MediaSession.Callback

Callback

public Callback ()

onCommand

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

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

onCustomAction

public void onCustomAction (String action, 
                Bundle extras)

Called when a MediaController wants a PlaybackState.CustomAction to be performed.

onFastForward

public void onFastForward ()

Override to handle requests to fast forward.

onMediaButtonEvent

public boolean onMediaButtonEvent (Intent mediaButtonIntent)

Called when a media button is pressed and this session has the highest priority or a controller sends a media button event to the session. The default behavior will call the relevant method if the action for it was set.

The intent will be of type Intent#ACTION_MEDIA_BUTTON with a KeyEvent in Intent#EXTRA_KEY_EVENT

onPause

public void onPause ()

Override to handle requests to pause playback.

onPlay

public void onPlay ()

Override to handle requests to begin playback.

onPlayFromMediaId

public void onPlayFromMediaId (String mediaId, 
                Bundle extras)

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

onPlayFromSearch

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.

onPlayFromUri

public void onPlayFromUri (Uri uri, 
                Bundle extras)

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

onPrepare

public void onPrepare ()

Override to handle requests to prepare playback. During the preparation, a session should not hold audio focus in order to allow other sessions play seamlessly. The state of playback should be updated to PlaybackState#STATE_PAUSED after the preparation is done.

onPrepareFromMediaId

public void onPrepareFromMediaId (String mediaId, 
                Bundle extras)

Override to handle requests to prepare for playing a specific mediaId that was provided by your app's MediaBrowserService. During the preparation, a session should not hold audio focus in order to allow other sessions play seamlessly. The state of playback should be updated to PlaybackState#STATE_PAUSED after the preparation is done. The playback of the prepared content should start in the implementation of onPlay(). Override onPlayFromMediaId(String, Bundle) to handle requests for starting playback without preparation.

onPrepareFromSearch

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. During the preparation, a session should not hold audio focus in order to allow other sessions play seamlessly. The state of playback should be updated to PlaybackState#STATE_PAUSED after the preparation is done. The playback of the prepared content should start in the implementation of onPlay(). Override onPlayFromSearch(String, Bundle) to handle requests for starting playback without preparation.

onPrepareFromUri

public void onPrepareFromUri (Uri uri, 
                Bundle extras)

Override to handle requests to prepare a specific media item represented by a URI. During the preparation, a session should not hold audio focus in order to allow other sessions play seamlessly. The state of playback should be updated to PlaybackState#STATE_PAUSED after the preparation is done. The playback of the prepared content should start in the implementation of onPlay(). Override onPlayFromUri(Uri, Bundle) to handle requests for starting playback without preparation.

onRewind

public void onRewind ()

Override to handle requests to rewind.

onSeekTo

public void onSeekTo (long pos)

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

onSetPlaybackSpeed

public void onSetPlaybackSpeed (float speed)

Override to handle the playback speed change. To update the new playback speed, create a new PlaybackState by using PlaybackState.Builder.setState(int, long, float), and set it with MediaSession.setPlaybackState(android.media.session.PlaybackState).

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.

onSetRating

public void onSetRating (Rating rating)

Override to handle the item being rated.

onSkipToNext

public void onSkipToNext ()

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

onSkipToPrevious

public void onSkipToPrevious ()

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

onSkipToQueueItem

public void onSkipToQueueItem (long id)

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

onStop

public void onStop ()

Override to handle requests to stop playback.