Handling Touch Events In Android When Using Multiple Views/layouts

I'm very new to Android programming, and trying to understand touch events with nested views. To start, here's a description of my app: I have a relative layout that I've added via

Solution 1:

The way touch events are handled is kind of a cascading effect that starts from the top view and goes down to the lower nested views. Basically, Android will pass the event to each view until true is returned.

The general way you could implement the onTouchEvent event of a View would be:

@Override
public boolean onTouchEvent(MotionEvent event) {
  boolean actionHandled = false;
  final int action = event.getAction();

  switch(action & MotionEventCompat.ACTION_MASK) {
    case MotionEvent.ACTION_DOWN:
      // user first touches view with pointer
      break;
    case MotionEvent.ACTION_MOVE:
      // user is still touching view and moving pointer around
      break;
    case MotionEvent.ACTION_UP:
      // user lifts pointer
      break;
  }

  // if the action was not handled by this touch, send it to other views
  if (!actionHandled) 
     actionHandled |= super.onTouch(v, MotionEvent.event);

  return actionHandled;
}