Android DoubleTap Listener from codepath Android bootcamp

OnDoubleTapListener.java

/*

Usage:

  myView.setOnTouchListener(new OnDoubleTapListener(this) {
    @Override
    public void onDoubleTap(MotionEvent e) {
      Toast.makeText(MainActivity.this, "Double Tap", Toast.LENGTH_SHORT).show();
    }
  });

*/
public class OnDoubleTapListener implements OnTouchListener {
 
    private GestureDetector gestureDetector;
    
    public OnDoubleTapListener(Context c) {
      gestureDetector = new GestureDetector(c, new GestureListener());
    }
 
    public boolean onTouch(final View view, final MotionEvent motionEvent) {
        return gestureDetector.onTouchEvent(motionEvent);
    }
 
    private final class GestureListener extends SimpleOnGestureListener {
 
        @Override
        public boolean onDown(MotionEvent e) {
            return true;
        }
        
        @Override
        public boolean onDoubleTap(MotionEvent e) {
        	OnDoubleTapListener.this.onDoubleTap(e);
        	return super.onDoubleTap(e);
        }
    }
    
    public void onDoubleTap(MotionEvent e) {
    	// To be overridden when implementing listener
    }
}