PlaybackControls.java

mPauseButton.setOnClickListener(
       new View.OnClickListener() {
           @Override
           public void onClick(View view) {
               mPlayerAdapter.pause();
           }
       });
mPlayButton.setOnClickListener(
       new View.OnClickListener() {
           @Override
           public void onClick(View view) {
               mPlayerAdapter.play();
           }
       });
mResetButton.setOnClickListener(
       new View.OnClickListener() {
           @Override
           public void onClick(View view) {
               mPlayerAdapter.reset();
           }
       });