question: protected boolean handleRemoteAction ( String action , Bundle extras ) { if ( action == null || action . isEmpty ( ) ) { return false ; } switch ( action ) { case RemoteActions . ACTION_PLAY_PAUSE : performPlayPause ( ) ; break ; case RemoteActions . ACTION_NEXT : performNext ( ) ; break ; case RemoteActions . ACTION_PREVIOUS : performPrevious ( ) ; break ; case RemoteActions . ACTION_REPEAT : performRepeat ( ) ; break ; case RemoteActions . ACTION_SHUFFLE : performShuffle ( ) ; break ; case RemoteActions . ACTION_STOP : performStop ( ) ; break ; case RemoteActions . ACTION_SEEK_STARTED : performSeekStarted ( ) ; break ; case RemoteActions . ACTION_SEEK_ENDED : performSeekEnded ( extras . getLong ( RemoteActions . ACTION_EXTRA_SEEK_POSITION , 0 ) ) ; break ; case RemoteActions . ACTION_ALLOWED_TYPE_CHANGED : updateAllowedMediaType ( extras . getInt ( RemoteActions . ACTION_EXTRA_ALLOWED_TYPE ) ) ; break ; default : return false ; } return true ; }
target:  Handles the remote actions from the big notification and media controls to control the media playback