flutter奮闘記

import 'package:flutter/material.dart';

void main() {
  runApp(const MyTodoApp());
}

class MyTodoApp extends StatelessWidget {
  const MyTodoApp({Key? key}) : super(key: key);
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter TODO App',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      // リスト一覧画面を表示
      home: const TodoListPage(),
    );
  }
}

class TodoListPage extends StatelessWidget {
  const TodoListPage({Key? key}) : super(key: key);
  @override
  Widget build(BuildContext context) {
    return const Scaffold(
      body: Center(
        child: Text('test'),
      ),
    );
  }
}

flutter pub add google_sign_in
flutter pub add firebase_core 
flutter pub add firebase_auth

  google_sign_in: ^5.3.1
  firebase_core: ^1.17.0
  firebase_auth: ^3.3.18

<!-- Put me in the [my_project]/ios/Runner/Info.plist file -->
<!-- Google Sign-in Section -->
<key>CFBundleURLTypes</key>
<array>
	<dict>
		<key>CFBundleTypeRole</key>
		<string>Editor</string>
		<key>CFBundleURLSchemes</key>
		<array>
			<!-- TODO Replace this value: -->
			<!-- Copied from GoogleService-Info.plist key REVERSED_CLIENT_ID -->
			<string>com.googleusercontent.apps.861823949799-vc35cprkp249096uujjn0vvnmcvjppkn</string>
		</array>
	</dict>
</array>
<!-- End of the Google Sign-in Section -->

Future<void> main() async {
~~~
  WidgetsFlutterBinding.ensureInitialized();
  await Firebase.initializeApp();