void startPresenting(Uri uri, Options options) { listeners.addPreparedListener(playOnPrepared); listeners.addStateChangedListener(updatePlayPause); listeners.addHeartbeatCallback(updateProgress); controllerView.setTogglePlayPauseAction(onTogglePlayPause); controllerView.setSeekAction(onSeekPerformed); controllerView.setToggleVolumeOnOffAction(onToggleVolume); noPlayer.attach(playerView); noPlayer.loadVideo(uri, options); }