iOS 13 使用导航控制器从视图控制器移动到另一个故事板

Question

我有两个故事板

Main.storyboard
App.storyboard

当用户登录时，它从 loginViewController 移动到 ChatVC 我想使用 ChatVC 的嵌入式导航控制器。我写了下面的代码但在这种情况下创建了自己的新导航控制器。有什么方法可以使用 App.storyboard 的导航控制器吗？

      guard let rootVC = UIStoryboard.init(name: "App", bundle: nil).instantiateViewController
      (identifier: "MessaageVC") as? MessaageVC else {
                return
            }
            let navigationController = UINavigationController(rootViewController: rootVC)
            UIApplication.shared.windows.first?.rootViewController = navigationController
            UIApplication.shared.windows.first?.makeKeyAndVisible()

Answer 1

如果您有自定义 UINavigationController class，则应将 as? UINavigationContoller 替换为您的 class。您可以根据需要更改故事板名称。

  if let nav = UIStoryboard(name: "App", bundle: nil).instantiateViewController(withIdentifier: "yourNavigationControllerIdentifier") as? UINavigationController{
            let rootVc  = UIStoryboard(name: "App", bundle: nil).instantiateViewController(withIdentifier: "yourRootVCIdentifier")
            nav.viewControllers = [rootVc]
            UIApplication.shared.keyWindow?.rootViewController = nav
        }

Answer 2

您必须将 navigation controller 设置为 UIApplication

的 rootViewController

 guard let rootVC = UIStoryboard.init(name: "App", bundle: nil).instantiateViewController
      (identifier: "MessaageVC") as? MessaageVC else {
                return
            }
            let navigationController = UINavigationController(rootViewController: rootVC)
            UIApplication.shared.keyWindow?.rootViewController = navigationController
            UIApplication.shared.keyWindow?.makeKeyAndVisible()

iOS 13 使用导航控制器从视图控制器移动到另一个故事板

iOS 13 move from view controller to another storyboard with its navigation controller

ios

swift

swift5

ios13