Android - Create a Custom Account Type for my android app

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http://stackoverflow.com – i'm new in android programming and i'm trying to create a custom account type for my application. i followed the official guide from google's site: http://developer.android.com/training/id-auth/custom_auth.html and several others but i can't manage to get it working. can someone please guide me through this implementation? thanks to everybody (and sorry for my poor english writing) (HowTos)