WingCloudServer/Tools/TestTools/client/lib/main.dart

import 'package:flutter/material.dart';
import 'package:ustest/ApplyConsultationScreen.dart';
import 'package:ustest/Services/LocalStorageService.dart';
import 'package:ustest/Services/UserService.dart';
import 'package:ustest/Services/ApiTestService.dart';
import 'package:ustest/SignInScreen.dart';
import 'package:ustest/MainScreen.dart';
import 'package:get_it/get_it.dart';
import 'package:colorize_logger/colorize_logger.dart';

import 'Services/ConsultationService.dart';

void main() {
  setup();
  runApp(const MyApp());
}

final getIt = GetIt.instance;
void setup() {
  Logger.client = ColorizeLoggerClient();
  Logger.info('The first log');
  getIt.registerSingleton<LocalStorageService>(LocalStorageService());
  getIt.registerSingleton<ApiTestService>(ApiTestService());
  getIt.registerSingleton<UserService>(UserService());
  getIt.registerSingleton<ConsultationService>(ConsultationService());

// Alternatively you could write it if you don't like global variables
}

class MyApp extends StatelessWidget {
  const MyApp();

  @override
  Widget build(BuildContext context) {
    print("build MyApp");
    return MaterialApp(
      routes: {
        '/': (context) => MainScreen(),
        '/signin': (context) => const SignInScreen(),
        '/applyconsultation': (context) => const ApplyConsultationScreen()      
      },
    );
  }
}