title: Associate facebook API with Android
body: <p>I'm having trouble to work with facebook API within my android app.</p>
  
  <p>I have a login button on my app. And I wish that the user clicks the login button and associate with a facebook account. However, I'd like to do it without the facebook predefined design. </p>
  
  <p>I'm having a big trouble understanding the facebook API, I would love some help.</p>
  
  <p>All documentation I find on the net is not that clear to me.
  Thank you very much.</p>