如何使用firebase快速合并自定义登录（电子邮件）与Facebook登录 [英] How to merge custom login (Email) with Facebook login in swift using firebase

问题描述

我正在使用Firebase快速实施自定义（电子邮件）和Facebook登录身份验证。因为，我为每个电子邮件地址启用了多个帐户，同一个用户使用他的电子邮件以及他的Facebook帐户可以登录到应用程序。 Firebase将其视为两个单独的用户，但只要电子邮件地址相同，我想合并它们。我从Facebook网站上找到这个
链接这解释了我试图解决的情况。我正在寻找任何代码示例如何做。

在此先感谢。

解决方案

Firebase实际上相当简单。下面的代码应该工作，我也包括一个链接到描述该过程的文档。

  let credential = FacebookAuthProvider.credential withAccessToken：
 FBSDKAccessToken.current（）。tokenString）
 $ b $ if let user = FIRAuth.auth（）？currentUser {
 user.link（with：credential）{ ，错误）in 
 //在帐户被链接之后执行任何操作
 
 
 $ b $ $ 
 $ b 
以下是关于此主题的Firebase文档的链接：
  https://firebase.google.com/docs/auth/ios/account-linking  
 
I am implementing custom (Email) and Facebook login authentication in swift using Firebase. Since, I enabled multiple accounts per email address, a same user using his email as well as his facebook account can sign in to the app. Firebase considers them as two separate users, but I want to merge them as long as the email address is same. I found this 
link from the Facebook site which explain the scenario which i am trying to solve. I am looking for any code samples on how to do. 

Thanks in advance. 
解决方案
This is actually quite simple with Firebase. The below code should work and I have also included a link to the documentation describing the process.
let credential = FacebookAuthProvider.credential(withAccessToken: 
FBSDKAccessToken.current().tokenString)

if let user = FIRAuth.auth()?.currentUser {
   user.link(with: credential) { (user, error) in
      //perform any actions after the account has been linked
   }
}
Here is a link to the Firebase documentation on the subject:
https://firebase.google.com/docs/auth/ios/account-linking

                        
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