title: Refresh Navigation Drawer after Login
body: <p>I have an App. After app launch, show the home screen. I am using Navigation Drawer. There is Login menu item in drawer. If they want to do same activities, user need to login.</p>
  
  <p>Example, user choose login, show the login activity. After login, back to home page. Then reopen the drawer, I want to change the login to logout. May I know where do I refresh the drawer?</p>