title: View like android's contact screen
body: <p>I am developing an application with a large number of elements that must be ordered alphabetically, and I'd like it to have the same look and feel as android's contact list, That is</p>
  
  <pre><code>[Letter]
  &lt;contact&gt;
  &lt;contact&gt;
  [Letter]
  &lt;contact&gt;
  &lt;contact&gt;
  &lt;contact&gt;
  </code></pre>
  
  <p>etc.</p>
  
  <p>Which is the best way to achieve this same layout? I've seen several tutorials concerning scrollable lists, but this is a bit different. I've looked a bit through android's source code, but if anyone has the answer, it would save me a lot of time.</p>
  
  <p>Thanks in advance.</p>