title: Android: custom XML for ShareActionProvider
body: <p>I need to create a custom <code>ShareActionProvider</code> menu for my Android app, because when I specify the default one, I get only "Messaging", "Bluetooth" and "Gmail", and I only want "Facebook", "Twitter" and "Email".</p>
  
  <p>How can I do this?
  Do I need to specify my own layout for it?</p>
  
  <p>Thanks a lot in advance!</p>