title: Accessibility reading showing items in a listview as list item + header view
body: <p>I am implementing accessibility in my custom pull to refresh list view. My pull to refresh list view has a header view to show the updating status while pull down. If my list contains only 5 items, Talkback reads it as "showing item 1 of 6" instead of "showing item 1 of 5". I think it took total count as list items + header views (ie, 5 items + 1 header view).</p>
  
  <p>I want to remove the header view count from this.</p>
  
  <p>I have tried <code>headerView.setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS);</code> but it doesn't work for me.</p>