title: TabBar black screen and no tabs
body: <p>I have this code in <strong>didFinishLaunchingWithOptions</strong>:</p>
  
  <pre><code>    window = UIWindow(frame: UIScreen.mainScreen().bounds)
      let tabBarController = UITabBarController()
  
      let listTableViewController = ListTableViewController()
      listTableViewController.tabBarItem = UITabBarItem(tabBarSystemItem: .Contacts, tag: 0)
      var navViewController = UINavigationController(rootViewController: listTableViewController)
      tabBarController.viewControllers?.append(navViewController)
  
      let galleryViewController = GalleryViewController()
      galleryViewController.tabBarItem = UITabBarItem(tabBarSystemItem: .Featured, tag: 1)
      navViewController = UINavigationController(rootViewController: galleryViewController)
      tabBarController.viewControllers?.append(navViewController)
  
      let serviceViewController = ServiceViewController()
      serviceViewController.tabBarItem = UITabBarItem(tabBarSystemItem: .More, tag: 2)
      navViewController = UINavigationController(rootViewController: serviceViewController)
      tabBarController.viewControllers?.append(navViewController)
  
      tabBarController.selectedIndex = 0
      window?.rootViewController = tabBarController
      window?.makeKeyAndVisible()
      return true
  </code></pre>
  
  <p>But when app starts and logo is gone i've got only black screen and no tabs on the tab bar, but i want to see at least the empty table view from ListTablevViewController.</p>