Swift UIKit UINavigationController的快捷UI隐藏导航栏（rootViewController:）

我有一个快捷的视图：

struct Content View: View {
  var body: some View {
    Text("Content view")
  }
}

我使用了UIKit创建的菜单。我的视图应该是

UIViewController

或

UINavigationController

。为了显示我的快捷界面视图，我将视图设置在

UINavigationController

中：

let navigationController = UIHostingController(rootView: Content()).inNavigation()

// inNavigation()
extension UIViewController{
    func inNavigation() -> UIViewController {
        let vc = self
        let navigationController = UINavigationController(rootViewController: self)
        vc.navigationController?.navigationBar.isHidden = true
        vc.navigationController?.setNavigationBarHidden(true, animated: true)
        vc.navigationController?.isNavigationBarHidden = true
        vc.navigationController?.isToolbarHidden = true
        vc.navigationController?.setToolbarHidden(true, animated: true)
        vc.navigationController?.accessibilityFrame = .zero
        
        navigationController.navigationController?.navigationBar.isHidden = true
        navigationController.navigationController?.setNavigationBarHidden(true, animated: true)
        navigationController.navigationController?.isNavigationBarHidden = true
        navigationController.navigationController?.isToolbarHidden = true
        navigationController.navigationController?.setToolbarHidden(true, animated: true)
        navigationController.accessibilityFrame = .zero
        return navigationController
    }
}

我试图隐藏导航栏。但它仍然显示：

---

视图层次结构中应该有

UINavigationController

，这样才能生效

这里是一个有效的变体，假设您将它注入到

SceneDelegate

中的窗口中（使用Xcode 11.4/iOS 13.4进行测试）

extension UIViewController{
    func inNavigation() -> UIViewController {
        let navigationController = UINavigationController(rootViewController: self)
        DispatchQueue.main.async {
            navigationController.isNavigationBarHidden = true
        }
        return navigationController
    }
}