重新验证用户凭据斯威夫特 [英] Re-authenticating User Credentials Swift

问题描述

我想给用户，让他们改变自己的登录信息之前重新进行身份验证。然而，由于近期火力地堡更新，我发现文件而无益的。使用此链接我产生了以下的authenticateUser（）函数

I wish to re-authenticate a user prior to allowing them to change their login information. However, due to the recent Firebase update, I found the documentation rather unhelpful. Using this link I produced the following authenticateUser() function.

func authenticateUser()
{
    let user = FIRAuth.auth()?.currentUser
    var credential: FIRAuthCredential

    //prompt user to re-enter info

    user?.reauthenticateWithCredential(credential, completion: { (error) in
        if error != nil
        {
            self.displayAlertMessage("Error reauthenticating user")
        }
        else
        {
            //user reauthenticated successfully
        }
    })
}

不过，我不能确定做什么用的类型FIRAuthCredential的凭据变量，以重新验证用户。这个类的文档，可以发现<一个href=\"https://firebase.google.com/docs/reference/ios/firebaseauth/interface_f_i_r_auth_credential#properties\"相对=nofollow>这里。

推荐答案

获取 FIRAuthCredential 对象取决于您要使用重新认证什么提供商。

Getting the FIRAuthCredential object depends on what provider you want to use to reauthenticate.

let credential = FIREmailPasswordAuthProvider.credentialWithEmail(email, password: password)

Facebook的：

let credential = FIRFacebookAuthProvider.credentialWithAccessToken(FBSDKAccessToken.currentAccessToken().tokenString)

微博：

let credential = FIRTwitterAuthProvider.credentialWithToken(session.authToken, secret: session.authTokenSecret)

谷歌：

let authentication = user.authentication
let credential = FIRGoogleAuthProvider.credentialWithIDToken(authentication.idToken, accessToken: authentication.accessToken)

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