swift - Firebase 用户无法注销 - Swift

Question

1. 我在 Xcode 模拟器中运行该应用程序并使用用户名和密码登录，然后我注销，logOutOutlet 和 bookingsOutlet 被隐藏，logInOutlet 按钮显示。到目前为止，它的行为符合预期。

   • 2

接下来，从 Xcode 停止应用程序并再次运行它，但现在它的行为就像我已经登录一样:显示 logOutOutlet，bookingsOutlet，隐藏 logInOutlet。当应用程序暂停、终止或删除时，它的行为相同。 (即，在 Xcode 或 cmd + H * 2 中停止并向上滑动。)现在，假设我在下一个 ViewController 中有一个事件的登录 session ，我尝试从 FireBase 实时数据库检索数据，但我收到此错误。 错误域=com.firebase 代码=1“权限被拒绝”用户信息={NSLocalizedDescription=权限被拒绝}。为什么我不能完全注销？


@IBAction func logOut(sender: AnyObject) {
    // if the current user is logged in, try to log out and if logout is successful:
    // hide: logOut button & bookings button
    // show: logIn button
  if FIRAuth.auth() != nil {

        do {
            try FIRAuth.auth()?.signOut()

            print("the user is logged out")
        } catch let error as NSError {
            print(error.localizedDescription)
             print("the current user id is \(FIRAuth.auth()?.currentUser?.uid)")
        }

        self.logInOutlet.hidden = false
        self.logOutOutlet.hidden = true
        self.bookingsOutlet.hidden = true
    } // end of if.. FIRAuth.auth()
}

override func viewDidLoad() {
    super.viewDidLoad()

    // if the user is logged out
    // hide: logOut button & bookings button
    // show: logIn button
     // if FIRAuth.auth()?.currentUser?.uid == nil {
    if FIRAuth.auth() == nil {

        self.logInOutlet.hidden = false
        self.logOutOutlet.hidden = true
        self.bookingsOutlet.hidden = true

// it still prints the user id, why?
 if let userNOTLogged = FIRAuth.auth()?.currentUser?.uid {
            print("User should NOT be logged \(userNOTLogged)")

        }



        // if the user is logged in
        // hide: logIn Button
        // show: logOut button & bookings button
    } else if

   FIRAuth.auth() != nil {
        self.logInOutlet.hidden = true
        self.logOutOutlet.hidden = false
        self.bookingsOutlet.hidden = false
    }
}



   // Log in code


    FIRAuth.auth()?.signInWithEmail(email.text!, password: password.text!, completion: { (authData, error) in

        let customError = error?.localizedDescription
        if error != nil {
            print(customError)

            // display an alert with the error
            self.displayAlert()

        } else {
            print("The user has been logged in")


    //if signIn was successful, instantiate the view controller with identifier SWrevelViewidentifier
         let toMenuOptions = self.storyboard?.instantiateViewControllerWithIdentifier("SWrevelViewidentifier")
            self.presentViewController(toMenuOptions!, animated: true, completion: nil)

        }
    })
 }

Answer 1

我遇到了完全相同的问题。由于这种情况会在您重新启动时发生，请尝试将此代码放入您的 app.delegate 中。

FIRAuth.auth()?.addAuthStateDidChangeListener { auth, user in
  if let user = user {
    // User is signed in.
  } else {
    // No user is signed in.
  }
}