Make UITabBarController the root view controller - objective-c

Question

I made an empty application, then later I and added a UITabBarController in the Storyboard. Then I checked it as the initial viewcontroller and connected two NavigationControllers to represent the tabs.
But if I run the app now it says that "Application windows are expected to have a root viewcontroller at the end of application launch." and shows a white screen.
My AppDelegate looks like this:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
self.window.backgroundColor = [UIColor whiteColor];
[self.window makeKeyAndVisible];
return YES;
}
I have to add the TabBarController as the main window, but how to do this?
If TabBarController was made programmatically I would have figured it but how to when it's created in storyboard? Can I make a property for it in AppDelegate? How to hook it in storyboard in that case?

Answer 1

You can hook storyboard inside your target settings Then make sure that your UITabBarController inside of your storyboard is initial UIViewController . You can also use this code:
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:#"MainStoryboard" bundle:nil];
UIViewController *initialViewController = (UIViewController *)[storyboard instantiateViewControllerWithIdentifier:#"IdentifierOfYourViewController"];
self.window.rootViewController = initialViewController;