Media Session Compat not showing Lockscreen controls on Pre-Lollipop

Question

I'm using MediaSessionCompat from AppCompat Support Library Revision 22. And on Lollipop I'm getting notification & also the background of lockscreen is the album art. And everything works cool.

While on Pre-Lollipop devices, the music controls on lockscreen are not at all shown. It's weird & I tried everything but it doesn't show up, not even the background changes.

I hope someone has solution to this issue.

Note: RemoteControlClient used to work on Lollipop & KitKat

/**  * Initializes the remote control client  */ private void setupMediaSession() {     /* Activate Audio Manager */     mAudioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);     mAudioManager.requestAudioFocus(mAudioFocusListener, AudioManager.STREAM_MUSIC,             AudioManager.AUDIOFOCUS_GAIN);      ComponentName mRemoteControlResponder = new ComponentName(getPackageName(),             MediaButtonReceiver.class.getName());     final Intent mediaButtonIntent = new Intent(Intent.ACTION_MEDIA_BUTTON);     mediaButtonIntent.setComponent(mRemoteControlResponder);     mMediaSessionCompat = new MediaSessionCompat(getApplication(), "JairSession", mRemoteControlResponder, null);     mMediaSessionCompat.setFlags(MediaSessionCompat.FLAG_HANDLES_MEDIA_BUTTONS | MediaSessionCompat.FLAG_HANDLES_TRANSPORT_CONTROLS);     PlaybackStateCompat playbackStateCompat = new PlaybackStateCompat.Builder()             .setActions(                     PlaybackStateCompat.ACTION_SEEK_TO |                     PlaybackStateCompat.ACTION_SKIP_TO_PREVIOUS |                     PlaybackStateCompat.ACTION_SKIP_TO_NEXT |                     PlaybackStateCompat.ACTION_PLAY |                     PlaybackStateCompat.ACTION_PAUSE |                     PlaybackStateCompat.ACTION_STOP             )             .setState(                     isPlaying() ? PlaybackStateCompat.STATE_PLAYING : PlaybackStateCompat.STATE_PAUSED,                     getCurrentPosition(),                     1.0f)             .build();     mMediaSessionCompat.setPlaybackState(playbackStateCompat);     mMediaSessionCompat.setCallback(mMediaSessionCallback);     mMediaSessionCompat.setSessionActivity(retrievePlaybackActions(5));     mMediaSessionCompat.setActive(true);     updateMediaSessionMetaData();     mTransportController = mMediaSessionCompat.getController().getTransportControls(); 

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Here's the updateMediaSessionMetaData() :

/**  * Updates the lockscreen controls, if enabled.  */ private void updateMediaSessionMetaData() {             MediaMetadataCompat.Builder builder = new MediaMetadataCompat.Builder();             builder.putString(MediaMetadataCompat.METADATA_KEY_ARTIST, getArtistName());             builder.putString(MediaMetadataCompat.METADATA_KEY_ALBUM, getAlbumName());             builder.putString(MediaMetadataCompat.METADATA_KEY_TITLE, getTrackName());             builder.putLong(MediaMetadataCompat.METADATA_KEY_DURATION, getDuration());             builder.putBitmap(MediaMetadataCompat.METADATA_KEY_ALBUM_ART, MusicUtils.getArtwork(this, getAlbumID(), true));             mMediaSessionCompat.setMetadata(builder.build()); 

}

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The Media Session Callback methods

private final MediaSessionCompat.Callback mMediaSessionCallback = new MediaSessionCompat.Callback() {      @Override     public boolean onMediaButtonEvent(Intent mediaButtonEvent) {         final String intentAction = mediaButtonEvent.getAction();         if (AudioManager.ACTION_AUDIO_BECOMING_NOISY.equals(intentAction)) {             if (PrefUtils.isHeadsetPause(getBaseContext())) {                 Log.d(LOG_TAG, "Headset disconnected");                 pause();             }         } else if (Intent.ACTION_MEDIA_BUTTON.equals(intentAction)) {             final KeyEvent event = mediaButtonEvent.getParcelableExtra(Intent.EXTRA_KEY_EVENT);             if (event == null) return super.onMediaButtonEvent(mediaButtonEvent);             final int keycode = event.getKeyCode();             final int action = event.getAction();             final long eventTime = event.getEventTime();             if (event.getRepeatCount() == 0 && action == KeyEvent.ACTION_DOWN) {                 switch (keycode) {                     case KeyEvent.KEYCODE_HEADSETHOOK:                         if (eventTime - mLastClickTime < DOUBLE_CLICK) {                             playNext(mSongNumber);                             mLastClickTime = 0;                         } else {                             if (isPlaying())                                 pause();                             else resume();                             mLastClickTime = eventTime;                         }                         break;                     case KeyEvent.KEYCODE_MEDIA_STOP:                         mTransportController.stop();                         break;                     case KeyEvent.KEYCODE_MEDIA_PLAY_PAUSE:                         if (isMediaPlayerActive()) {                             if (isPlaying()) mTransportController.pause();                             else mTransportController.play();                         }                         break;                     case KeyEvent.KEYCODE_MEDIA_NEXT:                         mTransportController.skipToNext();                         break;                     case KeyEvent.KEYCODE_MEDIA_PREVIOUS:                         mTransportController.skipToPrevious();                         break;                     case KeyEvent.KEYCODE_MEDIA_PAUSE:                         mTransportController.pause();                         break;                     case KeyEvent.KEYCODE_MEDIA_PLAY:                         mTransportController.play();                         break;                 }             }         }         return super.onMediaButtonEvent(mediaButtonEvent);     }      @Override     public void onPlay() {         super.onPlay();         resume();     }      @Override     public void onPause() {         super.onPause();         pause();     }      @Override     public void onSkipToNext() {         super.onSkipToNext();         playNext(mSongNumber);     }      @Override     public void onSkipToPrevious() {         super.onSkipToPrevious();         playPrevious(mSongNumber);     }      @Override     public void onSeekTo(long pos) {         super.onSeekTo(pos);         seekTo(pos);     }      @Override     public void onStop() {         super.onStop();         pause();         commitMusicData();         updatePlayingUI(STOP_ACTION);         stopSelf();     } }; 

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Media Button Receiver Manifest Entry

<!-- Media button receiver -->     <receiver android:name=".receiver.MediaButtonReceiver" >         <intent-filter>             <action android:name="android.intent.action.MEDIA_BUTTON" />             <action android:name="android.media.AUDIO_BECOMING_NOISY" />         </intent-filter>     </receiver> 

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I'm trying since couple of weeks to solve this issue with no success, and in desperate need of help.

Edit: A tutorial or example of MediaSessionCompat would also be fine

Answer 1

While not strictly required for MediaSession, RemoteControlClient used on API14-19 devices, does require audio focus and it is 100% strongly recommended for all media playback.

Adding lines such as:

AudioManager audioManager = (AudioManager)     getSystemService(Context.AUDIO_SERVICE); int result = audioManager.requestAudioFocus(this,     AudioManager.STREAM_MUSIC, AudioManager.AUDIOFOCUS_GAIN); if (result != AudioManager.AUDIOFOCUS_GAIN) {     return; //Failed to gain audio focus } 

Before playing any media should gain audio focus and show controls.