Question

我是Swift的新手，我正在使用Firebase制作一个非常简单的登录页面。我有以下代码：

 guard fullNameTextField.text != "", emailTextField.text != "", passwordTextField.text != "", confirmPasswordTextField.text != ""
        else {
            return
    }

    }

if passwordTextField.text == confirmPasswordTextField.text {
//MARK: Firebase autenthication
FIRAuth.auth()?.createUser(withEmail: emailTextField.text!, password: passwordTextField.text!, completion:{
(user,error)in

if let error = error {
print(error.localizedDescription)
}

并且Xcode表示存在期望的声明错误。如果有人可以帮助我，我会很感激，因为我想我已经尽了一切。

Answer 1

我认为您需要更新到最新版本

Auth.auth().createUser(withEmail: email, password: password) { (authResult, error) in
  // ...
  guard let user = authResult?.user else { return }
}

在这里Docs

Answer 2

您应避免强行打开包装。您的代码应如下所示：

guard let name = fullNameTextField.text, name.count > 0 else { return } 
guard let email = emailTextField.text, email.count > 0 else { return }
guard let password = passwordTextField.text, password.count > 0 else { return }
guard let confirmPassword = confirmPasswordTextField.text, confirmPassword.count > 0 else { return }

if password == confirmPassword {
    Auth.auth().createUser(withEmail: email, password: password, completion: { (result, error) in
        if let error = error {
            print("Failed to create new user", error)
            return
        }

        print("Successfully created user:", result?.user.uid ?? "")

        })
}

Swift在使用Firebase时显示预期的声明错误

2 个答案: