mobile-flutter/covas_mobile/lib/main.dart

import 'package:flutter/material.dart';
import 'package:google_mobile_ads/google_mobile_ads.dart';
import 'pages/LoginDemo.dart';

void main() async {
  WidgetsFlutterBinding.ensureInitialized();
  await MobileAds.instance.initialize();

  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      home: LoginDemo(),
    );
  }
}