Access the window object from SceneDelegate or AppDelegate

getCurrentWindow

    func getCurrentWindow() -> UIWindow? {
        if #available(iOS 13.0, *) {
            if let windowScene = UIApplication.shared.connectedScenes.first as? UIWindowScene,
                let sceneDelegate = windowScene.delegate as? SceneDelegate {
                return sceneDelegate.window
            } else {
                return nil
            }
        } else {
            // Fallback on earlier versions
            return self.window
        }
    }