title: How to get current viewController class name?
body: <p>but the problem is that my app has both UInavigationController and UITabBarController</p>
  
  <p>so calling navigaionController.topViewController tells me that i have UItabBarController<br>
  and </p>
  
  <p>self.window.rootViewController returns UINavigationController</p>
  
  <p>thank's a lot</p>