颤栗。GoogleSignIn()实例没有authenticatedClient()方法

Question

遵循本教程：https://youtu.be/z4MsuZiEezY?t=251，我在GoogleSignIn()实例上没有authenticatedClient()方法，就像视频中显示的那样。这是创建实例和访问方法的正确顺序吗？

GoogleSignIn  gsi = GoogleSignIn(
      clientId: "XXX",
      scopes: [YouTubeApi.youtubeReadonlyScope]
 );

gsi.signIn();

gsi.onCurrentUserChanged.listen((account) async {
  setState(() {
    _account = account;
  });

  if (_account != null) {
    final client = await gsi.authenticatedClient() // <- don't have this method on the gsi instance!
    final yapi = YouTubeApi(client);               // <- as a consequence cannot create a YouTubeApi instance
  }
});

Answer 1

这是一种扩展方法。

您还需要添加extension_google_sign_in_as_googleapis_auth包

即：

flutter pub add extension_google_sign_in_as_googleapis_auth

然后：

import 'package:extension_google_sign_in_as_googleapis_auth/extension_google_sign_in_as_googleapis_auth.dart';