ios - 如何显示特定的 VC ，更像是导航到一堆 VC

Question

所以我在我的应用程序中实现了通用链接，当按下按钮时，我打开了我的第二个应用程序:

UIApplication.shared.open(aUrl!)

我也接到了电话:

func application(_ application: UIApplication, continue userActivity: NSUserActivity, restorationHandler: @escaping ([Any]?) -> Void) -> Bool {}

这是一个警报。

问题就像标题说的那样..我如何导航到特定的 VC，(从 FirstApp 到我用通用链接打开它的 Second)，更像是映射 navigation controller stack 。

我写过类似的东西:

        if let controller = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "MyAdsController") as? MyAdsViewController {
        if let window = self.window, let rootViewController = window.rootViewController {
            var currentController = rootViewController
            while let presentedController = currentController.presentedViewController {
                currentController = presentedController
            }
            currentController.present(controller, animated: true, completion: nil)
        }
    }

但这是一个丑陋的表示，我需要像洞导航堆栈这样的东西......

另外，如果我想用通用链接处理更多，我可以为此创建一个辅助类吗？任何建议表示赞赏。

Answer 1

您需要使用 UINavigationController 的 .viewControllers 属性，您可以使用 setViewControllers(_:animated:) 方法或修改直接 .viewControllers 属性，其中 rootViewController 将是 viewControllersArray[0] 而 topViewController 将是 viewControllersArray[ count-1]

此属性描述和详细信息可以在 UINavigationController 文档中找到

viewControllers

Property

The view controllers currently on the navigation stack.

声明SWIFT

var viewControllers: [UIViewController]

Discussion The root view controller is at index 0 in the array, the back view controller is at index n-2, and the top controller is at index n-1, where n is the number of items in the array.

Assigning a new array of view controllers to this property is equivalent to calling the setViewControllers:animated: method with the animated parameter set to false.

示例

    let storyboard = UIStoryboard(name: "Main", bundle: Bundle.main)
    let firstViewController = storyboard.instantiateViewController(withIdentifier: "FirstViewController") as? FirstViewController
    let secondViewController = storyboard.instantiateViewController(withIdentifier: "SecondViewController") as? SecondViewController
    let thirdViewController = storyboard.instantiateViewController(withIdentifier: "ThirdViewController") as? ThirdViewController

    self.navigationController?.setViewControllers([firstViewController,secondViewController,thirdViewController], animated: false)