code: private void setViewsVisibility() {
  
  		if (mSeekBar != null) {
  			mSeekBar.setVisibility(View.VISIBLE);
  		}
  
  		if (mPlaybackTime != null) {
  			mPlaybackTime.setVisibility(View.VISIBLE);
  		}
  
  		if (mRunTime != null) {
  			mRunTime.setVisibility(View.VISIBLE);
  		}
  
  		if (mTotalTime != null) {
  			mTotalTime.setVisibility(View.VISIBLE);
  		}
  
  		if (mPlayButton != null) {
  			mPlayButton.setVisibility(View.VISIBLE);
  		}
  
  		if (mPauseButton != null) {
  			mPauseButton.setVisibility(View.VISIBLE);
  		}
  	}
docs: Ensure the views are visible before playing the audio.