title: How to make a Android contact alike listView?
body: <p><img src="https://i.stack.imgur.com/ya8cG.jpg" alt="enter image description here"></p>
  
  <p>Hi, I have to make a listview like this image.</p>
  
  <p>These letter A,B are auto scrolled by the listview.
  The Letter A is appear until there is no Item start with A in the list view.</p>
  
  <p>I dont have any problem with the list view in the right. My difficulty is showing letter abc along with the listview.</p>
  
  <p>Can anyone help me about this?
  Thanks.</p>