To create a new UIWindow over the main window

Question

In my app I want to create a new UIWindow over the main UIWindow, And I wrote as following, but it don\'t works. first, i create a UIWindow as the

Answer 1

Swift 4

To avoid memory leak, I prefer to initialise my custom window in this way, as proposed by Apple :

If you want to provide a custom window for your app, you must implement the getter method of this property and use it to create and return your custom window.

Example:

var myCustomWindow: UIWindow? = CustomWindow(frame: UIScreen.main.bounds)

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

    let mainController: MainViewController = UIStoryboard(name: "Main", bundle: nil).instantiateInitialViewController() as! MainViewController
    self.myCustomWindow?.rootViewController = mainController
    self.myCustomWindow?.makeKeyAndVisible()
}