How to scroll to top of long ScrollView layout?

Question

For part of my app, the user is presented with a list of names and is asked to group them as they see fit.

(Note, the ListView code was copied verbatim from the And

Answer 1

scrollView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
    @Override
    public void onGlobalLayout() {
        // Ready, move up
        scrollView.fullScroll(View.FOCUS_UP);
    }
});

Answer 2

The main problem to all these valid solutions is that you are trying to move up the scroll when it isn't drawn on screen yet.

You need to wait until scroll view is on screen, then move it to up with any of these solutions. This is better solution than a postdelay, because you don't mind about the delay.

    // Wait until my scrollView is ready
    scrollView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
        @Override
        public void onGlobalLayout() {
            // Ready, move up
            scrollView.fullScroll(View.FOCUS_UP);
        }
    });

Answer 3

This is force scroll for scrollview :

            scrollView.post(new Runnable() {
                @Override
                public void run() {
                    scrollView.scrollTo(0, 0);
                    scrollView.pageScroll(View.FOCUS_UP);
                    scrollView.smoothScrollTo(0,0);
                }
            });

Answer 4

Very easy

    ScrollView scroll = (ScrollView) findViewById(R.id.addresses_scroll);
    scroll.setFocusableInTouchMode(true);
    scroll.setDescendantFocusability(ViewGroup.FOCUS_BEFORE_DESCENDANTS);

Answer 5

Try

mainScrollView.fullScroll(ScrollView.FOCUS_UP);

it should work.

Answer 6

runOnUiThread( new Runnable(){
   @Override
   public void run(){
      mainScrollView.fullScroll(ScrollView.FOCUS_UP);
   }
}