title: How can I make a single header stick to the top of the screen when scrolling a listview?
body: <p>I have got a list view and i am inflating two headers. header1 and bellow it header2 then below that, the list items.</p>
  
  <p>The listview's high is match_parent</p>
  
  <p>How can I make it so that when I scroll my list, header2 does not disappear from the screen. so that the highest it goes is the top of the screen while the list items scroll underneath it</p>