title: Android - Creating listview with floating headers
body: <p>Targeting 2.3 - 4.2 I would like to implement the following effect (see image), basically a group list where next item header pushes the last one.</p>
  
  <p>What would be the best approach?</p>
  
  <p><img src="https://i.stack.imgur.com/caGTK.gif" alt="enter image description here"></p>