title: List all Google contact groups in Android
body: <p>I would like to list all contact groups in a Google account, and make it possible for a user to select some of the groups as "special".  When an incoming number belongs to one of the "special" groups, I want to take actions.</p>
  
  <p>I can't find too many examples around this. Has someone done anything similar that you would like to share?</p>