Creating a navigationController programmatically (Swift)

Question

I\'ve been trying to redo the work on my app programmatically. (Without the use of storyboards)

I\'m almost done, except making the navigation controller manually.

Answer 1

Value of type 'AppDelegate' has no member 'window'

For those building newer projects with SceneDelegate.swift, you can use the 'var window: UIWindow?' in SceneDelegate instead of the removed 'var window' in AppDelegate

func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
    guard let windowScene = (scene as? UIWindowScene) else { return }

    window?.windowScene = windowScene
    window?.makeKeyAndVisible()

    let viewController = ViewController()
    let navViewController = UINavigationController(rootViewController: viewController)
    window?.rootViewController = navViewController
}