private void setController() {
    mController = new MusicController(getActivity());
    mController.setPrevNextListeners(
        new View.OnClickListener() {
          @Override
          public void onClick(View v) {
            playNext();
          }
        },
        new View.OnClickListener() {
          @Override
          public void onClick(View v) {
            playPrev();
          }
        });

    mController.setMediaPlayer(this);
    mController.setAnchorView(fragmentView.findViewById(R.id.song_list));
    mController.setEnabled(true);
  }
 private void setController() {
   // set the controller up
   controller = new MusicController(this);
   controller.setPrevNextListeners(
       new View.OnClickListener() {
         @Override
         public void onClick(View v) {
           playNext();
         }
       },
       new View.OnClickListener() {
         @Override
         public void onClick(View v) {
           playPrev();
         }
       });
   controller.setMediaPlayer(this);
   controller.setAnchorView(findViewById(R.id.riff_list));
   controller.setEnabled(true);
 }
 // set the controller up
 private void setController() {
   controller = new MusicController(this);
   // set previous and next button listeners
   controller.setPrevNextListeners(
       new View.OnClickListener() {
         @Override
         public void onClick(View v) {
           playNext();
         }
       },
       new View.OnClickListener() {
         @Override
         public void onClick(View v) {
           playPrev();
         }
       });
   // set and show
   controller.setMediaPlayer(this);
   controller.setAnchorView(findViewById(R.id.song_list));
   controller.setEnabled(true);
 }