ScrollView Inside ScrollView

Question

I Know people from Google have asked us not to put Scrollable view inside another Scrollable view but is there any official statement from them directing us not to do so?

Answer 1

Atul Bhardwaj's answer above is the correct way to do it. But in case someone needs to apply it to a ScrollView where you have less control of the parent, I think this is flexible enough and just the way it's supposed to work:

private void makeMyScrollSmart() {
    myScroll.setOnTouchListener(new View.OnTouchListener() {
        @Override
        public boolean onTouch(View __v, MotionEvent __event) {
            if (__event.getAction() == MotionEvent.ACTION_DOWN) {
                //  Disallow the touch request for parent scroll on touch of child view
                requestDisallowParentInterceptTouchEvent(__v, true);
            } else if (__event.getAction() == MotionEvent.ACTION_UP || __event.getAction() == MotionEvent.ACTION_CANCEL) {
                // Re-allows parent events
                requestDisallowParentInterceptTouchEvent(__v, false);
            }
            return false;
        }
    });
}

private void requestDisallowParentInterceptTouchEvent(View __v, Boolean __disallowIntercept) {
    while (__v.getParent() != null && __v.getParent() instanceof View) {
        if (__v.getParent() instanceof ScrollView) {
            __v.getParent().requestDisallowInterceptTouchEvent(__disallowIntercept);
        }
        __v = (View) __v.getParent();
    }
}

What the function does is add a touch listener to myScroll that disables the parent's touch intercept when a touch starts in the child, and then enables it back when the touch actually ends. You don't need a reference to the parent ScrollView and it doesn't have to be the immediate parent... it'll travel the display list until it finds it.

Best of both worlds, in my opinion.