如何在Flutter Firebase UI中获取AuthResult以查找其他用户信息 [英] How to get AuthResult in flutter Firebase UI to find additionalUserInfo

问题描述

我是新手，使用示例代码登录后，我得到了用户，但是我需要确定用户以前是否使用过该应用程序(然后卸载)或在新设备上使用过.我看到了另一个问题获取AuthResult，如下所示，

I am new to flutter and using sample code that does signIn, I get the user, but I need to find if the user has previously used the App ( and then uninstalled) or using on a new device. I see another question that gets the AuthResult as shown below,

AuthResult authResult = await _auth.signInWithCredential(credential);
  if (authResult.additionalUserInfo.isNewUser) {
    //User logging in for the first time
    // Redirect user to tutorial 
  }
  else {
    //User has already logged in before.
    //Show user profile
  }

但是 SignInScreen ，不会返回authResult

But the SignInScreen, does not return the authResult

SignInScreen(
        title: "Demo",
        header: new Padding(
          padding: const EdgeInsets.symmetric(vertical: 16.0),
          child: new Padding(
            padding: const EdgeInsets.all(16.0),
            child: new Text("Demo"),
          ),
        ),
        showBar: true,
        // horizontalPadding: 8,
        bottomPadding: 5,
        avoidBottomInset: true,
        color: Color(0xFF363636),
        providers: [
          ProvidersTypes.google,
          ProvidersTypes.phone,
          ProvidersTypes.facebook,
        //  ProvidersTypes.twitter,
        //  ProvidersTypes.email
        ],
        twitterConsumerKey: "",
        twitterConsumerSecret: "", horizontalPadding: 12,
      )

推荐答案

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From looking at the code, it looks like the firebase-ui-flutter library that you're using does not expose the user from the active sign-in operation (calls to signInWith...).

您要么必须更新库以公开功能，要么编写自己的登录UI，或者找到另一个可以更好地处理它的库.您也可以在存储库中提交错误，但是过去两个维护很少年.有 fork 似乎有更多更新，但

You'll either have to update the library to expose the functionality, write your own sign-in UI, or find another library that handles it better. You could also file a bug on the repo, but it's seen very little maintenance in the past two years. There's a fork that seems more update, but that code also doesn't expose the result from active sign-in.

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