title: Android google map in a Fragment
body: <p>I am trying to switch fragments after login, I have MainActivity that for the first time add the LogIn Fragment to his content, after the user login, I want to switch to a Google map Fragment. </p>
  
  <p>How can I create a Google Map class extending Fragment and not FragmentActivity or Activity?</p>
  
  <p>Can I add FragmentActivity to the layout of the MainActivity? </p>