation;
-					mis.timestamp = sub.lastModified();
-					insertMission(mis);
 				}
 			}
 		}
@@ -144,18 +202,81 @@ public class DownloadManagerImpl implements DownloadManager
 		
 		return i;
 	}
-	
-	@Override
-	public String getLocation() {
-		return mLocation;
+
+    /**
+	 * Get a mission by its location and name
+	 * @param location the location
+	 * @param name the name
+	 * @return the mission or null if no such mission exists
+	 */
+	private @Nullable DownloadMission getMissionByLocation(String location, String name) {
+		for(DownloadMission mission: mMissions) {
+			if(location.equals(mission.location) && name.equals(mission.name)) {
+				return mission;
+			}
+		}
+		return null;
 	}
-	
+
+	/**
+	 * Splits the filename into name and extension
+	 *
+	 * Dots are ignored if they appear: not at all, at the beginning of the file,
+	 * at the end of the file
+	 *
+	 * @param name the name to split
+	 * @return a string array with a length of 2 containing the name and the extension
+     */
+	private static String[] splitName(String name) {
+		int dotIndex = name.lastIndexOf('.');
+		if(dotIndex <= 0 || (dotIndex  == name.length() - 1)) {
+			return new String[]{name, ""};
+		} else {
+			return new String[]{name.substring(0, dotIndex), name.substring(dotIndex + 1)};
+		}
+	}
+
+	/**
+	 * Generates a unique file name.
+	 *
+	 * e.g. "myname (1).txt" if the name "myname.txt" exists.
+	 * @param location the location (to check for existing files)
+	 * @param name the name of the file
+     * @return the unique file name
+	 * @throws IllegalArgumentException if the location is not a directory
+	 * @throws SecurityException if the location is not readable
+     */
+	private static String generateUniqueName(String location, String name) {
+		if(location == null) throw new NullPointerException("location is null");
+		if(name == null) throw new NullPointerException("name is null");
+		File destination = new File(location);
+		if(!destination.isDirectory()) {
+			throw new IllegalArgumentException("location is not a directory: " + location);
+		}
+		final String[] nameParts = splitName(name);
+		String[] existingName = destination.list(new FilenameFilter() {
+			@Override
+			public boolean accept(File dir, String name) {
+				return name.startsWith(nameParts[0]);
+			}
+		});
+		Arrays.sort(existingName);
+		String newName;
+		int downloadIndex = 0;
+		do {
+			newName = nameParts[0] + " (" + downloadIndex + ")." + nameParts[1];
+			++downloadIndex;
+			if(downloadIndex == 1000) {  // Probably an error on our side
+				throw new RuntimeException("Too many existing files");
+			}
+		} while (Arrays.binarySearch(existingName, newName) >= 0);
+		return newName;
+	}
+
 	private class Initializer extends Thread {
-		private Context context;
 		private DownloadMission mission;
 		
-		public Initializer(Context context, DownloadMission mission) {
-			this.context = context;
+		public Initializer(DownloadMission mission) {
 			this.mission = mission;
 		}
 		
@@ -217,4 +338,30 @@ public class DownloadManagerImpl implements DownloadManager
 			}
 		}
 	}
+
+	/**
+	 * Waits for mission to finish to add it to the {@link #mDownloadDataSource}
+	 */
+	private class MissionListener implements DownloadMission.MissionListener {
+		private final DownloadMission mMission;
+
+		private MissionListener(DownloadMission mission) {
+			if(mission == null) throw new NullPointerException("mission is null");
+			// Could the mission be passed in onFinish()?
+			mMission = mission;
+		}
+
+		@Override
+		public void onProgressUpdate(DownloadMission downloadMission, long done, long total) {
+		}
+
+		@Override
+		public void onFinish(DownloadMission downloadMission) {
+			mDownloadDataSource.addMission(mMission);
+		}
+
+		@Override
+		public void onError(DownloadMission downloadMission, int errCode) {
+		}
+	}
 }

app/src/main/java/us/shandian/giga/get/DownloadMission.java

@@ -1,6 +1,5 @@
 package us.shandian.giga.get;
 
-import android.content.Context;
 import android.os.Handler;
 import android.os.Looper;
 import android.util.Log;
@@ -10,39 +9,63 @@ import com.google.gson.Gson;
 import java.io.File;
 import java.lang.ref.WeakReference;
 import java.util.ArrayList;
-import java.util.Iterator;
 import java.util.HashMap;
+import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
 
 import us.shandian.giga.util.Utility;
+
 import static org.schabi.newpipe.BuildConfig.DEBUG;
 
 public class DownloadMission
 {
 	private static final String TAG = DownloadMission.class.getSimpleName();
-	
+
 	public interface MissionListener {
 		HashMap<MissionListener, Handler> handlerStore = new HashMap<>();
 		
-		void onProgressUpdate(long done, long total);
-		void onFinish();
-		void onError(int errCode);
+		void onProgressUpdate(DownloadMission downloadMission, long done, long total);
+		void onFinish(DownloadMission downloadMission);
+		void onError(DownloadMission downloadMission, int errCode);
 	}
 	
 	public static final int ERROR_SERVER_UNSUPPORTED = 206;
 	public static final int ERROR_UNKNOWN = 233;
-	
-	public String name = "";
-	public String url = "";
-	public String location = "";
+
+	/**
+	 * The filename
+	 */
+	public String name;
+
+	/**
+	 * The url of the file to download
+	 */
+	public String url;
+
+	/**
+	 * The directory to store the download
+	 */
+	public String location;
+
+	/**
+	 * Number of blocks the size of {@link DownloadManager#BLOCK_SIZE}
+	 */
 	public long blocks;
+
+	/**
+	 * Number of bytes
+	 */
 	public long length;
+
+	/**
+	 * Number of bytes downloaded
+	 */
 	public long done;
 	public int threadCount = 3;
 	public int finishCount;
-	public List<Long> threadPositions = new ArrayList<Long>();
-	public Map<Long, Boolean> blockState = new HashMap<Long, Boolean>();
+	private List<Long> threadPositions = new ArrayList<Long>();
+	public final Map<Long, Boolean> blockState = new HashMap<Long, Boolean>();
 	public boolean running;
 	public boolean finished;
 	public boolean fallback;
@@ -53,23 +76,65 @@ public class DownloadMission
 	
 	private transient ArrayList<WeakReference<MissionListener>> mListeners = new ArrayList<WeakReference<MissionListener>>();
 	private transient boolean mWritingToFile;
-	
+
+	private static final int NO_IDENTIFIER = -1;
+	private long db_identifier = NO_IDENTIFIER;
+
+	public DownloadMission() {
+	}
+
+	public DownloadMission(String name, String url, String location) {
+		if(name == null) throw new NullPointerException("name is null");
+		if(name.isEmpty()) throw new IllegalArgumentException("name is empty");
+		if(url == null) throw new NullPointerException("url is null");
+		if(url.isEmpty()) throw new IllegalArgumentException("url is empty");
+		if(location == null) throw new NullPointerException("location is null");
+		if(location.isEmpty()) throw new IllegalArgumentException("location is empty");
+		this.url = url;
+		this.name = name;
+		this.location = location;
+	}
+
+
+	private void checkBlock(long block) {
+		if(block < 0 || block >= blocks) {
+			throw new IllegalArgumentException("illegal block identifier");
+		}
+	}
+
+	/**
+	 * Check if a block is reserved
+	 * @param block the block identifier
+	 * @return true if the block is reserved and false if otherwise
+     */
 	public boolean isBlockPreserved(long block) {
+		checkBlock(block);
 		return blockState.containsKey(block) ? blockState.get(block) : false;
 	}
 	
 	public void preserveBlock(long block) {
+		checkBlock(block);
 		synchronized (blockState) {
 			blockState.put(block, true);
 		}
 	}
-	
-	public void setPosition(int id, long position) {
-		threadPositions.set(id, position);
+
+	/**
+	 * Set the download position of the file
+	 * @param threadId the identifier of the thread
+	 * @param position the download position of the thread
+     */
+	public void setPosition(int threadId, long position) {
+		threadPositions.set(threadId, position);
 	}
-	
-	public long getPosition(int id) {
-		return threadPositions.get(id);
+
+	/**
+	 * Get the position of a thread
+	 * @param threadId the identifier of the thread
+	 * @return the position for the thread
+     */
+	public long getPosition(int threadId) {
+		return threadPositions.get(threadId);
 	}
 	
 	public synchronized void notifyProgress(long deltaLen) {
@@ -95,13 +160,16 @@ public class DownloadMission
 				MissionListener.handlerStore.get(listener).post(new Runnable() {
 					@Override
 					public void run() {
-						listener.onProgressUpdate(done, length);
+						listener.onProgressUpdate(DownloadMission.this, done, length);
 					}
 				});
 			}
 		}
 	}
-	
+
+	/**
+	 * Called by a download thread when it finished.
+	 */
 	public synchronized void notifyFinished() {
 		if (errCode > 0) return;
 		
@@ -111,7 +179,10 @@ public class DownloadMission
 			onFinish();
 		}
 	}
-	
+
+	/**
+	 * Called when all parts are downloaded
+	 */
 	private void onFinish() {
 		if (errCode > 0) return;
 		
@@ -130,7 +201,7 @@ public class DownloadMission
 				MissionListener.handlerStore.get(listener).post(new Runnable() {
 					@Override
 					public void run() {
-						listener.onFinish();
+						listener.onFinish(DownloadMission.this);
 					}
 				});
 			}
@@ -147,7 +218,7 @@ public class DownloadMission
 			MissionListener.handlerStore.get(listener).post(new Runnable() {
 				@Override
 				public void run() {
-					listener.onError(errCode);
+					listener.onError(DownloadMission.this, errCode);
 				}
 			});
 		}
@@ -169,7 +240,10 @@ public class DownloadMission
 			}
 		}
 	}
-	
+
+	/**
+	 * Start downloading with multiple threads.
+	 */
 	public void start() {
 		if (!running && !finished) {
 			running = true;
@@ -200,12 +274,19 @@ public class DownloadMission
 			// if (err)
 		}
 	}
-	
+
+	/**
+	 * Removes the file and the meta file
+	 */
 	public void delete() {
 		deleteThisFromFile();
-		new File(location + "/" + name).delete();
+		new File(location, name).delete();
 	}
-	
+
+	/**
+	 * Write this {@link DownloadMission} to the meta file asynchronously
+	 * if no thread is already running.
+	 */
 	public void writeThisToFile() {
 		if (!mWritingToFile) {
 			mWritingToFile = true;
@@ -218,14 +299,30 @@ public class DownloadMission
 			}.start();
 		}
 	}
-	
+
+	/**
+	 * Write this {@link DownloadMission} to the meta file.
+	 */
 	private void doWriteThisToFile() {
 		synchronized (blockState) {
-			Utility.writeToFile(location + "/" + name + ".giga", new Gson().toJson(this));
+			Utility.writeToFile(getMetaFilename(), new Gson().toJson(this));
 		}
 	}
 	
 	private void deleteThisFromFile() {
-		new File(location + "/" + name + ".giga").delete();
+		new File(getMetaFilename()).delete();
 	}
+
+	/**
+	 * Get the path of the meta file
+	 * @return the path to the meta file
+     */
+	private String getMetaFilename() {
+		return location + "/" + name + ".giga";
+	}
+
+	public File getDownloadedFile() {
+		return new File(location, name);
+	}
+
 }

app/src/main/java/us/shandian/giga/get/DownloadRunnable.java

@@ -9,14 +9,19 @@ import java.net.URL;
 
 import static org.schabi.newpipe.BuildConfig.DEBUG;
 
+/**
+ * Runnable to download blocks of a file until the file is completely downloaded,
+ * an error occurs or the process is stopped.
+ */
 public class DownloadRunnable implements Runnable
 {
 	private static final String TAG = DownloadRunnable.class.getSimpleName();
 	
-	private DownloadMission mMission;
-	private int mId;
+	private final DownloadMission mMission;
+	private final int mId;
 	
 	public DownloadRunnable(DownloadMission mission, int id) {
+		if(mission == null) throw new NullPointerException("mission is null");
 		mMission = mission;
 		mId = id;
 	}
@@ -86,7 +91,7 @@ public class DownloadRunnable implements Runnable
 					Log.d(TAG, mId + ":Content-Length=" + conn.getContentLength() + " Code:" + conn.getResponseCode());
 				}
 				
-				// A server may be ignoring the range requet
+				// A server may be ignoring the range request
 				if (conn.getResponseCode() != 206) {
 					mMission.errCode = DownloadMission.ERROR_SERVER_UNSUPPORTED;
 					notifyError(DownloadMission.ERROR_SERVER_UNSUPPORTED);
@@ -131,7 +136,7 @@ public class DownloadRunnable implements Runnable
 				notifyProgress(-total);
 				
 				if (DEBUG) {
-					Log.d(TAG, mId + ":position " + position + " retrying");
+					Log.d(TAG, mId + ":position " + position + " retrying", e);
 				}
 			}
 		}

app/src/main/java/us/shandian/giga/get/DownloadRunnableFallback.java

@@ -8,10 +8,11 @@ import java.net.URL;
 // Single-threaded fallback mode
 public class DownloadRunnableFallback implements Runnable
 {
-	private DownloadMission mMission;
+	private final DownloadMission mMission;
 	//private int mId;
 	
 	public DownloadRunnableFallback(DownloadMission mission) {
+		if(mission == null) throw new NullPointerException("mission is null");
 		//mId = id;
 		mMission = mission;
 	}
@@ -35,7 +36,7 @@ public class DownloadRunnableFallback implements Runnable
 					f.write(buf, 0, len);
 					notifyProgress(len);
 					
-					if (Thread.currentThread().interrupted()) {
+					if (Thread.interrupted()) {
 						break;
 					}
 					

app/src/main/java/us/shandian/giga/get/sqlite/DownloadMissionSQLiteHelper.java

@@ -0,0 +1,102 @@
+package us.shandian.giga.get.sqlite;
+
+import android.content.ContentValues;
+import android.content.Context;
+import android.database.Cursor;
+import android.database.sqlite.SQLiteDatabase;
+import android.database.sqlite.SQLiteOpenHelper;
+
+import us.shandian.giga.get.DownloadMission;
+
+/**
+ * SqliteHelper to store {@link us.shandian.giga.get.DownloadMission}
+ */
+public class DownloadMissionSQLiteHelper extends SQLiteOpenHelper {
+
+
+    private final String TAG = "DownloadMissionHelper";
+
+    // TODO: use NewPipeSQLiteHelper ('s constants) when playlist branch is merged (?)
+    private static final String DATABASE_NAME = "downloads.db";
+
+    private static final int DATABASE_VERSION = 2;
+    /**
+     * The table name of download missions
+     */
+    static final String MISSIONS_TABLE_NAME = "download_missions";
+
+    /**
+     * The key to the directory location of the mission
+     */
+    static final String KEY_LOCATION = "location";
+    /**
+     * The key to the url of a mission
+     */
+    static final String KEY_URL = "url";
+    /**
+     * The key to the name of a mission
+     */
+    static final String KEY_NAME = "name";
+
+    /**
+     * The key to the done.
+     */
+    static final String KEY_DONE = "bytes_downloaded";
+
+    static final String KEY_TIMESTAMP = "timestamp";
+
+    /**
+     * The statement to create the table
+     */
+    private static final String MISSIONS_CREATE_TABLE =
+            "CREATE TABLE " + MISSIONS_TABLE_NAME + " (" +
+                    KEY_LOCATION + " TEXT NOT NULL, " +
+                    KEY_NAME + " TEXT NOT NULL, " +
+                    KEY_URL + " TEXT NOT NULL, " +
+                    KEY_DONE + " INTEGER NOT NULL, " +
+                    KEY_TIMESTAMP + " INTEGER NOT NULL, " +
+                    " UNIQUE(" + KEY_LOCATION + ", " + KEY_NAME + "));";
+
+
+    DownloadMissionSQLiteHelper(Context context) {
+        super(context, DATABASE_NAME, null, DATABASE_VERSION);
+    }
+
+    /**
+     * Returns all values of the download mission as ContentValues.
+     * @param downloadMission the download mission
+     * @return the content values
+     */
+    public static ContentValues getValuesOfMission(DownloadMission downloadMission) {
+        ContentValues values = new ContentValues();
+        values.put(KEY_URL, downloadMission.url);
+        values.put(KEY_LOCATION, downloadMission.location);
+        values.put(KEY_NAME, downloadMission.name);
+        values.put(KEY_DONE, downloadMission.done);
+        values.put(KEY_TIMESTAMP, downloadMission.timestamp);
+        return values;
+    }
+
+    @Override
+    public void onCreate(SQLiteDatabase db) {
+        db.execSQL(MISSIONS_CREATE_TABLE);
+    }
+
+    @Override
+    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
+        // Currently nothing to do
+    }
+
+    public static DownloadMission getMissionFromCursor(Cursor cursor) {
+        if(cursor == null) throw new NullPointerException("cursor is null");
+        int pos;
+        String name = cursor.getString(cursor.getColumnIndexOrThrow(KEY_NAME));
+        String location = cursor.getString(cursor.getColumnIndexOrThrow(KEY_LOCATION));
+        String url = cursor.getString(cursor.getColumnIndexOrThrow(KEY_URL));
+        DownloadMission mission = new DownloadMission(name, url, location);
+        mission.done = cursor.getLong(cursor.getColumnIndexOrThrow(KEY_DONE));
+        mission.timestamp = cursor.getLong(cursor.getColumnIndexOrThrow(KEY_TIMESTAMP));
+        mission.finished = true;
+        return mission;
+    }
+}

app/src/main/java/us/shandian/giga/get/sqlite/SQLiteDownloadDataSource.java

@@ -0,0 +1,79 @@
+package us.shandian.giga.get.sqlite;
+
+import android.content.ContentValues;
+import android.content.Context;
+import android.database.Cursor;
+import android.database.sqlite.SQLiteDatabase;
+import android.util.Log;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import us.shandian.giga.get.DownloadDataSource;
+import us.shandian.giga.get.DownloadMission;
+
+import static us.shandian.giga.get.sqlite.DownloadMissionSQLiteHelper.KEY_LOCATION;
+import static us.shandian.giga.get.sqlite.DownloadMissionSQLiteHelper.KEY_NAME;
+import static us.shandian.giga.get.sqlite.DownloadMissionSQLiteHelper.MISSIONS_TABLE_NAME;
+
+
+/**
+ * Non-thread-safe implementation of {@link DownloadDataSource}
+ */
+public class SQLiteDownloadDataSource implements DownloadDataSource {
+
+    private static final String TAG = "DownloadDataSourceImpl";
+    private final DownloadMissionSQLiteHelper downloadMissionSQLiteHelper;
+
+    public SQLiteDownloadDataSource(Context context) {
+        downloadMissionSQLiteHelper = new DownloadMissionSQLiteHelper(context);
+    }
+
+    @Override
+    public List<DownloadMission> loadMissions() {
+        ArrayList<DownloadMission> result;
+        SQLiteDatabase database = downloadMissionSQLiteHelper.getReadableDatabase();
+        Cursor cursor = database.query(MISSIONS_TABLE_NAME, null, null,
+                null, null, null, DownloadMissionSQLiteHelper.KEY_TIMESTAMP);
+
+        int count = cursor.getCount();
+        if(count == 0) return new ArrayList<>();
+        result = new ArrayList<>(count);
+        while (cursor.moveToNext()) {
+            result.add(DownloadMissionSQLiteHelper.getMissionFromCursor(cursor));
+        }
+        return result;
+    }
+
+    @Override
+    public void addMission(DownloadMission downloadMission) {
+        if(downloadMission == null) throw new NullPointerException("downloadMission is null");
+        SQLiteDatabase database = downloadMissionSQLiteHelper.getWritableDatabase();
+        ContentValues values = DownloadMissionSQLiteHelper.getValuesOfMission(downloadMission);
+        database.insert(MISSIONS_TABLE_NAME, null, values);
+    }
+
+    @Override
+    public void updateMission(DownloadMission downloadMission) {
+        if(downloadMission == null) throw new NullPointerException("downloadMission is null");
+        SQLiteDatabase database = downloadMissionSQLiteHelper.getWritableDatabase();
+        ContentValues values = DownloadMissionSQLiteHelper.getValuesOfMission(downloadMission);
+        String whereClause = KEY_LOCATION+ " = ? AND " +
+                KEY_NAME + " = ?";
+        int rowsAffected = database.update(MISSIONS_TABLE_NAME, values,
+                whereClause, new String[]{downloadMission.location, downloadMission.name});
+        if(rowsAffected != 1) {
+            Log.e(TAG, "Expected 1 row to be affected by update but got " + rowsAffected);
+        }
+    }
+
+    @Override
+    public void deleteMission(DownloadMission downloadMission) {
+        if(downloadMission == null) throw new NullPointerException("downloadMission is null");
+        SQLiteDatabase database = downloadMissionSQLiteHelper.getWritableDatabase();
+        database.delete(MISSIONS_TABLE_NAME,
+                KEY_LOCATION + " = ? AND " +
+                KEY_NAME + " = ?",
+                new String[]{downloadMission.location, downloadMission.name});
+    }
+}

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

@@ -1,56 +1,96 @@
 package us.shandian.giga.service;
 
+import android.Manifest;
 import android.app.Notification;
 import android.app.PendingIntent;
 import android.app.Service;
+import android.content.Context;
 import android.content.Intent;
+import android.content.ServiceConnection;
 import android.graphics.drawable.BitmapDrawable;
 import android.graphics.drawable.Drawable;
+import android.net.Uri;
 import android.os.Binder;
 import android.os.Handler;
 import android.os.HandlerThread;
 import android.os.IBinder;
 import android.os.Message;
 import android.support.v4.app.NotificationCompat.Builder;
+import android.support.v4.content.PermissionChecker;
 import android.util.Log;
+import android.widget.Toast;
 
+import org.schabi.newpipe.R;
 import org.schabi.newpipe.download.DownloadActivity;
 import org.schabi.newpipe.settings.NewPipeSettings;
-import org.schabi.newpipe.R;
+
+import java.util.ArrayList;
+
+import us.shandian.giga.get.DownloadDataSource;
 import us.shandian.giga.get.DownloadManager;
 import us.shandian.giga.get.DownloadManagerImpl;
 import us.shandian.giga.get.DownloadMission;
+import us.shandian.giga.get.sqlite.SQLiteDownloadDataSource;
+
 import static org.schabi.newpipe.BuildConfig.DEBUG;
 
-public class DownloadManagerService extends Service implements DownloadMission.MissionListener
+public class DownloadManagerService extends Service
 {
-	
+
 	private static final String TAG = DownloadManagerService.class.getSimpleName();
-	
+
+	/**
+	 * Message code of update messages stored as {@link Message#what}.
+	 */
+	private static final int UPDATE_MESSAGE = 0;
+	private static final int NOTIFICATION_ID = 1000;
+	private static final String EXTRA_NAME = "DownloadManagerService.extra.name";
+	private static final String EXTRA_LOCATION = "DownloadManagerService.extra.location";
+	private static final String EXTRA_IS_AUDIO = "DownloadManagerService.extra.is_audio";
+	private static final String EXTRA_THREADS = "DownloadManagerService.extra.threads";
+
+
 	private DMBinder mBinder;
 	private DownloadManager mManager;
 	private Notification mNotification;
 	private Handler mHandler;
 	private long mLastTimeStamp = System.currentTimeMillis();
+	private DownloadDataSource mDataSource;
+
+
+
+	private MissionListener missionListener = new MissionListener();
+
+
+	private void notifyMediaScanner(DownloadMission mission) {
+		Uri uri = Uri.parse("file://" + mission.location + "/" + mission.name);
+		// notify media scanner on downloaded media file ...
+		sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, uri));
+	}
 
 	@Override
 	public void onCreate() {
 		super.onCreate();
-		
+
 		if (DEBUG) {
 			Log.d(TAG, "onCreate");
 		}
-		
+
 		mBinder = new DMBinder();
+		if(mDataSource == null) {
+			mDataSource = new SQLiteDownloadDataSource(this);
+		}
 		if (mManager == null) {
-			String path = NewPipeSettings.getVideoDownloadPath(this);
-			mManager = new DownloadManagerImpl(this, path);
+			ArrayList<String> paths = new ArrayList<>(2);
+			paths.add(NewPipeSettings.getVideoDownloadPath(this));
+			paths.add(NewPipeSettings.getAudioDownloadPath(this));
+			mManager = new DownloadManagerImpl(paths, mDataSource);
 			if (DEBUG) {
 				Log.d(TAG, "mManager == null");
-				Log.d(TAG, "Download directory: " + path);
+				Log.d(TAG, "Download directory: " + paths);
 			}
 		}
-		
+
 		Intent i = new Intent();
 		i.setAction(Intent.ACTION_MAIN);
 		i.setClass(this, DownloadActivity.class);
@@ -83,28 +123,50 @@ public class DownloadManagerService extends Service implements DownloadMission.M
 		mHandler = new Handler(thread.getLooper()) {
 			@Override
 			public void handleMessage(Message msg) {
-				if (msg.what == 0) {
-					int runningCount = 0;
-					
-					for (int i = 0; i < mManager.getCount(); i++) {
-						if (mManager.getMission(i).running) {
-							runningCount++;
+				switch (msg.what) {
+					case UPDATE_MESSAGE: {
+						int runningCount = 0;
+
+						for (int i = 0; i < mManager.getCount(); i++) {
+							if (mManager.getMission(i).running) {
+								runningCount++;
+							}
 						}
+						updateState(runningCount);
+						break;
 					}
-					
-					updateState(runningCount);
 				}
 			}
 		};
 		
 	}
 
+	private void startMissionAsync(final String url, final String location, final String name,
+								   final boolean isAudio, final int threads) {
+		mHandler.post(new Runnable() {
+			@Override
+			public void run() {
+				int missionId = mManager.startMission(url, location, name, isAudio, threads);
+				mBinder.onMissionAdded(mManager.getMission(missionId));
+			}
+		});
+	}
+
 	@Override
 	public int onStartCommand(Intent intent, int flags, int startId) {
 		if (DEBUG) {
 			Log.d(TAG, "Starting");
 		}
-		
+		Log.i(TAG, "Got intent: " + intent);
+		String action = intent.getAction();
+		if(action != null && action.equals(Intent.ACTION_RUN)) {
+			String name = intent.getStringExtra(EXTRA_NAME);
+			String location = intent.getStringExtra(EXTRA_LOCATION);
+			int threads = intent.getIntExtra(EXTRA_THREADS, 1);
+			boolean isAudio = intent.getBooleanExtra(EXTRA_IS_AUDIO, false);
+			String url = intent.getDataString();
+			startMissionAsync(url, location, name, isAudio, threads);
+		}
 		return START_NOT_STICKY;
 	}
 
@@ -119,52 +181,76 @@ public class DownloadManagerService extends Service implements DownloadMission.M
 		for (int i = 0; i < mManager.getCount(); i++) {
 			mManager.pauseMission(i);
 		}
-		
+
 		stopForeground(true);
 	}
 	
 	@Override
 	public IBinder onBind(Intent intent) {
+		int permissionCheck;
+		if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.JELLY_BEAN) {
+			permissionCheck = PermissionChecker.checkSelfPermission(this, Manifest.permission.READ_EXTERNAL_STORAGE);
+			if(permissionCheck == PermissionChecker.PERMISSION_DENIED) {
+				Toast.makeText(this, "Permission denied (read)", Toast.LENGTH_SHORT).show();
+			}
+		}
+
+		permissionCheck = PermissionChecker.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE);
+		if(permissionCheck == PermissionChecker.PERMISSION_DENIED) {
+			Toast.makeText(this, "Permission denied (write)", Toast.LENGTH_SHORT).show();
+		}
+
 		return mBinder;
 	}
-	
 
-	@Override
-	public void onProgressUpdate(long done, long total) {
-
-		long now = System.currentTimeMillis();
-
-		long delta = now - mLastTimeStamp;
-
-		if (delta > 2000) {
-			postUpdateMessage();
-			mLastTimeStamp = now;
-		}
-	}
-
-	@Override
-	public void onFinish() {
-		postUpdateMessage();
-	}
-
-	@Override
-	public void onError(int errCode) {
-		postUpdateMessage();
-	}
-	
 	private void postUpdateMessage() {
-		mHandler.sendEmptyMessage(0);
+		mHandler.sendEmptyMessage(UPDATE_MESSAGE);
 	}
 	
 	private void updateState(int runningCount) {
 		if (runningCount == 0) {
 			stopForeground(true);
 		} else {
-			startForeground(1000, mNotification);
+			startForeground(NOTIFICATION_ID, mNotification);
 		}
 	}
-	
-	
+
+	public static void startMission(Context context, String url, String location, String name, boolean isAudio, int threads) {
+		Intent intent = new Intent(context, DownloadManagerService.class);
+		intent.setAction(Intent.ACTION_RUN);
+		intent.setData(Uri.parse(url));
+		intent.putExtra(EXTRA_NAME, name);
+		intent.putExtra(EXTRA_LOCATION, location);
+		intent.putExtra(EXTRA_IS_AUDIO, isAudio);
+		intent.putExtra(EXTRA_THREADS, threads);
+		context.startService(intent);
+	}
+
+
+	class MissionListener implements DownloadMission.MissionListener {
+		@Override
+		public void onProgressUpdate(DownloadMission downloadMission, long done, long total) {
+			long now = System.currentTimeMillis();
+			long delta = now - mLastTimeStamp;
+			if (delta > 2000) {
+				postUpdateMessage();
+				mLastTimeStamp = now;
+			}
+		}
+
+		@Override
+		public void onFinish(DownloadMission downloadMission) {
+			postUpdateMessage();
+			notifyMediaScanner(downloadMission);
+		}
+
+		@Override
+		public void onError(DownloadMission downloadMission, int errCode) {
+			postUpdateMessage();
+		}
+	}
+
+
 	// Wrapper of DownloadManager
 	public class DMBinder extends Binder {
 		public DownloadManager getDownloadManager() {
@@ -172,15 +258,13 @@ public class DownloadManagerService extends Service implements DownloadMission.M
 		}
 		
 		public void onMissionAdded(DownloadMission mission) {
-			mission.addListener(DownloadManagerService.this);
+			mission.addListener(missionListener);
 			postUpdateMessage();
 		}
 		
 		public void onMissionRemoved(DownloadMission mission) {
-			mission.removeListener(DownloadManagerService.this);
+			mission.removeListener(missionListener);
 			postUpdateMessage();
 		}
-		
 	}
-
 }

app/src/main/java/us/shandian/giga/ui/adapter/MissionAdapter.java

@@ -5,6 +5,9 @@ import android.content.Context;
 import android.content.Intent;
 import android.net.Uri;
 import android.os.AsyncTask;
+import android.os.Build;
+import android.support.v4.content.FileProvider;
+import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.Menu;
 import android.view.MenuItem;
@@ -19,6 +22,7 @@ import android.support.v7.widget.RecyclerView;
 
 import java.io.File;
 import java.util.HashMap;
+import java.util.Locale;
 import java.util.Map;
 
 import org.schabi.newpipe.R;
@@ -28,10 +32,14 @@ import us.shandian.giga.service.DownloadManagerService;
 import us.shandian.giga.ui.common.ProgressDrawable;
 import us.shandian.giga.util.Utility;
 
+import static android.content.Intent.FLAG_GRANT_PREFIX_URI_PERMISSION;
+import static android.content.Intent.FLAG_GRANT_READ_URI_PERMISSION;
+
 public class MissionAdapter extends RecyclerView.Adapter<MissionAdapter.ViewHolder>
 {
 	private static final Map<Integer, String> ALGORITHMS = new HashMap<>();
-	
+	private static final String TAG = "MissionAdapter";
+
 	static {
 		ALGORITHMS.put(R.id.md5, "MD5");
 		ALGORITHMS.put(R.id.sha1, "SHA1");
@@ -143,9 +151,8 @@ public class MissionAdapter extends RecyclerView.Adapter<MissionAdapter.ViewHold
 				h.status.setText(R.string.msg_error);
 			} else {
 				float progress = (float) h.mission.done / h.mission.length;
-				h.status.setText(String.format("%.2f%%", progress * 100));
+				h.status.setText(String.format(Locale.US, "%.2f%%", progress * 100));
 				h.progress.setProgress(progress);
-			
 			}
 		}
 		
@@ -212,23 +219,23 @@ public class MissionAdapter extends RecyclerView.Adapter<MissionAdapter.ViewHold
 						h.lastDone = -1;
 						return true;
 					case R.id.view:
-						Intent i = new Intent();
-						i.setAction(Intent.ACTION_VIEW);
-						File f = new File(h.mission.location + "/" + h.mission.name);
+						File f = new File(h.mission.location, h.mission.name);
 						String ext = Utility.getFileExt(h.mission.name);
-						
-						if (ext == null) return false;
+
+						Log.d(TAG, "Viewing file: " + f.getAbsolutePath() + " ext: " + ext);
+
+						if (ext == null) {
+							Log.w(TAG, "Can't view file because it has no extension: " +
+									h.mission.name);
+							return false;
+						}
 						
 						String mime = MimeTypeMap.getSingleton().getMimeTypeFromExtension(ext.substring(1));
-						
+						Log.v(TAG, "Mime: " + mime + " package: " + mContext.getApplicationContext().getPackageName() + ".provider");
 						if (f.exists()) {
-							i.setDataAndType(Uri.fromFile(f), mime);
-							
-							try {
-								mContext.startActivity(i);
-							} catch (Exception e) {
-								
-							}
+							viewFileWithFileProvider(f, mime);
+						} else {
+							Log.w(TAG, "File doesn't exist");
 						}
 						
 						return true;
@@ -249,6 +256,34 @@ public class MissionAdapter extends RecyclerView.Adapter<MissionAdapter.ViewHold
 		
 		popup.show();
 	}
+
+	private void viewFile(File file, String mimetype) {
+		Intent intent = new Intent();
+		intent.setAction(Intent.ACTION_VIEW);
+		intent.setDataAndType(Uri.fromFile(file), mimetype);
+		intent.addFlags(FLAG_GRANT_READ_URI_PERMISSION);
+		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
+			intent.addFlags(FLAG_GRANT_PREFIX_URI_PERMISSION);
+		}
+		//mContext.grantUriPermission(packageName, uri, Intent.FLAG_GRANT_READ_URI_PERMISSION);
+		Log.v(TAG, "Starting intent: " + intent);
+		mContext.startActivity(intent);
+	}
+
+	private void viewFileWithFileProvider(File file, String mimetype) {
+		String ourPackage = mContext.getApplicationContext().getPackageName();
+		Uri uri = FileProvider.getUriForFile(mContext,  ourPackage + ".provider", file);
+		Intent intent = new Intent();
+		intent.setAction(Intent.ACTION_VIEW);
+		intent.setDataAndType(uri, mimetype);
+		intent.addFlags(FLAG_GRANT_READ_URI_PERMISSION);
+		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
+			intent.addFlags(FLAG_GRANT_PREFIX_URI_PERMISSION);
+		}
+		//mContext.grantUriPermission(packageName, uri, Intent.FLAG_GRANT_READ_URI_PERMISSION);
+		Log.v(TAG, "Starting intent: " + intent);
+		mContext.startActivity(intent);
+	}
 	
 	private class ChecksumTask extends AsyncTask<String, Void, String> {
 		ProgressDialog prog;
@@ -280,7 +315,7 @@ public class MissionAdapter extends RecyclerView.Adapter<MissionAdapter.ViewHold
 	static class ViewHolder extends RecyclerView.ViewHolder {
 		public DownloadMission mission;
 		public int position;
-		
+
 		public TextView status;
 		public ImageView icon;
 		public TextView name;
@@ -289,7 +324,7 @@ public class MissionAdapter extends RecyclerView.Adapter<MissionAdapter.ViewHold
 		public ImageView menu;
 		public ProgressDrawable progress;
 		public MissionObserver observer;
-		
+
 		public long lastTimeStamp = -1;
 		public long lastDone = -1;
 		public int colorId;
@@ -316,12 +351,12 @@ public class MissionAdapter extends RecyclerView.Adapter<MissionAdapter.ViewHold
 		}
 		
 		@Override
-		public void onProgressUpdate(long done, long total) {
+		public void onProgressUpdate(DownloadMission downloadMission, long done, long total) {
 			mAdapter.updateProgress(mHolder);
 		}
 
 		@Override
-		public void onFinish() {
+		public void onFinish(DownloadMission downloadMission) {
 			//mAdapter.mManager.deleteMission(mHolder.position);
 			// TODO Notification
 			//mAdapter.notifyDataSetChanged();
@@ -332,7 +367,7 @@ public class MissionAdapter extends RecyclerView.Adapter<MissionAdapter.ViewHold
 		}
 
 		@Override
-		public void onError(int errCode) {
+		public void onError(DownloadMission downloadMission, int errCode) {
 			mAdapter.updateProgress(mHolder);
 		}
 		

app/src/main/java/us/shandian/giga/ui/fragment/MissionsFragment.java

@@ -40,7 +40,7 @@ public abstract class MissionsFragment extends Fragment
 	private MissionAdapter mAdapter;
 	private GridLayoutManager mGridManager;
 	private LinearLayoutManager mLinearManager;
-	private Activity mActivity;
+	private Context mActivity;
 	
 	private ServiceConnection mConnection = new ServiceConnection() {
 
@@ -65,7 +65,7 @@ public abstract class MissionsFragment extends Fragment
 
 		mPrefs = PreferenceManager.getDefaultSharedPreferences(getActivity());
 		mLinear = mPrefs.getBoolean("linear", false);
-		
+
 		// Bind the service
 		Intent i = new Intent();
 		i.setClass(getActivity(), DownloadManagerService.class);
@@ -84,15 +84,30 @@ public abstract class MissionsFragment extends Fragment
 		return v;
 	}
 
+	/** Added in API level 23. */
+    @Override
+	public void onAttach(Context activity) {
+		super.onAttach(activity);
+
+		// Bug: in api< 23 this is never called
+		// so mActivity=null
+		// so app crashes with nullpointer exception
+		mActivity = activity;
+	}
+
+	/** deprecated in API level 23,
+	 * but must remain to allow compatibility with api<23 */
 	@Override
 	public void onAttach(Activity activity) {
 		super.onAttach(activity);
+
 		mActivity = activity;
 	}
 
 	@Override
-	public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
-
+	public void onDestroyView() {
+		super.onDestroyView();
+		getActivity().unbindService(mConnection);
 	}
 
 	@Override