title: Stop user being asked to log in twice for facebook
body: <p>I'm using the facebook api with my android app to log a user into facebook, get some details and post a status. Then sometimes I also need to open a facebook link in the users web browser.</p>
  
  <p>It works ok but after i have logged the user in on my app, when i open the facebook page it asks the user to log in again. Is there any way i can stop it from asking for username and password again and just have it login with the session i already have for my app?</p>