Question

我跟随Rob Percival的iOS开发者课程，目前我正在坚持使用Uber克隆＆＃34;项目。以下是有问题的代码的摘录。发生错误的代码行是：

if user?.displayName == "Lehrer" {

在评论//LOG IN

之后找到

@IBAction func topTapped(_ sender: Any) {
    if emailTextField.text == "" || passwordTextField.text == "" {
        displayAlert(title: "Achtung", message: "Du musst sowohl eine Email-Adresse als auch Passwort eingeben!")
    } else {
        if let email = emailTextField.text {
            if let password = passwordTextField.text {
                if signUpMode {
                    // SIGN UP
                    Auth.auth().createUser(withEmail: email, password: password, completion: { (user, error) in
                        if error != nil {
                            self.displayAlert(title: "Error", message: error!.localizedDescription)
                        } else {

                            if self.benutzerLehrerSwitch.isOn {
                                //Lehrer
                                let req = Auth.auth().currentUser?.createProfileChangeRequest()
                                req?.displayName = "Lehrer"
                                req?.commitChanges(completion: nil)
                                self.performSegue(withIdentifier: "lehrerSegue", sender: nil)
                            } else {
                                // RIDER
                                let req = Auth.auth().currentUser?.createProfileChangeRequest()
                                req?.displayName = "Benutzer"
                                req?.commitChanges(completion: nil)
                                self.performSegue(withIdentifier: "benutzerSegue", sender: nil)
                            }
                        }
                    })
                } else {
                    // LOG IN
                    Auth.auth().signIn(withEmail: email, password: password, completion: { (user, error) in
                        if error != nil {
                            self.displayAlert(title: "Error", message: error!.localizedDescription)
                        } else {
                            if user?.displayName == "Lehrer" {
                                // BENUTZER
                                self.performSegue(withIdentifier: "benutzerSegue", sender: nil)
                            } else {
                                // LEHRER
                                self.performSegue(withIdentifier: "lehrerSegue", sender: nil)
                            }
                        }
                    })
                }
            }
        }
    }
}

基本上，我允许用户注册为两种不同类型的角色之一（＆＃34; Lehrer＆＃34;或＆＃34; Benutzer＆＃34;）并根据他们选择的那些，他们应该看到登录后不同的屏幕。我使用Firebase作为此代码的后端，如果我删除了错误的代码，注册用户的帐户就可以正常工作。有没有人有任何想法？

您可以在此屏幕截图中看到完整的外观：

Screenshot of the error

Answer 1

Google已在Firebase 5+更新后更新了这些方法试试这个

self.name = user.user. displayName

Answer 2

将user?.user.displayName代替user?.displayName

Firebase错误类型＆＃39; AuthDataResult＆＃39;没有会员＆＃39; displayName＆＃39;

2 个答案: