In this Gooogle IO 11 presentation – http://code.google.com/p/google-api-java-client/wiki/Android speaker has mentioned that new google-api-java-client could be used to any rest json api.
Is it possible to use this library to authorize and use facebook graph api on Android?
Somebody make a sample for foursquare http://blog.doityourselfandroid.com/2011/09/05/integrate-foursquare-android-application/