-Added helper text on click for background and popup button on detail fragment for feature discovery.

-Fixed popup video queuing causes existing popup player to change quality.

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

@@ -28,6 +28,7 @@ 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;
 import android.widget.FrameLayout;
@@ -144,6 +145,7 @@ public class VideoDetailFragment extends BaseStateFragment<StreamInfo> implement
 
     private TextView detailControlsBackground;
     private TextView detailControlsPopup;
+    private TextView appendControlsDetail;
 
     private LinearLayout videoDescriptionRootLayout;
     private TextView videoUploadDateView;
@@ -419,6 +421,7 @@ public class VideoDetailFragment extends BaseStateFragment<StreamInfo> implement
 
         detailControlsBackground = rootView.findViewById(R.id.detail_controls_background);
         detailControlsPopup = rootView.findViewById(R.id.detail_controls_popup);
+        appendControlsDetail = rootView.findViewById(R.id.touch_append_detail);
 
         videoDescriptionRootLayout = rootView.findViewById(R.id.detail_description_root_layout);
         videoUploadDateView = rootView.findViewById(R.id.detail_upload_date_view);
@@ -469,6 +472,22 @@ public class VideoDetailFragment extends BaseStateFragment<StreamInfo> implement
         detailControlsPopup.setLongClickable(true);
         detailControlsBackground.setOnLongClickListener(this);
         detailControlsPopup.setOnLongClickListener(this);
+        detailControlsBackground.setOnTouchListener(getOnControlsTouchListener());
+        detailControlsPopup.setOnTouchListener(getOnControlsTouchListener());
+    }
+
+    private View.OnTouchListener getOnControlsTouchListener() {
+        return new View.OnTouchListener() {
+            @Override
+            public boolean onTouch(View view, MotionEvent motionEvent) {
+                if (motionEvent.getAction() == MotionEvent.ACTION_DOWN) {
+                    appendControlsDetail.setVisibility(View.VISIBLE);
+                } else {
+                    appendControlsDetail.setVisibility(View.GONE);
+                }
+                return false;
+            }
+        };
     }
 
     private void initThumbnailViews(StreamInfo info) {

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

@@ -289,9 +289,7 @@ public final class BackgroundPlayer extends Service {
         }
 
         @Override
-        public void handleIntent(Intent intent) {
-            super.handleIntent(intent);
-
+        protected void postProcess(@NonNull final Intent intent) {
             resetNotification();
             startForeground(NOTIFICATION_ID, notBuilder.build());
 

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

@@ -251,6 +251,8 @@ public abstract class BasePlayer implements Player.EventListener,
                 });
     }
 
+    protected abstract void postProcess(@NonNull final Intent intent);
+
     public void handleIntent(Intent intent) {
         if (DEBUG) Log.d(TAG, "handleIntent() called with: intent = [" + intent + "]");
         if (intent == null) return;
@@ -284,6 +286,7 @@ public abstract class BasePlayer implements Player.EventListener,
 
         // Good to go...
         initPlayback(this, queue);
+        postProcess(intent);
     }
 
     protected void initPlayback(@NonNull final PlaybackListener listener, @NonNull final PlayQueue queue) {

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

@@ -270,11 +270,7 @@ public final class MainVideoPlayer extends Activity {
         @Override
         public int getPreferredResolution() {
             if (sharedPreferences == null || context == null) return Integer.MAX_VALUE;
-
-            return Localization.resolutionOf(sharedPreferences.getString(
-                    context.getString(R.string.default_resolution_key),
-                    context.getString(R.string.default_resolution_value)
-            ));
+            return Localization.resolutionOf(sharedPreferences.getString(context.getString(R.string.default_resolution_key), context.getString(R.string.default_resolution_value)));
         }
 
         /*//////////////////////////////////////////////////////////////////////////

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

@@ -411,10 +411,7 @@ public final class PopupVideoPlayer extends Service {
         @Override
         public int getPreferredResolution() {
             if (sharedPreferences == null || context == null) return Integer.MAX_VALUE;
-            return Localization.resolutionOf(sharedPreferences.getString(
-                    context.getString(R.string.default_popup_resolution_key),
-                    context.getString(R.string.default_popup_resolution_value)
-            ));
+            return Localization.resolutionOf(sharedPreferences.getString(context.getString(R.string.default_popup_resolution_key), context.getString(R.string.default_popup_resolution_value)));
         }
 
         @Override

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

@@ -217,11 +217,7 @@ public abstract class VideoPlayer extends BasePlayer implements SimpleExoPlayer.
     }
 
     @Override
-    @SuppressWarnings("unchecked")
-    public void handleIntent(Intent intent) {
-        super.handleIntent(intent);
-        if (intent == null) return;
-
+    protected void postProcess(@NonNull final Intent intent) {
         final int resolutionTarget = intent.getIntExtra(MAX_RESOLUTION, getPreferredResolution());
         trackSelector.setParameters(
                 // Assume video is horizontal