Swift 使用BlackBerry Dynamics SDK时如何访问rootViewController

我正在删除一个带有多个视图控制器的iOS 13应用程序（使用故事板，不带导航控制器，不带启动屏幕）。 对于取消/显示视图控制器，我使用以下代码：

@objc func onMenuItemUploadsTap(_ sender: UIView) {
    self.view.window!.rootViewController?.dismiss(animated: false, completion: {
        let appDelegate = UIApplication.shared.delegate as! AppDelegate
        let vc = appDelegate.getViewController(viewController: .Uploads)
        vc.modalPresentationStyle = .fullScreen
        UIApplication.shared.windows.first!.rootViewController!.present(vc, animated: true, completion: nil)
    })
}

实例化viewController后，我将它们保存在AppDelegate中，因为用户可以从viewController跳到viewController 因此，viewController必须保持其状态/值，这就是为什么我使用：

let vc = appDelegate.getViewController(viewController: .Uploads)

好的。。。当我在发布模式下运行应用程序时，只会显示初始的viewController（名为：HomeController），而不是我想显示的“vc”，调试控制台会告诉我：

Attempt to present <XXX.UploadController: 0x7ffc71152400> on <UIViewController: 0x7ffc70714c40> whose view is not in the window hierarchy!

我的问题: 使用BlackBerry SDK时如何访问rootViewController

我正在使用： macOS Mojave 10.14.6，xCode 11.1（11A1027），BlackBerry_Dynamics_SDK_for_iOS_v6.1.0.170

提前谢谢

我试过：

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
       
    // Override point for customization after application launch.
    let controller = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "HomeController") as? HomeController
    window = UIWindow()
    window?.makeKeyAndVisible()
    window?.rootViewController = controller

#if !DEBUG
    XXXGDiOSDelegate.sharedInstance.appDelegate = self
    GDiOS.sharedInstance().authorize(XXXGDiOSDelegate.sharedInstance)
#endif
    return true
}

及

---

我的解决方案。。。我遵循以下说明（目标c）：

（参见此处：实例化应用程序用户界面）

…并在我的AppDelegate中实现了这一点：

成员变量：

var run_once: Bool = false

修改后的授权：

func didAuthorize() -> Void {

    print(#file, #function)

    //I added this if block:
    if !self.run_once {
        self.run_once = true
        let controller = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "HomeController") as? HomeController
        window = UIWindow()
        window?.makeKeyAndVisible()
        window?.rootViewController = controller
        UIApplication.shared.windows.first!.rootViewController = controller
    }
}

现在，该应用程序在发布模式下也可以正常运行

var run_once: Bool = false

func didAuthorize() -> Void {

    print(#file, #function)

    //I added this if block:
    if !self.run_once {
        self.run_once = true
        let controller = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "HomeController") as? HomeController
        window = UIWindow()
        window?.makeKeyAndVisible()
        window?.rootViewController = controller
        UIApplication.shared.windows.first!.rootViewController = controller
    }
}