正在运行的iOS模拟器显示黑屏

Question

我是尝试学习ios编程的新手。

所以，我有Xcode 11.1 我删除了故事板。

我的AppDelegate

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
    // Override point for customization after application launch.
    window = UIWindow(frame: UIScreen.main.bounds)
    window?.makeKeyAndVisible()
    window?.rootViewController = ViewController()  //UINavigationController(rootViewController: ViewController())
    return true
}

我的ViewController

class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
        view.backgroundColor = .white
    }


}

我从项目设置和Info.plist中删除了main的引用

但是，当我尝试运行该应用程序时，ios模拟器显示黑屏

如果有帮助，请尝试遵循本教程：https://www.youtube.com/watch?v=3Xv1mJvwXok&list=PL0dzCUj1L5JGKdVUtA5xds1zcyzsz7HLj