是否可以在显示的屏幕层次结构中的特定元素处显示UIViewController,以符合Google Admob策略?

我有一些使用谷歌Admob的自由职业者项目。现在,项目经理告诉我,这些项目不符合谷歌Admob的政策,显然谷歌暂时停止了为特定项目提供广告。

以下是Google Admob想要的理想流程(参考: https://support.google.com/admob/answer/6201362?hl=en&ref_topic=2745287 ):

据我所知,这种实现在iOS中是不可能的。目前项目所做的是在取消中间ad(通过Admob Framework的委派功能, interstitialDidDismissScreen 或 interstitialWillDismissScreen ),然后才会显示下一个屏幕。简言之,在取消了模式呈现的中间广告后,下一个屏幕将被完美呈现!

我曾多次尝试这样做,当然,正如我们都知道的那样,结果是:

警告:试图显示其视图不在窗口层次结构中的对象!

所以我的问题是,有没有一种方法可以在显示的屏幕后面显示屏幕?

我尝试了其他一些方法,如删除动画,但仍然可以看到上一个屏幕。对于那些想尝试的人来说,这是一个简单的项目:

AppDelegate。敏捷的

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

    let vc1 = ViewController()
    let vc1navcon = UINavigationController(rootViewController: vc1)
    self.window = UIWindow(frame: UIScreen.main.bounds)
    self.window?.rootViewController = vc1navcon
    self.window?.makeKeyAndVisible()

    return true
}

多个EVC。敏捷的

import UIKit

class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()

        self.view.backgroundColor = .red

        let barButton = UIBarButtonItem(title: "VC3", style: .plain, target: self, action: #selector(self.presentVc3))
        self.navigationItem.leftBarButtonItem = barButton

    }

    @objc func presentVc3() {
        let vc3navcon = UINavigationController(rootViewController: ViewController3())
        self.present(vc3navcon, animated: true, completion: nil)
    }
}

class ViewController2: UIViewController {
    override func viewDidLoad() {
        super.viewDidLoad()

        self.view.backgroundColor = .green

    }
}

class ViewController3: UIViewController {
    override func viewDidLoad() {
        super.viewDidLoad()

        self.view.backgroundColor = .blue

        let barButton = UIBarButtonItem(title: "AddVC2", style: .plain, target: self, action: #selector(self.addVc2))
        self.navigationItem.leftBarButtonItem = barButton

        let barButton2 = UIBarButtonItem(title: "dismiss", style: .plain, target: self, action: #selector(self.dismissVc3))
        self.navigationItem.rightBarButtonItem = barButton2
    }

    @objc func dismissVc3() {
        self.dismiss(animated: true, completion: {

        })
    }

    @objc func addVc2() {
        let vc2 = ViewController2()
        let vc2navcon = UINavigationController(rootViewController: vc2)

        var viewControllers = UIApplication.shared.keyWindow?.rootViewController?.childViewControllers
        viewControllers?.append(vc2navcon)

    }
}