Android ListView scrolling to position

Question

private void setListviewSelection(final ListView list, final int pos) {
    list.post(new Runnable() {
        @Override
        public void run() {

            list.setSelection(pos);

            for (int i = 0; i < list.getChildCount(); i++)  {
                    View v = list.getChildAt(i);

                    if (i == pos && v != null)
                        v.setBackgroundColor(Color.argb(200, 51, 181, 229));
                    else if (v != null)
                        v.setBackgroundColor(Color.BLACK);
            }
        }
    });
}

Here is a code I'm using to imitate a selection in my music player. The idea is that when user press Next or Previous button an element is highlighted in the ListView, but this is not working the way I want, because setSelection doesn't scroll smoothly and basically some elements are not highlighted correctly. For better explanation, what I'm actually trying to implement is a Winamp app which has that way of scrolling when you press next/previous button (when viewing your playlist).

Using setSelectionFromTop(), smoothScrollToPosition() didn't work correctly either.

Answer 1

http://bestsiteinthemultiverse.com/2009/12/android-selected-state-listview-example/

Here is the solution which works perfectly.

Answer 2

You can only update Views from the main thread. Move your code to the Main thread.