Google api 如何使用angular dart auth_browser隐式流检索Google认证用户范围信息

我试图遵循dart+google auth getting started（），但很难找到对javascript sdk工具包（）的类似调用

什么是等效的isSignedIn，您如何访问所请求的范围详细信息，如用户配置文件/电子邮件信息

我认为这可以通过调用peoples api来实现，但没有成功

import 'package:angular/angular.dart';

import 'package:googleapis_auth/auth_browser.dart' as authBrowser;
import 'package:googleapis_auth/auth.dart' as auth;
import 'dart:developer';

@Injectable()
class AuthService {

  static final _clientId = "hidden-.apps.googleusercontent.com";
  static final _secret = "";
  final List<String> _googleScopes = ["email","profile", "openid"];

  static final _identifier = new authBrowser.ClientId(_clientId, _secret);

   signIn(event)  {
     return authBrowser
     .createImplicitBrowserFlow(_identifier, _googleScopes)
     .then((authBrowser.BrowserOAuth2Flow flow) {
        debugger();
       flow
          .clientViaUserConsent()
          .then((auth.AutoRefreshingAuthClient client) {

              final _test = await client.get(
              'https://people.googleapis.com/v1/people/me', 
            ); //returns 403 error, and subsequent no authorization header present

            print(client);
        });
     });
   }
}

可能类似于

flow
      .clientViaUserConsent()
.then((auth.AuthClient client) async {

        debugger();

        await new PeopleApi(client).people
        .get('people/me', personFields: 'coverPhotos,emailAddresses')
        .then( (Person person) {
          print(person);
        });