Подключение экзоплеера с MediaSessionCompat

Я хочу связать свою реализацию exoplayer с объектом медиа-сеанса. Я настроил SimpleExoPlayerView для показа видео. Каждый раз, когда нажимается кнопка, я хочу, чтобы обратные вызовы сеанса мультимедиа запускались. Я могу заставить обратные вызовы срабатывать только тогда, когда используется что-то вроде пары наушников. Код, используемый в приложении, написан ниже

@OnLifecycleEvent(Lifecycle.Event.ON_CREATE)
public void setUp(LifecycleOwner lifecycleOwner){
    // Create a MediaSessionCompat
    Log.i("Hoe8", "lco setup called");
    mMediaSession = new MediaSessionCompat(activity, "this");

    // Enable callbacks from MediaButtons and TransportControls
    mMediaSession.setFlags(
            MediaSessionCompat.FLAG_HANDLES_MEDIA_BUTTONS |
                    MediaSessionCompat.FLAG_HANDLES_TRANSPORT_CONTROLS);

    // Do not let MediaButtons restart the player when the app is not visible
    mMediaSession.setMediaButtonReceiver(null);

    // Set an initial PlaybackState with ACTION_PLAY, so media buttons can start the player
    mStateBuilder = new PlaybackStateCompat.Builder()
            .setActions(
                    PlaybackStateCompat.ACTION_PLAY |
                            PlaybackStateCompat.ACTION_PLAY_PAUSE);
    mMediaSession.setPlaybackState(mStateBuilder.build());

    // MySessionCallback has methods that handle callbacks from a media controller
    mMediaSession.setCallback(new MediaSessionCompat.Callback() {
        @Override
        public void onPlay() {
            super.onPlay();
            Log.i("Hoe8", "MediaSession callback play called");
            mMediaSession.setActive(true);
            ((JokesAdapter.VideoPostViewHolder) rv).setIsPlaying(true);
            ((JokesAdapter.VideoPostViewHolder) rv).setHasStarted(true);

        }

        @Override
        public void onPause() {
            super.onPause();
            ((JokesAdapter.VideoPostViewHolder) rv).setIsPlaying(false);
        }

        @Override
        public void onStop() {
            super.onStop();
            mMediaSession.setActive(false);
            ((JokesAdapter.VideoPostViewHolder) rv).setIsPlaying(false);
            ((JokesAdapter.VideoPostViewHolder) rv).setHasStarted(false);
        }
    });

    // Create a MediaControllerCompat
    MediaControllerCompat mediaController =
            new MediaControllerCompat(activity, mMediaSession);

    MediaControllerCompat.setMediaController(activity, mediaController);

    //Handler mainHandler = new Handler();
    BandwidthMeter bandwidthMeter = new DefaultBandwidthMeter();
    TrackSelection.Factory videoTrackSelectionFactory =
            new AdaptiveTrackSelection.Factory(bandwidthMeter);
    TrackSelector trackSelector =
            new DefaultTrackSelector(videoTrackSelectionFactory);




// 2. Create the player
        player = ExoPlayerFactory.newSimpleInstance(activity, trackSelector);
        playerView.setPlayer(player);

    MediaSessionConnector mediaSessionConnector =
            new MediaSessionConnector(mMediaSession);
    mediaSessionConnector.setPlayer(player, null,null );


}

Внесены некоторые изменения в код

public class VideoLifeCyclerObserver implements LifecycleObserver {

MediaSessionCompat mMediaSession;
PlaybackStateCompat.Builder mStateBuilder;
AppCompatActivity activity;
SimpleExoPlayerView playerView;
SimpleExoPlayer player;
ExoPlayer.ExoPlayerComponent rv;
MediaSessionConnector mediaSessionConnector;

public VideoLifeCyclerObserver(AppCompatActivity activity, SimpleExoPlayerView playerView, ExoPlayer.ExoPlayerComponent rv){
    this.activity = activity;
    this.playerView = playerView;
    this.activity.getLifecycle().addObserver(this);
    this.rv = rv;
    Log.i("Hoe8","video lco created");
}


@OnLifecycleEvent(Lifecycle.Event.ON_CREATE)
public void setUp(LifecycleOwner lifecycleOwner){
    // Create a MediaSessionCompat
    Log.i("Hoe8", "lco setup called");
    mMediaSession = new MediaSessionCompat(activity, "this");

    // Create a MediaControllerCompat
    MediaControllerCompat mediaController =
            new MediaControllerCompat(activity, mMediaSession);

    MediaControllerCompat.setMediaController(activity, mediaController);

    mediaSessionConnector =
            new MediaSessionConnector(mMediaSession, new PlayBackController());
}

@OnLifecycleEvent(Lifecycle.Event.ON_START)
public void startPlayer(LifecycleOwner lifecycleOwner){
    BandwidthMeter bandwidthMeter = new DefaultBandwidthMeter();
    TrackSelection.Factory videoTrackSelectionFactory =
            new AdaptiveTrackSelection.Factory(bandwidthMeter);
    TrackSelector trackSelector =
            new DefaultTrackSelector(videoTrackSelectionFactory);
    player = ExoPlayerFactory.newSimpleInstance(activity, trackSelector);
    playerView.setPlayer(player);
    mediaSessionConnector.setPlayer(player, null,null );
}

@OnLifecycleEvent(Lifecycle.Event.ON_PAUSE)
public void tearDown(LifecycleOwner lifecycleOwner){
    player.stop();
    player.release();
    player.sendMessages(new ExoPlayer.ExoPlayerMessage(rv,1,player.getContentPosition()));
}

public class PlayBackController extends DefaultPlaybackController{
    @Override
    public void onPause(Player player) {
        Log.i("Hoe8", "onPause called");
        ((JokesAdapter.VideoPostViewHolder) rv).setIsPlaying(false);
        super.onPause(player);
    }

    @Override
    public void onPlay(Player player) {
        Log.i("Hoe8", "MediaSession callback play called 2");
        mMediaSession.setActive(true);
        ((JokesAdapter.VideoPostViewHolder) rv).setIsPlaying(true);
        ((JokesAdapter.VideoPostViewHolder) rv).setHasStarted(true);
        super.onPlay(player);
    }

    @Override
    public void onStop(Player player) {
        Log.i("Hoe8", "onStop called");
        mMediaSession.setActive(false);
        ((JokesAdapter.VideoPostViewHolder) rv).setIsPlaying(false);
        ((JokesAdapter.VideoPostViewHolder) rv).setHasStarted(false);
        super.onStop(player);
    }


}
}

Как я могу заставить кнопки, которые отображаются в SimpleExoPlayerView, запускать обратные вызовы мультимедийного сеанса?