Firebase Auth - 获取提供商ID [英] Firebase Auth - get provider ID

问题描述

我正在使用以下代码来检测身份验证提供程序并正确注销

I'm using the following code, to detect auth provider and log out properly

static func logOut() {
    let auth = FIRAuth.auth()!
    let provider = auth.currentUser?.providerID
    switch provider! {
        case "Facebook": FBSDKLoginManager().logOut()
        case "Google": GIDSignIn.sharedInstance().signOut()
        case "Twitter": Twitter.sharedInstance().sessionStore.logOutUserID(TWTRAPIClient.withCurrentUser().userID!)
        default:
            print("Unknown provider ID: \(provider!)")
            return
    }
    try! auth.signOut()
}

但提供商始终是Firebase。我究竟做错了什么？ 0_o当我登录twitter时，该代码抛出Facebook。提前致谢

But provider is always "Firebase". What am I doing wrong? 0_o Once that code throw "Facebook" when I was logged in twitter. Thanks in advance

UPD：是的，我实际上可以在 UserDefaults 中存储身份验证提供程序，但可能是Firebase错误。我正在使用Firebase SDK 3.5.2

UPD: Yeah, I actually can store auth provider in UserDefaults, but maybe it's Firebase bug. I'm using Firebase SDK 3.5.2

推荐答案

由于用户可以使用多个提供商登录其Firebase身份验证帐户， -level提供者ID现在（通常） Firebase 。

Since a user can sign into their Firebase Authentication account with multiple providers, the top-level provider ID will now (usually) be Firebase.

但 currentUser 有一个 providerData 属性，提供有关特定提供商的信息。循环 FIRAuth.auth（）！。currentUser.providerData 将为您提供 FIRUserInfo.providerID 。

But the currentUser has a providerData property that provides information on the speciic providers. Looping over FIRAuth.auth()!.currentUser.providerData will give you the FIRUserInfo.providerID you're looking for.

另请参阅有关UID的问题，这些问题类似： Firebase会返回多个ID，这是唯一的ID？

See also this question about UIDs, which are in a similar situation: Firebase returns multiple IDs, Which is unique one?

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