android - How to handle click in the child Views, and touch in the parent ViewGroups?

Question

In my layout I have a structure like that:

--RelativeLayout
  |
  --FrameLayout
    |
    --Button, EditText...

I want to handle touch events in the RelativeLayout and in the FrameLayout, so I set the onTouchListener in these two view groups. But only the touch in the RelativeLayout is captured.

To try solve this, I wrote my own CustomRelativeLayout, and override the onInterceptTouchEvent, now the click in the child ViewGroup (FrameLayout) is captured, but the click in the buttons and other views doesn't make any effect.

In my own custom layout, I have this:

public boolean onInterceptTouchEvent(MotionEvent ev) {
    return true;
}

Answer 1

You need to override the onInterceptTouchEvent() for each child, otherwise it will remain an onTouchEvent for the parent.

Intercept Touch Events in a ViewGroup

@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
    /*
    * This method JUST determines whether we want to intercept the motion.
    * If we return true, onTouchEvent will be called and we do the actual
    * scrolling there.
    */
...
    // In general, we don't want to intercept touch events. They should be 
    // handled by the child view.
    return false;
}

You need to return false to have the child handle it, otherwise you are returning it to the parent.