Firebase 注销在 Swift 中不起作用 [英] Firebase sign out not working in Swift

问题描述

我正在使用最新的 Firebase API (3.2.1) 并且我正在使用此代码来检查用户是否已登录:

I am using newest Firebase API (3.2.1) and I am using this code to check if user is signed in:

override func viewDidAppear(animated: Bool) {
    super.viewDidAppear(animated)

    if(self.navigationController != nil){
        self.navigationController!.setNavigationBarHidden(true, animated: true)
    }

    if(FIRAuth.auth() != nil){
        self.performSegueWithIdentifier("loginSuccessSegue", sender: self)
    }
}

换句话说，如果存在 auth 对象，我将切换到其他控制器.在那个控制器上，我有退出按钮，它是这样退出的:

In other words if auth object is present I am switching to other controller. On that controller I have sign out button which is doing sign out like this:

do{
    try FIRAuth.auth()?.signOut()
    self.performSegueWithIdentifier("logoutSegue", sender: self)
}catch{
    print("Error while signing out!")
}

我在这个操作中没有出错，但是当我切换到登录控制器时，这个 auth 对象存在并且我再次切换回带有数据的控制器.我还尝试在 auth 中检查当前用户对象，它存在且有效.

I do not get error on this operation but when I am switched to login controller, this auth object is present and I get switched back again to controller with data. I also tried checking the current user object in auth and it is present and valid.

有人知道我如何正确退出吗?

Anyone knows how an I properly do sign out?

推荐答案

2020 ...

do { try Auth.auth().signOut() }
catch { print("already logged out") }

通常，在您的基地"上屏幕，类似......

Typically, on your "base" screen, something like ...

func logoutUser() {
    // call from any screen
    
    do { try Auth.auth().signOut() }
    catch { print("already logged out") }
    
    navigationController?.popToRootViewController(animated: true)
}

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