java - How to import facebook contacts into my app built on android platform? -

I am developing VoIP applications in Android. And I like Facebook, Twitter, LinkedIn, Google (Buzz, Orkut, Contact, Gmail) etc. I'm searching for example API. But I can see only examples for posting status in those sites and there is no instance for importing contacts from Facebook, orkut or Twitter etc. Is there an API for importing contacts with an example?

You can use official, and after this you can do something like this being certified

  Bundle parameter = new bundle (); Parameters.putString ("field", "id, name"); See the link below for the field list string response = facebook.request ("me / friends", parameters); JSONObject json = Utill.response (feedback); JSONArray Data = json.getJSONArray ("Data"); For (int i = 0, size = data. Lamp (); i & lt; size; i ++) {JSONObject friends = data. GetJSONObject (i); String id = friend.getString ("id"); String name = friend.getString ("name"); (...)}