在Flutter中哪里添加Firebase.InitializeApp？[副本]

Question

错误：没有创建firebase应用程序调用firebase.InitializeApp我的问题：我应该在哪里添加firebase初始化

带有firestore引用“Users”的无状态小部件

class FeedBack extends StatelessWidget {
  CollectionReference users = FirebaseFirestore.instance.collection('users');
  late String txtnote;
  late String note;
  @override
  Widget build(BuildContext context) {
    return Scaffold(

child: ElevatedButton(
                    onPressed: () async {
                      await users.add({
                        'subject': note,
                        'email': '[e-mail]',
                        'description': txtnote
                      }).then((value) => print('Data Added Successfully!'));
                    },
                    child: Text(
                      'Submit',
                      style: TextStyle(color: Colors.white),
                    ),

注意：这个dart文件'feedback.dart'不包含void main函数，它是一个无状态小部件

Answer 1

您可以在应用程序的de主入口点内调用：

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