Android login functionality(repost)

I am looking for an android programmer who can create a login functionality exactly the same as <[login to view URL]> The user can login through facebook, twitter or several others. A global variable login = true/false and type=twitter/facebook etc should be available through the whole app. When clicking on the logout button the globals variables should be cleared. You basically use the android api's of the websites, see the examples below: [login to view URL] [login to view URL] There is a app called Janrain Quick-Sign which is in the android market and you can view it as an example. Janrain however works with a license, so you shouldn't use this.