title: FacebookSDK Android 3.5.2 GraphApiSample: An active access token must be used to query information about the current user
body: <p>I just download Android FacebookSDK 3.5.2 zip. And try to run GraphApiSample. 
  I got the correct info when I request "/me".</p>
  
  <p>But when I request "/me/friends?fields=name" I got the error:An active access token must be used to query information about the current user.</p>
  
  <p>I check the active session permissions: there are 'user_friends' and 'basic_info'.</p>
  
  <p>Anyone could help me?</p>
  
  <p>Penny
  Tipcat Interactive.</p>