navigation controller as root view controller only displaying black screen

Question

My root view controller is a navigation controller, which leads to all my other view controllers. However, when running, it just displays a black screen and I am unable to go further in the app to all the other view controllers. The only code I have to load it is in the AppDelegate.

import UIKit

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {

var window: UINavigationController?


    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {

    return true
    }
}

Answer 1

Probably you have mistaken to declare 'var window: UIWindow?' in your AppDelegate class.

Answer 2

Probably you forget to check the box is initial view controller. Go to the navigation storyBoard and try to check it.

Answer 3

you did not have to change anything in Appdelegate.

just remove navigationController from storyboard and than select your firstViewController than do this from the option on top of the mac:=

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