title: How to check if users google account has been added on device before starting GCM procedure?
body: <p>Is there a way to check if user has added his google account on his device before starting the GCM registering procedure API 8?</p>
  
  <p>When try to register without it the app gives a warning stopped unexpectedly when closing, so like to check first, alert the user and close the app.</p>