Example_of_cancelChildrenTouchEvent.java

private void cancelChildrenTouchEvent(MotionEvent event) {
    // MotionEvent.obtain creates a new MotionEvent`, copying from an existing one.
    final MotionEvent canceledEvent = MotionEvent.obtain(event);

    // The event was handled by the certain child view. In order to make the touch event
    // lifecycle complete, we have to fake a ACTION_CANCEL for the child view.
    // Otherwise, it would be chaos.
    canceledEvent.setAction(MotionEvent.ACTION_CANCEL);
    super.dispatchTouchEvent(canceledEvent);
    canceledEvent.recycle();

    // Fake our touch event for the same reason.
    event.setAction(MotionEvent.ACTION_DOWN);
}