ios - 来自appDelegate performSegue的Swift 3在谷歌登录后无法正常工作

Question

我正在尝试实现 Google 登录 及其与登录过程的配合，但在我的应用程序委托(delegate)文件中，我有 didSignInFor 函数，成功登录后在内部关闭，我发送用户从 loginVC 到 feedVc。

然后它转到那一行并打印下一行中的内容但不执行 Segue。
这是代码:

func sign(_ signIn: GIDSignIn!, didSignInFor user: GIDGoogleUser!, withError error: Error!) {
    print("Successfully logged into google", user)

    guard let idToken = user.authentication.idToken else {return}
    guard let accessToken = user.authentication.accessToken else {return}

    let credential = GoogleAuthProvider.credential(withIDToken: idToken, accessToken: accessToken)

    Auth.auth().signIn(with: credential) { (user, error) in
        if error != nil{
            print("ANKIT : Unable to authenticate with firebase")
        } else{
            guard let uid = user?.uid else { return }

            KeychainWrapper.standard.set(uid, forKey: KEY_UID)

            self.window?.rootViewController?.performSegue(withIdentifier: "goToFeed", sender: nil)

            print("ANKIT : Successfully authenticated with firebase for google")
        }
    }
}

谁能帮我解决这个错误？
无法弄清楚为什么 segue 不起作用..或者如果有人遇到这个问题并且他们弄清楚了请分享解决方案。任何帮助将不胜感激。

Answer 1

From the AppDelegate class you can not perform segue. So this line will never work from your AppDelegate class.

self.window?.rootViewController?.performSegue(withIdentifier: "goToFeed", sender: nil)

你需要简单

let storyboard = UIStoryboard(name: "Main", bundle: nil)
let scheduleController = storyboard.instantiateViewController(withIdentifier: "yourIdentiFier")
self.window!.rootViewController = scheduleController
self.window!.makeKeyAndVisible()

您可以从 Main.storyboard 向您的 Controller 提供标识符，请按照以下步骤操作。

打开主 Storyboard

1. 单击要打开的 View
2. 从该 Controller 顶部选择黄色/向左按钮
3. 现在打开位于右侧的实用工具箱
4. 现在点击 Show the Identical Inspector
5. 现在您可以将您的身份作为 StoryBoard Id 提供

Check this answer for more details