getting Facebook ID of an already registered android Account

I want to get the facebook ID of an Android Account. If it's possible, would like to use the Facebook SDK to do some things like posting on the wall.

How can i get the informations from the AndroidAccounts ?

Currently i can get my Gmail address with the accoutManager.

Thanks

Solution

If you want your app to do something in the facebook of the user you need his authorization. You need to use the Facebook API because your app needs to ask for permissions from the user. Here's a link for the Facebook API: https://developers.facebook.com/docs/mobile/android/build/

If you have any further questions, feel free to ask.