ios - 如何加载所有 View Controller Storyboard，但跳过自然顺序并直接转到特定 View ？

Question

假设我在 Storyboard中有三个 View Controller ，我想将它们全部加载到 View Controller 堆栈中，但我想选择哪个先出现在用户面前。如下所示，我想在加载时显示第三个 View ，而不是显示第一个，有什么胶水吗？

Answer 1

选项 1。使用 Storyboard，您会看到指向 ViewController 1 的箭头。将其拖动到 View Controller 2 或 3。

选项 2。在加载您的第一个 View Controller 时，您可以 instantiate whichever view you'd like in your viewDidLoad() ，前提是您已为每个 Storyboard View 提供一个 ID。

let storyboard = UIStoryboard(name: "Main", bundle: nil)
let controller = storyboard.instantiateViewController(withIdentifier: "YourVCIdentifier")
self.present(controller, animated: true, completion: nil)

选项 3。In your AppDelegate file, you can do this.

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
    self.window = UIWindow(frame: UIScreen.main.bounds)

    let storyboard = UIStoryboard(name: "Main", bundle: nil)

    let initialViewController = storyboard.instantiateViewController(withIdentifier: "YourVCIdentifier")

    self.window?.rootViewController = initialViewController
    self.window?.makeKeyAndVisible()

    return true
}