private void setController() { // set the controller up musicController = new MusicController(this); musicController.setAnchorView(findViewById(R.id.rvSongList)); musicController.setMediaPlayer(this); musicController.setEnabled(true); musicController.setPrevNextListeners( new View.OnClickListener() { @Override public void onClick(View v) { playNext(); } }, new View.OnClickListener() { @Override public void onClick(View v) { playPrev(); } }); }