ios - 如何直接从 Storyboard中的第一个导航 Controller 快速执行 segue？

Question

从导航 Controller 加载 Storyboard时，我需要执行转场。我在 viewDidLoad() 函数中使用 UpdatesViewController().segueToPerform("SegueIdentifier.forcedUpgrade") 但它根本不触发。

Answer 1

我不确定你使用的方法是否正确。

我如何加载我的其他 View Controller 是通过检查。例如，应用加载后，它会检查用户是否已登录，如果没有，它将推送 signin View Controller

override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.

    //forexample using firebase
    FIRAuth.auth()?.addAuthStateDidChangeListener({ (auth, user) in
        if let user = user {


        } else {

            // assign storyboard to the name of your storyboard
            let storyboard = UIStoryboard(name: "Main", bundle: nil)

            //instantiate whichever controller in the storyboard
            let signInViewController = storyboard.instantiateViewControllerWithIdentifier("SignIn")

            //present viewcontroller
            self.presentViewController(signInViewController, animated: true, completion: nil)

        }
    })



}