更新了重新验证用户的方法

Question

我一直在寻找Firebase Documentation，并找到了重新验证下面显示的用户的方法。

let user = Auth.auth().currentUser
var credential: AuthCredential

// Prompt the user to re-provide their sign-in credentials

user?.reauthenticate(with: credential) { error in
  if let error = error {
    // An error happened.
  } else {
    // User re-authenticated.
  }
}

我从编译器收到错误和警告，如下所示：

错误：

在初始化之前使用变量'凭证'

警告：

'reauthenticate（with：completion :)'已弃用：请使用reauthenticateAndRetrieveDataWithCredential：completion：对于Objective-C或reauthenticateAndRetrieveData（WithCredential：completion :)来代替Swift。

有没有人更新方法的例子？

Answer 1

let user = Auth.auth().currentUser
var credential: AuthCredential
user?.reauthenticateAndRetrieveData(with: credential, completion: {(authResult, error) in
            if let error = error {
                // An error happened.
            }else{
                // User re-authenticated.
            }
        })

您收到错误是因为您尚未初始化凭据您必须首先初始化AuthCredential

这些凭证可能有所不同

EmailAuthCredential

FacebookAuthCredential

GithubAuthCredential

GoogleAuthCredential

PhoneAuthCredential

PlayGamesAuthCredential

TwitterAuthCredential

根据您的身份验证方法初始化变量，例如如果您选择了电子邮件，则可以使用

var credential: AuthCredential = EmailAuthProvider.credential(withEmail: "email", password: "pass")