UI

                      import 'package:flutter/material.dart';
import 'package:get/get.dart';
import 'package:getx_restaurant/controllers/splash_controller.dart';

class SplashScreen extends StatelessWidget {
  SplashScreen({Key? key}) : super(key: key);


  @override
  Widget build(BuildContext context) {
    Get.put(SplashController());
    return Scaffold(

      body: Center(
        child: Text(
          'Add',
          style: TextStyle(fontSize: 20.0),
        ),
      ),
    );
  }
}

Controller

import 'package:flutter/cupertino.dart';
import 'package:get/get.dart';
import 'package:getx_restaurant/home.dart';
import 'dart:async';

class SplashController extends GetxController {
  @override
  void onInit() {
    super.onInit();
    Future.delayed(const Duration(seconds: 2), () {
      Get.off(
          Home()
      );
    });

  }
}

Main dart

import 'package:flutter/material.dart';
import 'package:get/get.dart';
import 'package:get_storage/get_storage.dart';
import 'package:getx_restaurant/app_theme.dart';
import 'package:getx_restaurant/controllers/store_controller.dart';
import 'package:getx_restaurant/controllers/splash_controller.dart';
import 'package:getx_restaurant/controllers/theme_controller.dart';
import 'package:getx_restaurant/home.dart';
import 'package:getx_restaurant/screens/add_followers.dart';
import 'package:getx_restaurant/screens/add_reviews.dart';
import 'package:getx_restaurant/screens/add_follower_count.dart';
import 'package:getx_restaurant/screens/update_store_name.dart';
import 'package:getx_restaurant/screens/store_status.dart';
import 'package:getx_restaurant/screens/update_menu.dart';
import 'package:getx_restaurant/services/storage_service.dart';
import 'package:getx_restaurant/store_binding.dart';
import 'package:getx_restaurant/screens/splash.dart';

void main() async {
  await GetStorage.init();
  await Get.putAsync(() => StorageService().init());
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  MyApp({Key? key}) : super(key: key);
  final themeController = Get.put(ThemeController());

  @override
  Widget build(BuildContext context) {
    return GetMaterialApp(
      debugShowCheckedModeBanner: false,
      title: 'GetX Store',
      initialBinding: StoreBinding(),
      theme: Themes.lightTheme,
      darkTheme: Themes.darkTheme,
      themeMode: themeController.theme,
      initialRoute: '/',
      getPages: [
        GetPage(
          name: '/',
          page: () => Home(),
        ),
        GetPage(name: '/edit_name', page: () => UpdateStoreName()),
        GetPage(name: '/add_followers', page: () => AddFollowers()),
        GetPage(name: '/toggle_status', page: () => StoreStatus()),
        GetPage(name: '/edit_follower_count', page: () => AddFollowerCount()),
        GetPage(name: '/add_reviews', page: () => AddReviews()),
        GetPage(name: '/update_menu', page: () => const UpdateMenu()),
      ],
      home: SplashScreen(),
    );
  }
}

1. main.dart call SplashScreen() in the first loading

2. redirect to Home() using Future.delayed() in splash_controller.dart

3. inject SplashController into splash.dart UI