Application windows are expected to have a root view controller at the end of application launch

Question

I am using the facebook iOS SDK setup tutorial: https://developers.facebook.com/docs/mobile/ios/build/

After Step 4: Adding Log Out to your App,

I get a bla

Answer 1

Check that you have the following line in your application delegate's application:didFinishLaunchingWithOptions: method:

self.window.rootViewController = self.viewController;

Answer 2

Make sure you set your window.rootviewcontroller = your _navigationviewcontroller. Like this: (this all happens in your AppDelegate.cs file)

public partial class AppDelegate : UIApplicationDelegate { // class-level declarations UIWindow _window; UINavigationController _navigationcontroller;

    //
    // This method is invoked when the application has loaded and is ready to run. In this 
    // method you should instantiate the window, load the UI into it and then make the window
    // visible.
    //
    // You have 17 seconds to return from this method, or iOS will terminate your application.
    //

    public override bool FinishedLaunching (UIApplication app, NSDictionary options)
    {
        // create a new window instance based on the screen size
        _window = new UIWindow (UIScreen.MainScreen.Bounds);

        // If you have defined a view, add it here:
        // window.AddSubview (navigationController.View);
        _navigationcontroller = new UINavigationController();
        _navigationcontroller.PushViewController(new SplashViewController(),false);
        **_window.RootViewController = _navigationcontroller;**

        // make the window visible



    _window.MakeKeyAndVisible ();

        return true;
    }
}

}