Notification Improvements

- add MediaStyle notifications for Background and Popup playback
- reduce excessive notification updating ( / recreating of Notification.Builder object) when playing background / popup media
- add new buffering state indicator (can be disabled)
- upscale close icon / downscale replay icon
- add notification slot settings
- move notification settings to appearance
- fix Metadata (song title, artist and album art) sometimes not being set correctly
- other misc notification fixes

Co-authored-by: wb9688 <wb9688@users.noreply.github.com>

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

@@ -19,44 +19,33 @@
 
 package org.schabi.newpipe.player;
 
-import android.app.NotificationManager;
-import android.app.PendingIntent;
 import android.app.Service;
 import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;
 import android.content.SharedPreferences;
-import android.content.res.Resources;
 import android.graphics.Bitmap;
 import android.os.Build;
 import android.os.IBinder;
 import android.preference.PreferenceManager;
 import android.util.Log;
 import android.view.View;
-import android.widget.RemoteViews;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
-import androidx.annotation.RequiresApi;
-import androidx.core.app.NotificationCompat;
 
 import com.google.android.exoplayer2.PlaybackParameters;
-import com.google.android.exoplayer2.Player;
 import com.google.android.exoplayer2.source.MediaSource;
 import com.nostra13.universalimageloader.core.assist.FailReason;
 
-import org.schabi.newpipe.BuildConfig;
 import org.schabi.newpipe.R;
 import org.schabi.newpipe.extractor.stream.StreamInfo;
 import org.schabi.newpipe.player.event.PlayerEventListener;
 import org.schabi.newpipe.player.playqueue.PlayQueueItem;
 import org.schabi.newpipe.player.resolver.AudioPlaybackResolver;
 import org.schabi.newpipe.player.resolver.MediaSourceTag;
-import org.schabi.newpipe.util.BitmapUtils;
-import org.schabi.newpipe.util.NavigationHelper;
 import org.schabi.newpipe.util.ThemeHelper;
 
-import static org.schabi.newpipe.player.helper.PlayerHelper.getTimeString;
 import static org.schabi.newpipe.util.Localization.assureCorrectAppLanguage;
 
 /**
@@ -65,6 +54,9 @@ import static org.schabi.newpipe.util.Localization.assureCorrectAppLanguage;
  * @author mauriciocolli
  */
 public final class BackgroundPlayer extends Service {
+    private static final String TAG = "BackgroundPlayer";
+    private static final boolean DEBUG = BasePlayer.DEBUG;
+
     public static final String ACTION_CLOSE
             = "org.schabi.newpipe.player.BackgroundPlayer.CLOSE";
     public static final String ACTION_PLAY_PAUSE
@@ -79,30 +71,27 @@ public final class BackgroundPlayer extends Service {
             = "org.schabi.newpipe.player.BackgroundPlayer.ACTION_FAST_REWIND";
     public static final String ACTION_FAST_FORWARD
             = "org.schabi.newpipe.player.BackgroundPlayer.ACTION_FAST_FORWARD";
+    public static final String ACTION_BUFFERING
+            = "org.schabi.newpipe.player.BackgroundPlayer.ACTION_BUFFERING";
+    public static final String ACTION_SHUFFLE
+            = "org.schabi.newpipe.player.BackgroundPlayer.ACTION_SHUFFLE";
 
     public static final String SET_IMAGE_RESOURCE_METHOD = "setImageResource";
-    private static final String TAG = "BackgroundPlayer";
+
-    private static final boolean DEBUG = BasePlayer.DEBUG;
+
-    private static final int NOTIFICATION_ID = 123789;
-    private static final int NOTIFICATION_UPDATES_BEFORE_RESET = 60;
     private BasePlayerImpl basePlayerImpl;
+    private SharedPreferences sharedPreferences;
+
+    private boolean shouldUpdateOnProgress; // only used for old notifications
+    private boolean isForwardPressed;
+    private boolean isRewindPressed;
 
     /*//////////////////////////////////////////////////////////////////////////
     // Service-Activity Binder
     //////////////////////////////////////////////////////////////////////////*/
-    private SharedPreferences sharedPreferences;
 
-    /*//////////////////////////////////////////////////////////////////////////
-    // Notification
-    //////////////////////////////////////////////////////////////////////////*/
     private PlayerEventListener activityListener;
     private IBinder mBinder;
-    private NotificationManager notificationManager;
-    private NotificationCompat.Builder notBuilder;
-    private RemoteViews notRemoteView;
-    private RemoteViews bigNotRemoteView;
-    private boolean shouldUpdateOnProgress;
-    private int timesNotificationUpdated;
 
     /*//////////////////////////////////////////////////////////////////////////
     // Service's LifeCycle
@@ -113,7 +102,7 @@ public final class BackgroundPlayer extends Service {
         if (DEBUG) {
             Log.d(TAG, "onCreate() called");
         }
-        notificationManager = ((NotificationManager) getSystemService(NOTIFICATION_SERVICE));
+
         sharedPreferences = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
         assureCorrectAppLanguage(this);
         ThemeHelper.setTheme(this);
@@ -127,7 +116,7 @@ public final class BackgroundPlayer extends Service {
     @Override
     public int onStartCommand(final Intent intent, final int flags, final int startId) {
         if (DEBUG) {
-            Log.d(TAG, "onStartCommand() called with: intent = [" + intent + "], "
+            Log.d(TAG, "N_ onStartCommand() called with: intent = [" + intent + "], "
                     + "flags = [" + flags + "], startId = [" + startId + "]");
         }
         basePlayerImpl.handleIntent(intent);
@@ -160,7 +149,7 @@ public final class BackgroundPlayer extends Service {
     //////////////////////////////////////////////////////////////////////////*/
     private void onClose() {
         if (DEBUG) {
-            Log.d(TAG, "onClose() called");
+            Log.d(TAG, "N_ onClose() called");
         }
 
         if (basePlayerImpl != null) {
@@ -168,9 +157,8 @@ public final class BackgroundPlayer extends Service {
             basePlayerImpl.stopActivityBinding();
             basePlayerImpl.destroy();
         }
-        if (notificationManager != null) {
+        NotificationUtil.getInstance()
-            notificationManager.cancel(NOTIFICATION_ID);
+                .cancelNotification(NotificationUtil.NOTIFICATION_ID_BACKGROUND);
-        }
         mBinder = null;
         basePlayerImpl = null;
 
@@ -191,168 +179,9 @@ public final class BackgroundPlayer extends Service {
         }
     }
 
-    /*//////////////////////////////////////////////////////////////////////////
-    // Notification
-    //////////////////////////////////////////////////////////////////////////*/
-
-    private void resetNotification() {
-        notBuilder = createNotification();
-        timesNotificationUpdated = 0;
-    }
-
-    private NotificationCompat.Builder createNotification() {
-        notRemoteView = new RemoteViews(BuildConfig.APPLICATION_ID,
-                R.layout.player_background_notification);
-        bigNotRemoteView = new RemoteViews(BuildConfig.APPLICATION_ID,
-                R.layout.player_background_notification_expanded);
-
-        setupNotification(notRemoteView);
-        setupNotification(bigNotRemoteView);
-
-        NotificationCompat.Builder builder = new NotificationCompat
-                .Builder(this, getString(R.string.notification_channel_id))
-                .setOngoing(true)
-                .setSmallIcon(R.drawable.ic_newpipe_triangle_white)
-                .setVisibility(NotificationCompat.VISIBILITY_PUBLIC)
-                .setCustomContentView(notRemoteView)
-                .setCustomBigContentView(bigNotRemoteView);
-
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
-            setLockScreenThumbnail(builder);
-        }
-
-        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.JELLY_BEAN) {
-            builder.setPriority(NotificationCompat.PRIORITY_MAX);
-        }
-        return builder;
-    }
-
-    @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
-    private void setLockScreenThumbnail(final NotificationCompat.Builder builder) {
-        boolean isLockScreenThumbnailEnabled = sharedPreferences.getBoolean(
-                getString(R.string.enable_lock_screen_video_thumbnail_key), true);
-
-        if (isLockScreenThumbnailEnabled) {
-            basePlayerImpl.mediaSessionManager.setLockScreenArt(
-                    builder,
-                    getCenteredThumbnailBitmap()
-            );
-        } else {
-            basePlayerImpl.mediaSessionManager.clearLockScreenArt(builder);
-        }
-    }
-
-    @Nullable
-    private Bitmap getCenteredThumbnailBitmap() {
-        final int screenWidth = Resources.getSystem().getDisplayMetrics().widthPixels;
-        final int screenHeight = Resources.getSystem().getDisplayMetrics().heightPixels;
-
-        return BitmapUtils.centerCrop(basePlayerImpl.getThumbnail(), screenWidth, screenHeight);
-    }
-
-    private void setupNotification(final RemoteViews remoteViews) {
-        if (basePlayerImpl == null) {
-            return;
-        }
-
-        remoteViews.setTextViewText(R.id.notificationSongName, basePlayerImpl.getVideoTitle());
-        remoteViews.setTextViewText(R.id.notificationArtist, basePlayerImpl.getUploaderName());
-
-        remoteViews.setOnClickPendingIntent(R.id.notificationPlayPause,
-                PendingIntent.getBroadcast(this, NOTIFICATION_ID,
-                        new Intent(ACTION_PLAY_PAUSE), PendingIntent.FLAG_UPDATE_CURRENT));
-        remoteViews.setOnClickPendingIntent(R.id.notificationStop,
-                PendingIntent.getBroadcast(this, NOTIFICATION_ID,
-                        new Intent(ACTION_CLOSE), PendingIntent.FLAG_UPDATE_CURRENT));
-        remoteViews.setOnClickPendingIntent(R.id.notificationRepeat,
-                PendingIntent.getBroadcast(this, NOTIFICATION_ID,
-                        new Intent(ACTION_REPEAT), PendingIntent.FLAG_UPDATE_CURRENT));
-
-        // Starts background player activity -- attempts to unlock lockscreen
-        final Intent intent = NavigationHelper.getBackgroundPlayerActivityIntent(this);
-        remoteViews.setOnClickPendingIntent(R.id.notificationContent,
-                PendingIntent.getActivity(this, NOTIFICATION_ID, intent,
-                        PendingIntent.FLAG_UPDATE_CURRENT));
-
-        if (basePlayerImpl.playQueue != null && basePlayerImpl.playQueue.size() > 1) {
-            remoteViews.setInt(R.id.notificationFRewind, SET_IMAGE_RESOURCE_METHOD,
-                    R.drawable.exo_controls_previous);
-            remoteViews.setInt(R.id.notificationFForward, SET_IMAGE_RESOURCE_METHOD,
-                    R.drawable.exo_controls_next);
-            remoteViews.setOnClickPendingIntent(R.id.notificationFRewind,
-                    PendingIntent.getBroadcast(this, NOTIFICATION_ID,
-                            new Intent(ACTION_PLAY_PREVIOUS), PendingIntent.FLAG_UPDATE_CURRENT));
-            remoteViews.setOnClickPendingIntent(R.id.notificationFForward,
-                    PendingIntent.getBroadcast(this, NOTIFICATION_ID,
-                            new Intent(ACTION_PLAY_NEXT), PendingIntent.FLAG_UPDATE_CURRENT));
-        } else {
-            remoteViews.setInt(R.id.notificationFRewind, SET_IMAGE_RESOURCE_METHOD,
-                    R.drawable.exo_controls_rewind);
-            remoteViews.setInt(R.id.notificationFForward, SET_IMAGE_RESOURCE_METHOD,
-                    R.drawable.exo_controls_fastforward);
-            remoteViews.setOnClickPendingIntent(R.id.notificationFRewind,
-                    PendingIntent.getBroadcast(this, NOTIFICATION_ID,
-                            new Intent(ACTION_FAST_REWIND), PendingIntent.FLAG_UPDATE_CURRENT));
-            remoteViews.setOnClickPendingIntent(R.id.notificationFForward,
-                    PendingIntent.getBroadcast(this, NOTIFICATION_ID,
-                            new Intent(ACTION_FAST_FORWARD), PendingIntent.FLAG_UPDATE_CURRENT));
-        }
-
-        setRepeatModeIcon(remoteViews, basePlayerImpl.getRepeatMode());
-    }
-
-    /**
-     * Updates the notification, and the play/pause button in it.
-     * Used for changes on the remoteView
-     *
-     * @param drawableId if != -1, sets the drawable with that id on the play/pause button
-     */
-    private synchronized void updateNotification(final int drawableId) {
-//        if (DEBUG) {
-//            Log.d(TAG, "updateNotification() called with: drawableId = [" + drawableId + "]");
-//        }
-        if (notBuilder == null) {
-            return;
-        }
-        if (drawableId != -1) {
-            if (notRemoteView != null) {
-                notRemoteView.setImageViewResource(R.id.notificationPlayPause, drawableId);
-            }
-            if (bigNotRemoteView != null) {
-                bigNotRemoteView.setImageViewResource(R.id.notificationPlayPause, drawableId);
-            }
-        }
-        notificationManager.notify(NOTIFICATION_ID, notBuilder.build());
-        timesNotificationUpdated++;
-    }
-
-    /*//////////////////////////////////////////////////////////////////////////
-    // Utils
-    //////////////////////////////////////////////////////////////////////////*/
-
-    private void setRepeatModeIcon(final RemoteViews remoteViews, final int repeatMode) {
-        switch (repeatMode) {
-            case Player.REPEAT_MODE_OFF:
-                remoteViews.setInt(R.id.notificationRepeat, SET_IMAGE_RESOURCE_METHOD,
-                        R.drawable.exo_controls_repeat_off);
-                break;
-            case Player.REPEAT_MODE_ONE:
-                remoteViews.setInt(R.id.notificationRepeat, SET_IMAGE_RESOURCE_METHOD,
-                        R.drawable.exo_controls_repeat_one);
-                break;
-            case Player.REPEAT_MODE_ALL:
-                remoteViews.setInt(R.id.notificationRepeat, SET_IMAGE_RESOURCE_METHOD,
-                        R.drawable.exo_controls_repeat_all);
-                break;
-        }
-    }
-    //////////////////////////////////////////////////////////////////////////
-
     protected class BasePlayerImpl extends BasePlayer {
         @NonNull
         private final AudioPlaybackResolver resolver;
-        private int cachedDuration;
-        private String cachedDurationString;
 
         BasePlayerImpl(final Context context) {
             super(context);
@@ -367,51 +196,49 @@ public final class BackgroundPlayer extends Service {
         @Override
         public void handleIntent(final Intent intent) {
             super.handleIntent(intent);
-
+            if (DEBUG) {
-            resetNotification();
+                Log.d(TAG, "N_ handleIntent()");
-            if (bigNotRemoteView != null) {
-                bigNotRemoteView.setProgressBar(R.id.notificationProgressBar, 100, 0, false);
             }
-            if (notRemoteView != null) {
+            NotificationUtil.getInstance().recreateBackgroundPlayerNotification(context,
-                notRemoteView.setProgressBar(R.id.notificationProgressBar, 100, 0, false);
+                    basePlayerImpl.mediaSessionManager.getSessionToken(), basePlayerImpl,
-            }
+                    sharedPreferences, true); // false
-            startForeground(NOTIFICATION_ID, notBuilder.build());
+            NotificationUtil.getInstance().setProgressbarOnOldNotifications(100, 0, false);
+            startForeground(NotificationUtil.NOTIFICATION_ID_BACKGROUND,
+                    NotificationUtil.getInstance().notificationBuilder.build());
         }
 
         /*//////////////////////////////////////////////////////////////////////////
         // Thumbnail Loading
         //////////////////////////////////////////////////////////////////////////*/
 
-        private void updateNotificationThumbnail() {
-            if (basePlayerImpl == null) {
-                return;
-            }
-            if (notRemoteView != null) {
-                notRemoteView.setImageViewBitmap(R.id.notificationCover,
-                        basePlayerImpl.getThumbnail());
-            }
-            if (bigNotRemoteView != null) {
-                bigNotRemoteView.setImageViewBitmap(R.id.notificationCover,
-                        basePlayerImpl.getThumbnail());
-            }
-        }
-
         @Override
         public void onLoadingComplete(final String imageUri, final View view,
                                       final Bitmap loadedImage) {
             super.onLoadingComplete(imageUri, view, loadedImage);
-            resetNotification();
+            if (DEBUG) {
-            updateNotificationThumbnail();
+                Log.d(TAG, "N_ onLoadingComplete()");
-            updateNotification(-1);
+            }
+            NotificationUtil.getInstance().recreateBackgroundPlayerNotification(context,
+                    basePlayerImpl.mediaSessionManager.getSessionToken(), basePlayerImpl,
+                    sharedPreferences, true); //true
+            NotificationUtil.getInstance().updateOldNotificationsThumbnail(basePlayerImpl);
+            NotificationUtil.getInstance().updateBackgroundPlayerNotification(-1,
+                    getBaseContext(), basePlayerImpl, sharedPreferences);
         }
 
         @Override
         public void onLoadingFailed(final String imageUri, final View view,
                                     final FailReason failReason) {
             super.onLoadingFailed(imageUri, view, failReason);
-            resetNotification();
+            if (DEBUG) {
-            updateNotificationThumbnail();
+                Log.d(TAG, "N_ onLoadingFailed()");
-            updateNotification(-1);
+            }
+            NotificationUtil.getInstance().recreateBackgroundPlayerNotification(context,
+                    basePlayerImpl.mediaSessionManager.getSessionToken(), basePlayerImpl,
+                    sharedPreferences, true); //true
+            NotificationUtil.getInstance().updateOldNotificationsThumbnail(basePlayerImpl);
+            NotificationUtil.getInstance().updateBackgroundPlayerNotification(-1,
+                    getBaseContext(), basePlayerImpl, sharedPreferences);
         }
 
         /*//////////////////////////////////////////////////////////////////////////
@@ -426,6 +253,14 @@ public final class BackgroundPlayer extends Service {
         @Override
         public void onShuffleClicked() {
             super.onShuffleClicked();
+            if (DEBUG) {
+                Log.d(TAG, "N_ onShuffleClicked:");
+            }
+            NotificationUtil.getInstance().recreateBackgroundPlayerNotification(context,
+                    basePlayerImpl.mediaSessionManager.getSessionToken(), basePlayerImpl,
+                    sharedPreferences);
+            NotificationUtil.getInstance().updateBackgroundPlayerNotification(-1,
+                    getBaseContext(), basePlayerImpl, sharedPreferences);
             updatePlayback();
         }
 
@@ -440,31 +275,35 @@ public final class BackgroundPlayer extends Service {
                                      final int bufferPercent) {
             updateProgress(currentProgress, duration, bufferPercent);
 
-            if (!shouldUpdateOnProgress) {
+            // setMetadata only updates the metadata when any of the metadata keys are null
-                return;
+            basePlayerImpl.mediaSessionManager.setMetadata(basePlayerImpl.getVideoTitle(),
-            }
+                    basePlayerImpl.getUploaderName(), basePlayerImpl.getThumbnail(), duration);
-            if (timesNotificationUpdated > NOTIFICATION_UPDATES_BEFORE_RESET) {
-                resetNotification();
 
-                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O /*Oreo*/) {
+            boolean areOldNotificationsEnabled = sharedPreferences.getBoolean(
-                    updateNotificationThumbnail();
+                    getString(R.string.enable_old_notifications_key), false);
+            if (areOldNotificationsEnabled) {
+                if (!shouldUpdateOnProgress) {
+                    return;
                 }
-            }
+                if (NotificationUtil.timesNotificationUpdated
-            if (bigNotRemoteView != null) {
+                        > NotificationUtil.NOTIFICATION_UPDATES_BEFORE_RESET) {
-                if (cachedDuration != duration) {
+                    NotificationUtil.getInstance().recreateBackgroundPlayerNotification(context,
-                    cachedDuration = duration;
+                            basePlayerImpl.mediaSessionManager.getSessionToken(), basePlayerImpl,
-                    cachedDurationString = getTimeString(duration);
+                            sharedPreferences);
+
+                    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+                        NotificationUtil.getInstance()
+                                .updateOldNotificationsThumbnail(basePlayerImpl);
+                    }
                 }
-                bigNotRemoteView.setProgressBar(R.id.notificationProgressBar, duration,
+
+                NotificationUtil.getInstance().setCachedDuration(currentProgress, duration);
+                NotificationUtil.getInstance().setProgressbarOnOldNotifications(duration,
                         currentProgress, false);
-                bigNotRemoteView.setTextViewText(R.id.notificationTime,
+
-                        getTimeString(currentProgress) + " / " + cachedDurationString);
+                NotificationUtil.getInstance().updateBackgroundPlayerNotification(-1,
+                        getBaseContext(), basePlayerImpl, sharedPreferences);
             }
-            if (notRemoteView != null) {
-                notRemoteView.setProgressBar(R.id.notificationProgressBar, duration,
-                        currentProgress, false);
-            }
-            updateNotification(-1);
         }
 
         @Override
@@ -482,12 +321,7 @@ public final class BackgroundPlayer extends Service {
         @Override
         public void destroy() {
             super.destroy();
-            if (notRemoteView != null) {
+            NotificationUtil.getInstance().unsetImageInOldNotifications();
-                notRemoteView.setImageViewBitmap(R.id.notificationCover, null);
-            }
-            if (bigNotRemoteView != null) {
-                bigNotRemoteView.setImageViewBitmap(R.id.notificationCover, null);
-            }
         }
 
         /*//////////////////////////////////////////////////////////////////////////
@@ -507,8 +341,14 @@ public final class BackgroundPlayer extends Service {
 
         @Override
         public void onRepeatModeChanged(final int i) {
-            resetNotification();
+            if (DEBUG) {
-            updateNotification(-1);
+                Log.d(TAG, "N_ onRepeatModeChanged()");
+            }
+            NotificationUtil.getInstance().recreateBackgroundPlayerNotification(context,
+                    basePlayerImpl.mediaSessionManager.getSessionToken(), basePlayerImpl,
+                    sharedPreferences);
+            NotificationUtil.getInstance().updateBackgroundPlayerNotification(-1,
+                    getBaseContext(), basePlayerImpl, sharedPreferences);
             updatePlayback();
         }
 
@@ -518,9 +358,15 @@ public final class BackgroundPlayer extends Service {
 
         protected void onMetadataChanged(@NonNull final MediaSourceTag tag) {
             super.onMetadataChanged(tag);
-            resetNotification();
+            if (DEBUG) {
-            updateNotificationThumbnail();
+                Log.d(TAG, "N_ onMetadataChanged()");
-            updateNotification(-1);
+            }
+            NotificationUtil.getInstance().recreateBackgroundPlayerNotification(context,
+                    basePlayerImpl.mediaSessionManager.getSessionToken(), basePlayerImpl,
+                    sharedPreferences);
+            NotificationUtil.getInstance().updateOldNotificationsThumbnail(basePlayerImpl);
+            NotificationUtil.getInstance().updateBackgroundPlayerNotification(-1,
+                    getBaseContext(), basePlayerImpl, sharedPreferences);
             updateMetadata();
         }
 
@@ -585,31 +431,36 @@ public final class BackgroundPlayer extends Service {
         //////////////////////////////////////////////////////////////////////////*/
 
         @Override
-        protected void setupBroadcastReceiver(final IntentFilter intentFltr) {
+        protected void setupBroadcastReceiver(final IntentFilter intentFilter) {
-            super.setupBroadcastReceiver(intentFltr);
+            super.setupBroadcastReceiver(intentFilter);
-            intentFltr.addAction(ACTION_CLOSE);
+            intentFilter.addAction(ACTION_CLOSE);
-            intentFltr.addAction(ACTION_PLAY_PAUSE);
+            intentFilter.addAction(ACTION_PLAY_PAUSE);
-            intentFltr.addAction(ACTION_REPEAT);
+            intentFilter.addAction(ACTION_REPEAT);
-            intentFltr.addAction(ACTION_PLAY_PREVIOUS);
+            intentFilter.addAction(ACTION_PLAY_PREVIOUS);
-            intentFltr.addAction(ACTION_PLAY_NEXT);
+            intentFilter.addAction(ACTION_PLAY_NEXT);
-            intentFltr.addAction(ACTION_FAST_REWIND);
+            intentFilter.addAction(ACTION_FAST_REWIND);
-            intentFltr.addAction(ACTION_FAST_FORWARD);
+            intentFilter.addAction(ACTION_FAST_FORWARD);
+            intentFilter.addAction(ACTION_BUFFERING);
+            intentFilter.addAction(ACTION_SHUFFLE);
+            intentFilter.addAction(Intent.ACTION_SCREEN_ON);
+            intentFilter.addAction(Intent.ACTION_SCREEN_OFF);
 
-            intentFltr.addAction(Intent.ACTION_SCREEN_ON);
+            intentFilter.addAction(Intent.ACTION_HEADSET_PLUG);
-            intentFltr.addAction(Intent.ACTION_SCREEN_OFF);
-
-            intentFltr.addAction(Intent.ACTION_HEADSET_PLUG);
         }
 
         @Override
         public void onBroadcastReceived(final Intent intent) {
             super.onBroadcastReceived(intent);
+
             if (intent == null || intent.getAction() == null) {
                 return;
             }
+
             if (DEBUG) {
-                Log.d(TAG, "onBroadcastReceived() called with: intent = [" + intent + "]");
+                // FIXME remove N_
+                Log.d(TAG, "N_ onBroadcastReceived() called with: intent = [" + intent + "]");
             }
+
             switch (intent.getAction()) {
                 case ACTION_CLOSE:
                     onClose();
@@ -627,9 +478,11 @@ public final class BackgroundPlayer extends Service {
                     onPlayPrevious();
                     break;
                 case ACTION_FAST_FORWARD:
+                    isForwardPressed = true;
                     onFastForward();
                     break;
                 case ACTION_FAST_REWIND:
+                    isRewindPressed = true;
                     onFastRewind();
                     break;
                 case Intent.ACTION_SCREEN_ON:
@@ -638,6 +491,17 @@ public final class BackgroundPlayer extends Service {
                 case Intent.ACTION_SCREEN_OFF:
                     onScreenOnOff(false);
                     break;
+                case ACTION_BUFFERING:
+                    onBuffering();
+                    break;
+                case ACTION_SHUFFLE:
+                    onShuffleClicked();
+                    break;
+                case "android.intent.action.HEADSET_PLUG": //FIXME
+                    /*notificationManager.cancel(NOTIFICATION_ID);
+                    mediaSessionManager.dispose();
+                    mediaSessionManager.enable(getBaseContext(), basePlayerImpl.simpleExoPlayer);*/
+                    break;
             }
         }
 
@@ -645,6 +509,31 @@ public final class BackgroundPlayer extends Service {
         // States
         //////////////////////////////////////////////////////////////////////////*/
 
+        @Override
+        public void onBuffering() {
+            super.onBuffering();
+            if (NotificationUtil.getInstance().notificationSlot0.contains("buffering")
+                    || NotificationUtil.getInstance().notificationSlot1.contains("buffering")
+                    || NotificationUtil.getInstance().notificationSlot2.contains("buffering")
+                    || NotificationUtil.getInstance().notificationSlot3.contains("buffering")
+                    || NotificationUtil.getInstance().notificationSlot4.contains("buffering")) {
+                if (basePlayerImpl.getCurrentState() == BasePlayer.STATE_PREFLIGHT
+                        || basePlayerImpl.getCurrentState() == BasePlayer.STATE_BLOCKED
+                        || basePlayerImpl.getCurrentState() == BasePlayer.STATE_BUFFERING) {
+                    if (!(isForwardPressed || isRewindPressed)) {
+                        if (DEBUG) {
+                            Log.d(TAG, "N_ onBuffering()");
+                        }
+                        NotificationUtil.getInstance().updateBackgroundPlayerNotification(-1,
+                                getBaseContext(), basePlayerImpl, sharedPreferences);
+                    } else {
+                        isForwardPressed = false;
+                        isRewindPressed = false;
+                    }
+                }
+            }
+        }
+
         @Override
         public void changeState(final int state) {
             super.changeState(state);
@@ -654,31 +543,50 @@ public final class BackgroundPlayer extends Service {
         @Override
         public void onPlaying() {
             super.onPlaying();
-            resetNotification();
+
-            updateNotificationThumbnail();
+            if (DEBUG) {
-            updateNotification(R.drawable.exo_controls_pause);
+                Log.d(TAG, "N_ onPlaying()");
+            }
+            NotificationUtil.getInstance().recreateBackgroundPlayerNotification(context,
+                    basePlayerImpl.mediaSessionManager.getSessionToken(), basePlayerImpl,
+                    sharedPreferences);
+            NotificationUtil.getInstance().updateOldNotificationsThumbnail(basePlayerImpl);
+            NotificationUtil.getInstance()
+                    .updateBackgroundPlayerNotification(R.drawable.ic_pause_white_24dp,
+                            getBaseContext(), basePlayerImpl, sharedPreferences);
         }
 
         @Override
         public void onPaused() {
             super.onPaused();
-            resetNotification();
+
-            updateNotificationThumbnail();
+            if (DEBUG) {
-            updateNotification(R.drawable.exo_controls_play);
+                Log.d(TAG, "N_ onPaused()");
+            }
+            NotificationUtil.getInstance().recreateBackgroundPlayerNotification(context,
+                    basePlayerImpl.mediaSessionManager.getSessionToken(), basePlayerImpl,
+                    sharedPreferences);
+            NotificationUtil.getInstance().updateOldNotificationsThumbnail(basePlayerImpl);
+            NotificationUtil.getInstance()
+                    .updateBackgroundPlayerNotification(R.drawable.ic_play_arrow_white_24dp,
+                            getBaseContext(), basePlayerImpl, sharedPreferences);
         }
 
         @Override
         public void onCompleted() {
             super.onCompleted();
-            resetNotification();
+            if (DEBUG) {
-            if (bigNotRemoteView != null) {
+                Log.d(TAG, "N_ onCompleted()");
-                bigNotRemoteView.setProgressBar(R.id.notificationProgressBar, 100, 100, false);
             }
-            if (notRemoteView != null) {
+
-                notRemoteView.setProgressBar(R.id.notificationProgressBar, 100, 100, false);
+            NotificationUtil.getInstance().recreateBackgroundPlayerNotification(context,
-            }
+                    basePlayerImpl.mediaSessionManager.getSessionToken(), basePlayerImpl,
-            updateNotificationThumbnail();
+                    sharedPreferences);
-            updateNotification(R.drawable.ic_replay_white_24dp);
+            NotificationUtil.getInstance().setProgressbarOnOldNotifications(100, 100, false);
+            NotificationUtil.getInstance().updateOldNotificationsThumbnail(basePlayerImpl);
+            NotificationUtil.getInstance()
+                    .updateBackgroundPlayerNotification(R.drawable.ic_replay_white_24dp,
+                            getBaseContext(), basePlayerImpl, sharedPreferences);
         }
     }
 }

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

@@ -22,8 +22,6 @@ package org.schabi.newpipe.player;
 import android.animation.Animator;
 import android.animation.AnimatorListenerAdapter;
 import android.annotation.SuppressLint;
-import android.app.NotificationManager;
-import android.app.PendingIntent;
 import android.app.Service;
 import android.content.Context;
 import android.content.Intent;
@@ -48,23 +46,19 @@ import android.view.animation.AnticipateInterpolator;
 import android.widget.ImageButton;
 import android.widget.ImageView;
 import android.widget.PopupMenu;
-import android.widget.RemoteViews;
 import android.widget.SeekBar;
 import android.widget.TextView;
 
 import androidx.annotation.NonNull;
-import androidx.core.app.NotificationCompat;
 
 import com.google.android.exoplayer2.C;
 import com.google.android.exoplayer2.PlaybackParameters;
-import com.google.android.exoplayer2.Player;
 import com.google.android.exoplayer2.text.CaptionStyleCompat;
 import com.google.android.exoplayer2.ui.AspectRatioFrameLayout;
 import com.google.android.exoplayer2.ui.SubtitleView;
 import com.google.android.material.floatingactionbutton.FloatingActionButton;
 import com.nostra13.universalimageloader.core.assist.FailReason;
 
-import org.schabi.newpipe.BuildConfig;
 import org.schabi.newpipe.R;
 import org.schabi.newpipe.extractor.stream.VideoStream;
 import org.schabi.newpipe.player.event.PlayerEventListener;
@@ -89,13 +83,28 @@ import static org.schabi.newpipe.util.Localization.assureCorrectAppLanguage;
  * @author mauriciocolli
  */
 public final class PopupVideoPlayer extends Service {
-    public static final String ACTION_CLOSE = "org.schabi.newpipe.player.PopupVideoPlayer.CLOSE";
-    public static final String ACTION_PLAY_PAUSE
-            = "org.schabi.newpipe.player.PopupVideoPlayer.PLAY_PAUSE";
-    public static final String ACTION_REPEAT = "org.schabi.newpipe.player.PopupVideoPlayer.REPEAT";
     private static final String TAG = ".PopupVideoPlayer";
     private static final boolean DEBUG = BasePlayer.DEBUG;
-    private static final int NOTIFICATION_ID = 40028922;
+
+    public static final String ACTION_CLOSE
+            = "org.schabi.newpipe.player.PopupVideoPlayer.CLOSE";
+    public static final String ACTION_PLAY_PAUSE
+            = "org.schabi.newpipe.player.PopupVideoPlayer.PLAY_PAUSE";
+    public static final String ACTION_REPEAT
+            = "org.schabi.newpipe.player.PopupVideoPlayer.REPEAT";
+    public static final String ACTION_FAST_REWIND
+            = "org.schabi.newpipe.player.PopupVideoPlayer.ACTION_FAST_REWIND";
+    public static final String ACTION_FAST_FORWARD
+            = "org.schabi.newpipe.player.PopupVideoPlayer.ACTION_FAST_FORWARD";
+    public static final String ACTION_PLAY_NEXT
+            = "org.schabi.newpipe.player.PopupVideoPlayer.ACTION_PLAY_NEXT";
+    public static final String ACTION_PLAY_PREVIOUS
+            = "org.schabi.newpipe.player.PopupVideoPlayer.ACTION_PLAY_PREVIOUS";
+    public static final String ACTION_BUFFERING
+            = "org.schabi.newpipe.player.PopupVideoPlayer.ACTION_BUFFERING";
+    public static final String ACTION_SHUFFLE
+            = "org.schabi.newpipe.player.PopupVideoPlayer.ACTION_SHUFFLE";
+
     private static final String POPUP_SAVED_WIDTH = "popup_saved_width";
     private static final String POPUP_SAVED_X = "popup_saved_x";
     private static final String POPUP_SAVED_Y = "popup_saved_y";
@@ -126,12 +135,12 @@ public final class PopupVideoPlayer extends Service {
     private float maximumWidth;
     private float maximumHeight;
 
-    private NotificationManager notificationManager;
+    private boolean isForwardPressed;
-    private NotificationCompat.Builder notBuilder;
+    private boolean isRewindPressed;
-    private RemoteViews notRemoteView;
 
     private VideoPlayerImpl playerImpl;
     private boolean isPopupClosing = false;
+    private SharedPreferences sharedPreferences;
 
     /*//////////////////////////////////////////////////////////////////////////
     // Service-Activity Binder
@@ -148,7 +157,7 @@ public final class PopupVideoPlayer extends Service {
     public void onCreate() {
         assureCorrectAppLanguage(this);
         windowManager = (WindowManager) getSystemService(WINDOW_SERVICE);
-        notificationManager = ((NotificationManager) getSystemService(NOTIFICATION_SERVICE));
+        sharedPreferences = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
 
         playerImpl = new VideoPlayerImpl(this);
         ThemeHelper.setTheme(this);
@@ -220,9 +229,9 @@ public final class PopupVideoPlayer extends Service {
 
         final boolean popupRememberSizeAndPos = PlayerHelper.isRememberingPopupDimensions(this);
         final float defaultSize = getResources().getDimension(R.dimen.popup_default_width);
-        SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
+        final SharedPreferences sharedPrefs = PreferenceManager.getDefaultSharedPreferences(this);
         popupWidth = popupRememberSizeAndPos
-                ? sharedPreferences.getFloat(POPUP_SAVED_WIDTH, defaultSize) : defaultSize;
+                ? sharedPrefs.getFloat(POPUP_SAVED_WIDTH, defaultSize) : defaultSize;
 
         final int layoutParamType = Build.VERSION.SDK_INT < android.os.Build.VERSION_CODES.O
                 ? WindowManager.LayoutParams.TYPE_PHONE
@@ -236,16 +245,16 @@ public final class PopupVideoPlayer extends Service {
         popupLayoutParams.gravity = Gravity.LEFT | Gravity.TOP;
         popupLayoutParams.softInputMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE;
 
-        int centerX = (int) (screenWidth / 2f - popupWidth / 2f);
+        final int centerX = (int) (screenWidth / 2f - popupWidth / 2f);
-        int centerY = (int) (screenHeight / 2f - popupHeight / 2f);
+        final int centerY = (int) (screenHeight / 2f - popupHeight / 2f);
         popupLayoutParams.x = popupRememberSizeAndPos
-                ? sharedPreferences.getInt(POPUP_SAVED_X, centerX) : centerX;
+                ? sharedPrefs.getInt(POPUP_SAVED_X, centerX) : centerX;
         popupLayoutParams.y = popupRememberSizeAndPos
-                ? sharedPreferences.getInt(POPUP_SAVED_Y, centerY) : centerY;
+                ? sharedPrefs.getInt(POPUP_SAVED_Y, centerY) : centerY;
 
         checkPopupPositionBounds();
 
-        PopupWindowGestureListener listener = new PopupWindowGestureListener();
+        final PopupWindowGestureListener listener = new PopupWindowGestureListener();
         popupGestureDetector = new GestureDetector(this, listener);
         rootView.setOnTouchListener(listener);
 
@@ -282,71 +291,6 @@ public final class PopupVideoPlayer extends Service {
         windowManager.addView(closeOverlayView, closeOverlayLayoutParams);
     }
 
-    /*//////////////////////////////////////////////////////////////////////////
-    // Notification
-    //////////////////////////////////////////////////////////////////////////*/
-
-    private void resetNotification() {
-        notBuilder = createNotification();
-    }
-
-    private NotificationCompat.Builder createNotification() {
-        notRemoteView = new RemoteViews(BuildConfig.APPLICATION_ID,
-                R.layout.player_popup_notification);
-
-        notRemoteView.setTextViewText(R.id.notificationSongName, playerImpl.getVideoTitle());
-        notRemoteView.setTextViewText(R.id.notificationArtist, playerImpl.getUploaderName());
-        notRemoteView.setImageViewBitmap(R.id.notificationCover, playerImpl.getThumbnail());
-
-        notRemoteView.setOnClickPendingIntent(R.id.notificationPlayPause,
-                PendingIntent.getBroadcast(this, NOTIFICATION_ID, new Intent(ACTION_PLAY_PAUSE),
-                        PendingIntent.FLAG_UPDATE_CURRENT));
-        notRemoteView.setOnClickPendingIntent(R.id.notificationStop,
-                PendingIntent.getBroadcast(this, NOTIFICATION_ID, new Intent(ACTION_CLOSE),
-                        PendingIntent.FLAG_UPDATE_CURRENT));
-        notRemoteView.setOnClickPendingIntent(R.id.notificationRepeat,
-                PendingIntent.getBroadcast(this, NOTIFICATION_ID, new Intent(ACTION_REPEAT),
-                        PendingIntent.FLAG_UPDATE_CURRENT));
-
-        // Starts popup player activity -- attempts to unlock lockscreen
-        final Intent intent = NavigationHelper.getPopupPlayerActivityIntent(this);
-        notRemoteView.setOnClickPendingIntent(R.id.notificationContent,
-                PendingIntent.getActivity(this, NOTIFICATION_ID, intent,
-                        PendingIntent.FLAG_UPDATE_CURRENT));
-
-        setRepeatModeRemote(notRemoteView, playerImpl.getRepeatMode());
-
-        NotificationCompat.Builder builder = new NotificationCompat
-                .Builder(this, getString(R.string.notification_channel_id))
-                .setOngoing(true)
-                .setSmallIcon(R.drawable.ic_newpipe_triangle_white)
-                .setVisibility(NotificationCompat.VISIBILITY_PUBLIC)
-                .setContent(notRemoteView);
-        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.JELLY_BEAN) {
-            builder.setPriority(NotificationCompat.PRIORITY_MAX);
-        }
-        return builder;
-    }
-
-    /**
-     * Updates the notification, and the play/pause button in it.
-     * Used for changes on the remoteView
-     *
-     * @param drawableId if != -1, sets the drawable with that id on the play/pause button
-     */
-    private void updateNotification(final int drawableId) {
-        if (DEBUG) {
-            Log.d(TAG, "updateNotification() called with: drawableId = [" + drawableId + "]");
-        }
-        if (notBuilder == null || notRemoteView == null) {
-            return;
-        }
-        if (drawableId != -1) {
-            notRemoteView.setImageViewResource(R.id.notificationPlayPause, drawableId);
-        }
-        notificationManager.notify(NOTIFICATION_ID, notBuilder.build());
-    }
-
     /*//////////////////////////////////////////////////////////////////////////
     // Misc
     //////////////////////////////////////////////////////////////////////////*/
@@ -372,9 +316,8 @@ public final class PopupVideoPlayer extends Service {
         }
 
         mBinder = null;
-        if (notificationManager != null) {
+
-            notificationManager.cancel(NOTIFICATION_ID);
+        NotificationUtil.getInstance().cancelNotification(NotificationUtil.NOTIFICATION_ID_POPUP);
-        }
 
         animateOverlayAndFinishService();
     }
@@ -461,11 +404,11 @@ public final class PopupVideoPlayer extends Service {
     }
 
     private void savePositionAndSize() {
-        SharedPreferences sharedPreferences = PreferenceManager
+        final SharedPreferences sharedPrefs = PreferenceManager
                 .getDefaultSharedPreferences(PopupVideoPlayer.this);
-        sharedPreferences.edit().putInt(POPUP_SAVED_X, popupLayoutParams.x).apply();
+        sharedPrefs.edit().putInt(POPUP_SAVED_X, popupLayoutParams.x).apply();
-        sharedPreferences.edit().putInt(POPUP_SAVED_Y, popupLayoutParams.y).apply();
+        sharedPrefs.edit().putInt(POPUP_SAVED_Y, popupLayoutParams.y).apply();
-        sharedPreferences.edit().putFloat(POPUP_SAVED_WIDTH, popupLayoutParams.width).apply();
+        sharedPrefs.edit().putFloat(POPUP_SAVED_WIDTH, popupLayoutParams.width).apply();
     }
 
     private float getMinimumVideoHeight(final float width) {
@@ -530,29 +473,6 @@ public final class PopupVideoPlayer extends Service {
         windowManager.updateViewLayout(playerImpl.getRootView(), popupLayoutParams);
     }
 
-    protected void setRepeatModeRemote(final RemoteViews remoteViews, final int repeatMode) {
-        final String methodName = "setImageResource";
-
-        if (remoteViews == null) {
-            return;
-        }
-
-        switch (repeatMode) {
-            case Player.REPEAT_MODE_OFF:
-                remoteViews.setInt(R.id.notificationRepeat, methodName,
-                        R.drawable.exo_controls_repeat_off);
-                break;
-            case Player.REPEAT_MODE_ONE:
-                remoteViews.setInt(R.id.notificationRepeat, methodName,
-                        R.drawable.exo_controls_repeat_one);
-                break;
-            case Player.REPEAT_MODE_ALL:
-                remoteViews.setInt(R.id.notificationRepeat, methodName,
-                        R.drawable.exo_controls_repeat_all);
-                break;
-        }
-    }
-
     private void updateWindowFlags(final int flags) {
         if (popupLayoutParams == null || windowManager == null || playerImpl == null) {
             return;
@@ -579,8 +499,11 @@ public final class PopupVideoPlayer extends Service {
         public void handleIntent(final Intent intent) {
             super.handleIntent(intent);
 
-            resetNotification();
+            NotificationUtil.getInstance().recreatePopupPlayerNotification(context,
-            startForeground(NOTIFICATION_ID, notBuilder.build());
+                    playerImpl.mediaSessionManager.getSessionToken(), playerImpl, sharedPreferences,
+                    true);
+            startForeground(NotificationUtil.NOTIFICATION_ID_POPUP,
+                    NotificationUtil.getInstance().notificationBuilder.build());
         }
 
         @Override
@@ -622,9 +545,7 @@ public final class PopupVideoPlayer extends Service {
 
         @Override
         public void destroy() {
-            if (notRemoteView != null) {
+            NotificationUtil.getInstance().unsetImageInOldPopupNotifications();
-                notRemoteView.setImageViewBitmap(R.id.notificationCover, null);
-            }
             super.destroy();
         }
 
@@ -683,6 +604,11 @@ public final class PopupVideoPlayer extends Service {
         @Override
         public void onShuffleClicked() {
             super.onShuffleClicked();
+            NotificationUtil.getInstance().recreatePopupPlayerNotification(context,
+                    playerImpl.mediaSessionManager.getSessionToken(), playerImpl,
+                    sharedPreferences);
+            NotificationUtil.getInstance().updatePopupPlayerNotification(-1,
+                    getBaseContext(), playerImpl, sharedPreferences);
             updatePlayback();
         }
 
@@ -697,6 +623,10 @@ public final class PopupVideoPlayer extends Service {
                                      final int bufferPercent) {
             updateProgress(currentProgress, duration, bufferPercent);
             super.onUpdateProgress(currentProgress, duration, bufferPercent);
+
+            // setMetadata only updates the metadata when any of the metadata keys are null
+            playerImpl.mediaSessionManager.setMetadata(playerImpl.getVideoTitle(),
+                    playerImpl.getUploaderName(), playerImpl.getThumbnail(), duration);
         }
 
         @Override
@@ -724,28 +654,38 @@ public final class PopupVideoPlayer extends Service {
         public void onLoadingComplete(final String imageUri, final View view,
                                       final Bitmap loadedImage) {
             super.onLoadingComplete(imageUri, view, loadedImage);
+
             if (playerImpl == null) {
                 return;
             }
-            // rebuild notification here since remote view does not release bitmaps,
+            // rebuild (old) notification here since remote view does not release bitmaps,
             // causing memory leaks
-            resetNotification();
+            NotificationUtil.getInstance().recreatePopupPlayerNotification(context,
-            updateNotification(-1);
+                    playerImpl.mediaSessionManager.getSessionToken(), playerImpl, sharedPreferences,
+                    true);
+            NotificationUtil.getInstance().updatePopupPlayerNotification(-1,
+                    getBaseContext(), playerImpl, sharedPreferences);
         }
 
         @Override
         public void onLoadingFailed(final String imageUri, final View view,
                                     final FailReason failReason) {
             super.onLoadingFailed(imageUri, view, failReason);
-            resetNotification();
+            NotificationUtil.getInstance().recreatePopupPlayerNotification(context,
-            updateNotification(-1);
+                    playerImpl.mediaSessionManager.getSessionToken(), playerImpl, sharedPreferences,
+                    true);
+            NotificationUtil.getInstance().updatePopupPlayerNotification(-1,
+                    getBaseContext(), playerImpl, sharedPreferences);
         }
 
         @Override
         public void onLoadingCancelled(final String imageUri, final View view) {
             super.onLoadingCancelled(imageUri, view);
-            resetNotification();
+            NotificationUtil.getInstance().recreatePopupPlayerNotification(context,
-            updateNotification(-1);
+                    playerImpl.mediaSessionManager.getSessionToken(), playerImpl, sharedPreferences,
+                    true);
+            NotificationUtil.getInstance().updatePopupPlayerNotification(-1,
+                    getBaseContext(), playerImpl, sharedPreferences);
         }
 
         /*//////////////////////////////////////////////////////////////////////////
@@ -799,10 +739,12 @@ public final class PopupVideoPlayer extends Service {
         @Override
         public void onRepeatModeChanged(final int i) {
             super.onRepeatModeChanged(i);
-            setRepeatModeRemote(notRemoteView, i);
             updatePlayback();
-            resetNotification();
+            NotificationUtil.getInstance().recreatePopupPlayerNotification(context,
-            updateNotification(-1);
+                    playerImpl.mediaSessionManager.getSessionToken(), playerImpl,
+                    sharedPreferences);
+            NotificationUtil.getInstance().updatePopupPlayerNotification(-1,
+                    getBaseContext(), playerImpl, sharedPreferences);
         }
 
         @Override
@@ -817,8 +759,11 @@ public final class PopupVideoPlayer extends Service {
 
         protected void onMetadataChanged(@NonNull final MediaSourceTag tag) {
             super.onMetadataChanged(tag);
-            resetNotification();
+            NotificationUtil.getInstance().recreatePopupPlayerNotification(context,
-            updateNotification(-1);
+                    playerImpl.mediaSessionManager.getSessionToken(), playerImpl,
+                    sharedPreferences);
+            NotificationUtil.getInstance().updatePopupPlayerNotification(-1,
+                    getBaseContext(), playerImpl, sharedPreferences);
             updateMetadata();
         }
 
@@ -833,18 +778,25 @@ public final class PopupVideoPlayer extends Service {
         //////////////////////////////////////////////////////////////////////////*/
 
         @Override
-        protected void setupBroadcastReceiver(final IntentFilter intentFltr) {
+
-            super.setupBroadcastReceiver(intentFltr);
+        protected void setupBroadcastReceiver(final IntentFilter intentFilter) {
+            super.setupBroadcastReceiver(intentFilter);
             if (DEBUG) {
                 Log.d(TAG, "setupBroadcastReceiver() called with: "
-                        + "intentFilter = [" + intentFltr + "]");
+                        + "intentFilter = [" + intentFilter + "]");
             }
-            intentFltr.addAction(ACTION_CLOSE);
+            intentFilter.addAction(ACTION_CLOSE);
-            intentFltr.addAction(ACTION_PLAY_PAUSE);
+            intentFilter.addAction(ACTION_PLAY_PAUSE);
-            intentFltr.addAction(ACTION_REPEAT);
+            intentFilter.addAction(ACTION_REPEAT);
+            intentFilter.addAction(ACTION_PLAY_PREVIOUS);
+            intentFilter.addAction(ACTION_PLAY_NEXT);
+            intentFilter.addAction(ACTION_FAST_REWIND);
+            intentFilter.addAction(ACTION_FAST_FORWARD);
+            intentFilter.addAction(ACTION_BUFFERING);
+            intentFilter.addAction(ACTION_SHUFFLE);
 
-            intentFltr.addAction(Intent.ACTION_SCREEN_ON);
+            intentFilter.addAction(Intent.ACTION_SCREEN_ON);
-            intentFltr.addAction(Intent.ACTION_SCREEN_OFF);
+            intentFilter.addAction(Intent.ACTION_SCREEN_OFF);
         }
 
         @Override
@@ -872,6 +824,26 @@ public final class PopupVideoPlayer extends Service {
                 case Intent.ACTION_SCREEN_OFF:
                     enableVideoRenderer(false);
                     break;
+                case ACTION_PLAY_NEXT:
+                    onPlayNext();
+                    break;
+                case ACTION_PLAY_PREVIOUS:
+                    onPlayPrevious();
+                    break;
+                case ACTION_FAST_FORWARD:
+                    isForwardPressed = true;
+                    onFastForward();
+                    break;
+                case ACTION_FAST_REWIND:
+                    isRewindPressed = true;
+                    onFastRewind();
+                    break;
+                case ACTION_BUFFERING:
+                    onBuffering();
+                    break;
+                case ACTION_SHUFFLE:
+                    onShuffleClicked();
+                    break;
             }
         }
 
@@ -888,8 +860,13 @@ public final class PopupVideoPlayer extends Service {
         @Override
         public void onBlocked() {
             super.onBlocked();
-            resetNotification();
+
-            updateNotification(R.drawable.exo_controls_play);
+            NotificationUtil.getInstance().recreatePopupPlayerNotification(context,
+                    playerImpl.mediaSessionManager.getSessionToken(), playerImpl,
+                    sharedPreferences);
+            NotificationUtil.getInstance()
+                    .updatePopupPlayerNotification(R.drawable.ic_play_arrow_white_24dp,
+                            getBaseContext(), playerImpl, sharedPreferences);
         }
 
         @Override
@@ -898,20 +875,48 @@ public final class PopupVideoPlayer extends Service {
 
             updateWindowFlags(ONGOING_PLAYBACK_WINDOW_FLAGS);
 
-            resetNotification();
+            NotificationUtil.getInstance().recreatePopupPlayerNotification(context,
-            updateNotification(R.drawable.exo_controls_pause);
+                    playerImpl.mediaSessionManager.getSessionToken(), playerImpl,
+                    sharedPreferences);
+            NotificationUtil.getInstance()
+                    .updatePopupPlayerNotification(R.drawable.ic_pause_white_24dp, getBaseContext(),
+                            playerImpl, sharedPreferences);
 
             videoPlayPause.setBackgroundResource(R.drawable.exo_controls_pause);
             hideControls(DEFAULT_CONTROLS_DURATION, DEFAULT_CONTROLS_HIDE_TIME);
 
-            startForeground(NOTIFICATION_ID, notBuilder.build());
+            startForeground(NotificationUtil.NOTIFICATION_ID_POPUP,
+                    NotificationUtil.getInstance().notificationBuilder.build());
         }
 
         @Override
         public void onBuffering() {
             super.onBuffering();
-            resetNotification();
+
-            updateNotification(R.drawable.exo_controls_play);
+            NotificationUtil.getInstance().recreatePopupPlayerNotification(context,
+                    playerImpl.mediaSessionManager.getSessionToken(), playerImpl,
+                    sharedPreferences);
+            if (NotificationUtil.getInstance().notificationSlot0.contains("buffering")
+                    || NotificationUtil.getInstance().notificationSlot1.contains("buffering")
+                    || NotificationUtil.getInstance().notificationSlot2.contains("buffering")
+                    || NotificationUtil.getInstance().notificationSlot3.contains("buffering")
+                    || NotificationUtil.getInstance().notificationSlot4.contains("buffering")) {
+                if (playerImpl.getCurrentState() == BasePlayer.STATE_PREFLIGHT
+                        || playerImpl.getCurrentState() == BasePlayer.STATE_BLOCKED
+                        || playerImpl.getCurrentState() == BasePlayer.STATE_BUFFERING) {
+                    if (!(isForwardPressed || isRewindPressed)) {
+                        if (DEBUG) {
+                            Log.d(TAG, "N_ onBuffering()");
+                        }
+                        NotificationUtil.getInstance()
+                                .updatePopupPlayerNotification(R.drawable.ic_play_arrow_white_24dp,
+                                        getBaseContext(), playerImpl, sharedPreferences);
+                    } else {
+                        isForwardPressed = false;
+                        isRewindPressed = false;
+                    }
+                }
+            }
         }
 
         @Override
@@ -920,9 +925,14 @@ public final class PopupVideoPlayer extends Service {
 
             updateWindowFlags(IDLE_WINDOW_FLAGS);
 
-            resetNotification();
+            NotificationUtil.getInstance().recreatePopupPlayerNotification(context,
-            updateNotification(R.drawable.exo_controls_play);
+                    playerImpl.mediaSessionManager.getSessionToken(), playerImpl,
-            videoPlayPause.setBackgroundResource(R.drawable.exo_controls_play);
+                    sharedPreferences);
+            NotificationUtil.getInstance()
+                    .updatePopupPlayerNotification(R.drawable.ic_play_arrow_white_24dp,
+                            getBaseContext(), playerImpl, sharedPreferences);
+
+            videoPlayPause.setBackgroundResource(R.drawable.ic_play_arrow_white_24dp);
 
             stopForeground(false);
         }
@@ -930,8 +940,13 @@ public final class PopupVideoPlayer extends Service {
         @Override
         public void onPausedSeek() {
             super.onPausedSeek();
-            resetNotification();
+
-            updateNotification(R.drawable.exo_controls_play);
+            NotificationUtil.getInstance().recreatePopupPlayerNotification(context,
+                    playerImpl.mediaSessionManager.getSessionToken(), playerImpl,
+                    sharedPreferences);
+            NotificationUtil.getInstance()
+                    .updatePopupPlayerNotification(R.drawable.ic_play_arrow_white_24dp,
+                            getBaseContext(), playerImpl, sharedPreferences);
 
             videoPlayPause.setBackgroundResource(R.drawable.exo_controls_play);
         }
@@ -942,8 +957,13 @@ public final class PopupVideoPlayer extends Service {
 
             updateWindowFlags(IDLE_WINDOW_FLAGS);
 
-            resetNotification();
+            NotificationUtil.getInstance().recreatePopupPlayerNotification(context,
-            updateNotification(R.drawable.ic_replay_white_24dp);
+                    playerImpl.mediaSessionManager.getSessionToken(), playerImpl,
+                    sharedPreferences);
+            NotificationUtil.getInstance()
+                    .updatePopupPlayerNotification(R.drawable.ic_replay_white_24dp,
+                            getBaseContext(), playerImpl, sharedPreferences);
+
             videoPlayPause.setBackgroundResource(R.drawable.ic_replay_white_24dp);
 
             stopForeground(false);
@@ -1004,7 +1024,6 @@ public final class PopupVideoPlayer extends Service {
         private float initSecPointerX = -1;
         private float initSecPointerY = -1;
 
-
         @Override
         public boolean onDoubleTap(final MotionEvent e) {
             if (DEBUG) {

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

@@ -3,17 +3,14 @@ package org.schabi.newpipe.player.helper;
 import android.content.Context;
 import android.content.Intent;
 import android.graphics.Bitmap;
-import android.media.MediaMetadata;
-import android.os.Build;
 import android.support.v4.media.MediaMetadataCompat;
 import android.support.v4.media.session.MediaSessionCompat;
+import android.support.v4.media.session.PlaybackStateCompat;
+import android.util.Log;
 import android.view.KeyEvent;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
-import androidx.annotation.RequiresApi;
-import androidx.core.app.NotificationCompat;
-import androidx.media.app.NotificationCompat.MediaStyle;
 import androidx.media.session.MediaButtonReceiver;
 
 import com.google.android.exoplayer2.Player;
@@ -30,13 +27,29 @@ public class MediaSessionManager {
     private final MediaSessionCompat mediaSession;
     @NonNull
     private final MediaSessionConnector sessionConnector;
+    @NonNull
+    private final PlaybackStateCompat.Builder playbackStateCompatBuilder;
+
+    private int tmpThumbHash;
 
     public MediaSessionManager(@NonNull final Context context,
                                @NonNull final Player player,
                                @NonNull final MediaSessionCallback callback) {
         this.mediaSession = new MediaSessionCompat(context, TAG);
+        this.mediaSession.setFlags(MediaSessionCompat.FLAG_HANDLES_MEDIA_BUTTONS
+                | MediaSessionCompat.FLAG_HANDLES_TRANSPORT_CONTROLS);
         this.mediaSession.setActive(true);
 
+        this.playbackStateCompatBuilder = new PlaybackStateCompat.Builder();
+        this.playbackStateCompatBuilder.setState(PlaybackStateCompat.STATE_NONE, -1, 1);
+        this.playbackStateCompatBuilder.setActions(PlaybackStateCompat.ACTION_SEEK_TO
+                | PlaybackStateCompat.ACTION_PLAY
+                | PlaybackStateCompat.ACTION_PAUSE // was play and pause now play/pause
+                | PlaybackStateCompat.ACTION_SKIP_TO_NEXT
+                | PlaybackStateCompat.ACTION_SKIP_TO_PREVIOUS
+                | PlaybackStateCompat.ACTION_SET_REPEAT_MODE | PlaybackStateCompat.ACTION_STOP);
+        this.mediaSession.setPlaybackState(playbackStateCompatBuilder.build());
+
         this.sessionConnector = new MediaSessionConnector(mediaSession);
         this.sessionConnector.setControlDispatcher(new PlayQueuePlaybackController(callback));
         this.sessionConnector.setQueueNavigator(new PlayQueueNavigator(mediaSession, callback));
@@ -49,37 +62,65 @@ public class MediaSessionManager {
         return MediaButtonReceiver.handleIntent(mediaSession, intent);
     }
 
-    @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
+    public MediaSessionCompat.Token getSessionToken() {
-    public void setLockScreenArt(final NotificationCompat.Builder builder,
+        return this.mediaSession.getSessionToken();
-                                 @Nullable final Bitmap thumbnailBitmap) {
+    }
-        if (thumbnailBitmap == null || !mediaSession.isActive()) {
+
+    public void setMetadata(final String title, final String artist, final Bitmap albumArt,
+                            final long duration) {
+        if (albumArt == null || !mediaSession.isActive()) {
             return;
         }
 
-        mediaSession.setMetadata(
+        if (getMetadataAlbumArt() == null) {
-                new MediaMetadataCompat.Builder()
+            Log.d(TAG, "N_getMetadataAlbumArt: thumb == null");
-                        .putBitmap(MediaMetadata.METADATA_KEY_ALBUM_ART, thumbnailBitmap)
+        }
-                        .build()
+        if (getMetadataTitle() == null) {
-        );
+            Log.d(TAG, "N_getMetadataTitle: title == null");
+        }
+        if (getMetadataArtist() == null) {
+            Log.d(TAG, "N_getMetadataArtist: artist == null");
+        }
+        if (getMetadataDuration() <= 1) {
+            Log.d(TAG, "N_getMetadataDuration: duration <= 1; " + getMetadataDuration());
+        }
 
-        MediaStyle mediaStyle = new MediaStyle()
+        if (getMetadataAlbumArt() == null || getMetadataTitle() == null
-                .setMediaSession(mediaSession.getSessionToken());
+                || getMetadataArtist() == null || getMetadataDuration() <= 1
-
+                || albumArt.hashCode() != tmpThumbHash) {
-        builder.setStyle(mediaStyle);
+            Log.d(TAG, "setMetadata: N_Metadata update: t: " + title + " a: " + artist
+                    + " thumb: " + albumArt.hashCode() + " d: " + duration);
+            mediaSession.setMetadata(
+                    new MediaMetadataCompat.Builder()
+                            .putString(MediaMetadataCompat.METADATA_KEY_TITLE, title)
+                            .putString(MediaMetadataCompat.METADATA_KEY_ARTIST, artist)
+                            .putBitmap(MediaMetadataCompat.METADATA_KEY_ALBUM_ART, albumArt)
+                            .putBitmap(MediaMetadataCompat.METADATA_KEY_DISPLAY_ICON, albumArt)
+                            .putLong(MediaMetadataCompat.METADATA_KEY_DURATION, duration)
+                            .build()
+            );
+            tmpThumbHash = albumArt.hashCode();
+        }
     }
 
-    @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
+    private Bitmap getMetadataAlbumArt() {
-    public void clearLockScreenArt(final NotificationCompat.Builder builder) {
+        return mediaSession.getController().getMetadata()
-        mediaSession.setMetadata(
+                .getBitmap(MediaMetadataCompat.METADATA_KEY_ALBUM_ART);
-                new MediaMetadataCompat.Builder()
+    }
-                        .putBitmap(MediaMetadata.METADATA_KEY_ALBUM_ART, null)
-                        .build()
-        );
 
-        MediaStyle mediaStyle = new MediaStyle()
+    private String getMetadataTitle() {
-                .setMediaSession(mediaSession.getSessionToken());
+        return mediaSession.getController().getMetadata()
+                .getString(MediaMetadataCompat.METADATA_KEY_TITLE);
+    }
 
-        builder.setStyle(mediaStyle);
+    private String getMetadataArtist() {
+        return mediaSession.getController().getMetadata()
+                .getString(MediaMetadataCompat.METADATA_KEY_ARTIST);
+    }
+
+    private long getMetadataDuration() {
+        return mediaSession.getController().getMetadata()
+                .getLong(MediaMetadataCompat.METADATA_KEY_DURATION);
     }
 
     /**

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

@@ -11,6 +11,7 @@ import androidx.annotation.Nullable;
 import androidx.preference.Preference;
 
 import org.schabi.newpipe.R;
+import org.schabi.newpipe.player.NotificationUtil;
 import org.schabi.newpipe.util.Constants;
 
 public class AppearanceSettingsFragment extends BasePreferenceFragment {
@@ -52,8 +53,22 @@ public class AppearanceSettingsFragment extends BasePreferenceFragment {
             final Preference captionSettings = findPreference(captionSettingsKey);
             getPreferenceScreen().removePreference(captionSettings);
         }
+
+        findPreference(getString(R.string.enable_old_notifications_key))
+                .setOnPreferenceChangeListener(oldNotificationsOnPreferenceChangeListener);
     }
 
+    private Preference.OnPreferenceChangeListener oldNotificationsOnPreferenceChangeListener
+            = (preference, newValue) -> {
+//        NotificationUtil.getInstance().toast(getContext(),
+//                "Killed background / popup player notification(s) !");
+        NotificationUtil.getInstance()
+                .cancelNotification(NotificationUtil.NOTIFICATION_ID_BACKGROUND);
+        NotificationUtil.getInstance().cancelNotification(NotificationUtil.NOTIFICATION_ID_POPUP);
+
+        return true;
+    };
+
     @Override
     public void onCreatePreferences(final Bundle savedInstanceState, final String rootKey) {
         addPreferencesFromResource(R.xml.appearance_settings);

app/src/main/res/values/settings_keys.xml

@@ -96,6 +96,113 @@
         <item>144p</item>
     </string-array>
 
+    <string name="enable_old_notifications_key" translatable="false">enable_old_notifications</string>
+    <string name="settings_notifications_compact_view_key" translatable="false">notifications_compact_view</string>
+    <string name="settings_notifications_compact_view_default_value" translatable="false">0,1,2</string>
+    <string name="scale_to_square_image_in_notifications_key" translatable="false">scale_to_square_image_in_notifications</string>
+
+    <string name="notification_slot_prev_key" translatable="false">prev</string>
+    <string name="notification_slot_next_key" translatable="false">next</string>
+    <string name="notification_slot_rewind_key" translatable="false">rewind</string>
+    <string name="notification_slot_forward_key" translatable="false">forward</string>
+    <string name="notification_slot_smart_rewind_prev_key" translatable="false">smart_rewind_prev</string>
+    <string name="notification_slot_smart_forward_next_key" translatable="false">smart_forward_next</string>
+    <string name="notification_slot_play_pause_buffering_key" translatable="false">play_pause_buffering</string>
+    <string name="notification_slot_play_pause_key" translatable="false">play_pause</string>
+    <string name="notification_slot_repeat_key" translatable="false">repeat</string>
+    <string name="notification_slot_shuffle_key" translatable="false">shuffle</string>
+    <string name="notification_slot_close_key" translatable="false">close</string>
+    <string name="notification_slot_n_a_key" translatable="false">n/a</string>
+
+    <string name="notification_slot_0_key" translatable="false">notification_slot_0_key</string>
+    <string name="notification_slot_0_value" translatable="false">@string/notification_slot_smart_rewind_prev_key</string>
+    <string-array name="notification_slot_0_description_list" translatable="false">
+        <item>Rewind / Previous</item>
+        <item>Previous</item>
+        <item>Rewind</item>
+    </string-array>
+    <string-array name="notification_slot_0_values_list" translatable="false">
+        <item>@string/notification_slot_smart_rewind_prev_key</item>
+        <item>@string/notification_slot_prev_key</item>
+        <item>@string/notification_slot_rewind_key</item>
+    </string-array>
+
+    <string name="notification_slot_1_key" translatable="false">notification_slot_1_key</string>
+    <string name="notification_slot_1_value" translatable="false">@string/notification_slot_play_pause_buffering_key</string>
+    <string-array name="notification_slot_1_description_list" translatable="false">
+        <item>Play / Pause / Buffering</item>
+        <item>Play / Pause</item>
+        <item>Rewind</item>
+    </string-array>
+    <string-array name="notification_slot_1_values_list" translatable="false">
+        <item>@string/notification_slot_play_pause_buffering_key</item>
+        <item>@string/notification_slot_play_pause_key</item>
+        <item>@string/notification_slot_rewind_key</item>
+    </string-array>
+
+
+    <string name="notification_slot_2_key" translatable="false">notification_slot_2_key</string>
+    <string name="notification_slot_2_value" translatable="false">@string/notification_slot_smart_forward_next_key</string>
+    <string-array name="notification_slot_2_description_list" translatable="false">
+        <item>Forward / Next</item>
+        <item>Forward</item>
+        <item>Next</item>
+        <item>Play / Pause / Buffering</item>
+        <item>Play / Pause</item>
+    </string-array>
+    <string-array name="notification_slot_2_values_list" translatable="false">
+        <item>@string/notification_slot_smart_forward_next_key</item>
+        <item>@string/notification_slot_forward_key</item>
+        <item>@string/notification_slot_next_key</item>
+        <item>@string/notification_slot_play_pause_buffering_key</item>
+        <item>@string/notification_slot_play_pause_key</item>
+    </string-array>
+
+    <string name="notification_slot_3_key" translatable="false">notification_slot_3_key</string>
+    <string name="notification_slot_3_value" translatable="false">@string/notification_slot_repeat_key</string>
+    <string-array name="notification_slot_3_description_list" translatable="false">
+        <item>Repeat</item>
+        <item>Shuffle</item>
+        <item>Previous</item>
+        <item>Forward</item>
+        <item>Forward / Next</item>
+        <item>Rewind</item>
+        <item>Rewind / Previous</item>
+        <item>Close</item>
+        <item>N/A</item>
+    </string-array>
+    <string-array name="notification_slot_3_values_list" translatable="false">
+        <item>@string/notification_slot_repeat_key</item>
+        <item>@string/notification_slot_shuffle_key</item>
+        <item>@string/notification_slot_prev_key</item>
+        <item>@string/notification_slot_forward_key</item>
+        <item>@string/notification_slot_smart_forward_next_key</item>
+        <item>@string/notification_slot_rewind_key</item>
+        <item>@string/notification_slot_smart_rewind_prev_key</item>
+        <item>@string/notification_slot_close_key</item>
+        <item>@string/notification_slot_n_a_key</item>
+    </string-array>
+
+    <string name="notification_slot_4_key" translatable="false">notification_slot_4_key</string>
+    <string name="notification_slot_4_value" translatable="false">@string/notification_slot_close_key</string>
+    <string-array name="notification_slot_4_description_list" translatable="false">
+        <item>Close</item>
+        <item>Repeat</item>
+        <item>Shuffle</item>
+        <item>Next</item>
+        <item>Forward</item>
+        <item>Forward / Next</item>
+        <item>N/A</item>
+    </string-array>
+    <string-array name="notification_slot_4_values_list" translatable="false">
+        <item>@string/notification_slot_close_key</item>
+        <item>@string/notification_slot_repeat_key</item>
+        <item>@string/notification_slot_shuffle_key</item>
+        <item>@string/notification_slot_next_key</item>
+        <item>@string/notification_slot_forward_key</item>
+        <item>@string/notification_slot_smart_forward_next_key</item>
+        <item>@string/notification_slot_n_a_key</item>
+    </string-array>
 
     <string name="video_mp4_key" translatable="false">video_mp4</string>
     <string name="video_webm_key" translatable="false">video_webm</string>

app/src/main/res/values/strings.xml

@@ -57,9 +57,18 @@
     <string name="kore_not_found">Install missing Kore app?</string>
     <string name="kore_package" translatable="false">org.xbmc.kore</string>
     <string name="show_play_with_kodi_title">Show \"Play with Kodi\" option</string>
-    <string name="enable_lock_screen_video_thumbnail_title">Lock screen video thumbnail</string>
     <string name="show_play_with_kodi_summary">Display an option to play a video via Kodi media center</string>
-    <string name="enable_lock_screen_video_thumbnail_summary">A video thumbnail is shown on the lock screen when using the background player</string>
+    <string name="enable_old_notifications_title">Enable old notifications</string>
+    <string name="enable_old_notifications_summary">This enables the old \"Custom RemoteViews\" notifications. If disabled modern MediaStyle notifications will be used.</string>
+    <string name="scale_to_square_image_in_notifications_title">Scale image to 1:1 aspect ratio</string>
+    <string name="scale_to_square_image_in_notifications_summary">This will scale the notification image from 16:9 to 1:1 aspect ratio</string>
+    <string name="default_notification_slot_0_title">Notification slot 0</string>
+    <string name="default_notification_slot_1_title">Notification slot 1</string>
+    <string name="default_notification_slot_2_title">Notification slot 2</string>
+    <string name="default_notification_slot_3_title">Notification slot 3</string>
+    <string name="default_notification_slot_4_title">Notification slot 4</string>
+    <string name="settings_notifications_compact_view_title">Notification compact view</string>
+    <string name="settings_notifications_compact_view_summary">Notification slots to show in compact view</string>
     <string name="play_audio">Audio</string>
     <string name="default_audio_format_title">Default audio format</string>
     <string name="default_video_format_title">Default video format</string>
@@ -129,6 +138,7 @@
     <string name="settings_category_other_title">Other</string>
     <string name="settings_category_debug_title">Debug</string>
     <string name="settings_category_updates_title">Updates</string>
+    <string name="settings_category_notifications_title">Notifications</string>
     <string name="background_player_playing_toast">Playing in background</string>
     <string name="popup_playing_toast">Playing in popup mode</string>
     <string name="background_player_append">Queued on background player</string>

app/src/main/res/xml/appearance_settings.xml

@@ -1,38 +1,110 @@
 <?xml version="1.0" encoding="utf-8"?>
-<PreferenceScreen
+<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     android:title="@string/settings_category_appearance_title">
 
     <ListPreference
-        app:iconSpaceReserved="false"
         android:defaultValue="@string/default_theme_value"
         android:entries="@array/theme_description_list"
         android:entryValues="@array/theme_values_list"
         android:key="@string/theme_key"
         android:summary="%s"
-        android:title="@string/theme_title"/>
+        android:title="@string/theme_title"
+        app:iconSpaceReserved="false" />
 
     <SwitchPreference
-        app:iconSpaceReserved="false"
         android:defaultValue="true"
         android:key="@string/show_hold_to_append_key"
+        android:summary="@string/show_hold_to_append_summary"
         android:title="@string/show_hold_to_append_title"
-        android:summary="@string/show_hold_to_append_summary"/>
+        app:iconSpaceReserved="false" />
 
     <ListPreference
-        app:iconSpaceReserved="false"
         android:defaultValue="@string/list_view_mode_value"
         android:entries="@array/list_view_mode_description"
         android:entryValues="@array/list_view_mode_values"
         android:key="@string/list_view_mode_key"
         android:summary="%s"
-        android:title="@string/list_view_mode"/>
+        android:title="@string/list_view_mode"
+        app:iconSpaceReserved="false" />
 
     <Preference
-        app:iconSpaceReserved="false"
         android:key="@string/caption_settings_key"
+        android:summary="@string/caption_setting_description"
         android:title="@string/caption_setting_title"
-        android:summary="@string/caption_setting_description"/>
+        app:iconSpaceReserved="false" />
+
+    <PreferenceCategory
+        android:layout="@layout/settings_category_header_layout"
+        android:title="@string/settings_category_notifications_title"
+        app:iconSpaceReserved="false">
+
+        <SwitchPreference
+            android:defaultValue="false"
+            android:key="@string/enable_old_notifications_key"
+            android:summary="@string/enable_old_notifications_summary"
+            android:title="@string/enable_old_notifications_title"
+            app:iconSpaceReserved="false" />
+
+        <SwitchPreference
+            android:defaultValue="false"
+            android:key="@string/scale_to_square_image_in_notifications_key"
+            android:summary="@string/scale_to_square_image_in_notifications_summary"
+            android:title="@string/scale_to_square_image_in_notifications_title"
+            app:iconSpaceReserved="false" />
+
+        <ListPreference
+            android:defaultValue="@string/notification_slot_0_value"
+            android:entries="@array/notification_slot_0_description_list"
+            android:entryValues="@array/notification_slot_0_values_list"
+            android:key="@string/notification_slot_0_key"
+            android:summary="%s"
+            android:title="@string/default_notification_slot_0_title"
+            app:iconSpaceReserved="false" />
+
+        <ListPreference
+            android:defaultValue="@string/notification_slot_1_value"
+            android:entries="@array/notification_slot_1_description_list"
+            android:entryValues="@array/notification_slot_1_values_list"
+            android:key="@string/notification_slot_1_key"
+            android:summary="%s"
+            android:title="@string/default_notification_slot_1_title"
+            app:iconSpaceReserved="false" />
+
+        <ListPreference
+            android:defaultValue="@string/notification_slot_2_value"
+            android:entries="@array/notification_slot_2_description_list"
+            android:entryValues="@array/notification_slot_2_values_list"
+            android:key="@string/notification_slot_2_key"
+            android:summary="%s"
+            android:title="@string/default_notification_slot_2_title"
+            app:iconSpaceReserved="false" />
+
+        <ListPreference
+            android:defaultValue="@string/notification_slot_3_value"
+            android:entries="@array/notification_slot_3_description_list"
+            android:entryValues="@array/notification_slot_3_values_list"
+            android:key="@string/notification_slot_3_key"
+            android:summary="%s"
+            android:title="@string/default_notification_slot_3_title"
+            app:iconSpaceReserved="false" />
+
+        <ListPreference
+            android:defaultValue="@string/notification_slot_4_value"
+            android:entries="@array/notification_slot_4_description_list"
+            android:entryValues="@array/notification_slot_4_values_list"
+            android:key="@string/notification_slot_4_key"
+            android:summary="%s"
+            android:title="@string/default_notification_slot_4_title"
+            app:iconSpaceReserved="false" />
+
+        <EditTextPreference
+            android:defaultValue="@string/settings_notifications_compact_view_default_value"
+            android:key="@string/settings_notifications_compact_view_key"
+            android:summary="@string/settings_notifications_compact_view_summary"
+            android:title="@string/settings_notifications_compact_view_title"
+            app:iconSpaceReserved="false" />
+
+    </PreferenceCategory>
 
 </PreferenceScreen>

app/src/main/res/xml/video_audio_settings.xml

@@ -81,13 +81,6 @@
             android:summary="@string/show_play_with_kodi_summary"
             android:title="@string/show_play_with_kodi_title"/>
 
-        <SwitchPreference
-            app:iconSpaceReserved="false"
-            android:defaultValue="true"
-            android:key="@string/enable_lock_screen_video_thumbnail_key"
-            android:summary="@string/enable_lock_screen_video_thumbnail_summary"
-            android:title="@string/enable_lock_screen_video_thumbnail_title"/>
-
     </PreferenceCategory>
 
     <PreferenceCategory