CODE EXAMPLE FOR DART

routes in flutter

// add 
// static String routeName = '/splash';

//main.dart
routes:routes

import 'package:flutter/material.dart';
//import required file

final Map<String, WidgetBuilder> routes = {
  SplashScreen.routeName:(context) => SplashScreen(),
  OnBoard.routeName:(context) => OnBoard(),
  HomeScreen.routeName:(context)=> HomeScreen(),
};