MediaSessionCompat.Callback

public void onAddQueueItem(MediaDescriptionCompat description)

Called when a MediaControllerCompat wants to add a QueueItem with the given description at the end of the play queue.

public void onAddQueueItem(MediaDescriptionCompat description, int index)

Called when a MediaControllerCompat wants to add a QueueItem with the given description at the specified position in the play queue.

public void onCommand(String command, Bundle extras, ResultReceiver cb)

Called when a controller has sent a custom command to this session. The owner of the session may handle custom commands but is not required to.

public void onCustomAction(String action, Bundle extras)

Called when a MediaControllerCompat wants a PlaybackStateCompat.CustomAction to be performed.

public void onFastForward()

Override to handle requests to fast forward.

public boolean onMediaButtonEvent(Intent mediaButtonEvent)

Override to handle media button events.

The double tap of KEYCODE_MEDIA_PLAY_PAUSE or KEYCODE_HEADSETHOOK will call the onSkipToNext by default. If the current SDK level is 27 or higher, the default double tap handling is done by framework so this method would do nothing for it.

public void onPause()

Override to handle requests to pause playback.

public void onPlay()

Override to handle requests to begin playback.

public void onPlayFromMediaId(String mediaId, Bundle extras)

Override to handle requests to play a specific mediaId that was provided by your app.

public void onPlayFromSearch(String query, Bundle extras)

Override to handle requests to begin playback from a search query. An empty query indicates that the app may play any music. The implementation should attempt to make a smart choice about what to play.

public void onPlayFromUri(Uri uri, Bundle extras)

Override to handle requests to play a specific media item represented by a URI.

public void onPrepare()

Override to handle requests to prepare playback. Override onPlay to handle requests for starting playback.

public void onPrepareFromMediaId(String mediaId, Bundle extras)

Override to handle requests to prepare for playing a specific mediaId that was provided by your app. Override onPlayFromMediaId to handle requests for starting playback.

public void onPrepareFromSearch(String query, Bundle extras)

Override to handle requests to prepare playback from a search query. An empty query indicates that the app may prepare any music. The implementation should attempt to make a smart choice about what to play. Override onPlayFromSearch to handle requests for starting playback.

public void onPrepareFromUri(Uri uri, Bundle extras)

Override to handle requests to prepare a specific media item represented by a URI. Override onPlayFromUri to handle requests for starting playback.

public void onRemoveQueueItem(MediaDescriptionCompat description)

Called when a MediaControllerCompat wants to remove the first occurrence of the specified QueueItem with the given description in the play queue.

public void onRemoveQueueItemAt(int index)

Called when a MediaControllerCompat wants to remove a QueueItem at the specified position in the play queue.

public void onRewind()

Override to handle requests to rewind.

public void onSeekTo(long pos)

Override to handle requests to seek to a specific position in ms.

public void onSetCaptioningEnabled(boolean enabled)

Override to handle requests to enable/disable captioning.

public void onSetPlaybackSpeed(float speed)

Override to handle the playback speed change. To update the new playback speed, create a new PlaybackStateCompat by using setState, and set it with setPlaybackState.

A value of 1.0f is the default playback value, and a negative value indicates reverse playback. The speed will not be equal to zero.

public void onSetRating(RatingCompat rating)

Override to handle the item being rated.

public void onSetRating(RatingCompat rating, Bundle extras)

Override to handle the item being rated.

public void onSetRepeatMode(int repeatMode)

Override to handle the setting of the repeat mode.

You should call setRepeatMode before end of this method in order to notify the change to the MediaControllerCompat, or getRepeatMode could return an invalid value.

public void onSetShuffleMode(int shuffleMode)

Override to handle the setting of the shuffle mode.

You should call setShuffleMode before the end of this method in order to notify the change to the MediaControllerCompat, or getShuffleMode could return an invalid value.

public void onSkipToNext()

Override to handle requests to skip to the next media item.

public void onSkipToPrevious()

Override to handle requests to skip to the previous media item.

public void onSkipToQueueItem(long id)

Override to handle requests to play an item with a given id from the play queue.

public void onStop()

Override to handle requests to stop playback.