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

I had to remove this line from application didFinishLaunchingWithOptions:

self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];

And that fixed it for me.

Answer 2

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];

Answer 3

here i got the solution by checking if navigationController is nil or not:-

if (self.navigationController== nil)
{
    self.navigationController = [[BufferedNavigationController alloc] initWithRootViewController:self.firstViewController];
}
else
{
    [self.navigationController setViewControllers:@[self.firstViewController] animated:NO];
}