Assertion failure in -[UIApplication _runWithMainScene:transitionContext:completion:],

Question

I am getting the following error in iOS9 only.

Here is my code:-

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDi         


        

Answer 1

Using this row solved my issue (iOS 10):

[self.window setRootViewController:self.navigationController];

Was (worked for older iOS and Xcode):

[self.window addSubview:navigationController.view];