Flutter - Tutorial 002. Creating a Splash Screen with the rounting to Home Screen

Dart, Flutter


After Hello World on Flutter write an application with two screens:

  • SplashScreen - Application Input Screen
  • HomeScreen - Home screen application

Interestingly, Flutter has a navigation system for the windows (pages) of the application. This is somewhat similar to the route system in Django to determine which View to call.

In fact, in this application, we will need to call the MaterialApp widget, which accepts the routes route system, which will determine which windows to open. The first window will be SplashScreen , after two seconds it will have to open HomeScreen .

Project structure

SplashScreen project structure

I show only the necessary part of the project structure:

  • main.dart - file with the main function and the launch of MaterialApp
  • splash_screen.dart - initial application window
  • home_screen.dart - Home application window


import 'package:flutter/material.dart';
import 'package:evileg/screens/Splash/splash_screen.dart';
import 'package:evileg/screens/Home/home_screen.dart';

// Application launch
void main() => runApp(MyApp());

// The main application widget
class MyApp extends StatelessWidget {

  // We form application routing
  final routes = <String, WidgetBuilder>{
    // The path that creates the Home Screen
    '/Home': (BuildContext context) => HomeScreen(title: 'EVILEG')

  // Redefine widget instance construction method
  Widget build(BuildContext context) {
    // This will be an application with the support of Material Design.
    return MaterialApp(
      title: 'EVILEG',
      // in which there will be a Splash Screen indicating the next route
      home: SplashScreen(nextRoute: '/Home'),
      // passing routes to the application
      routes: routes,


import 'dart:core';
import 'dart:async';
import 'package:flutter/material.dart';

// Inheriting from the state widget
// that is, a widget for changing the state of which is not required to recreate its instance
class SplashScreen extends StatefulWidget {
  // variable to store the route
  final String nextRoute;

  // the constructor, the constructor body is moved to the argument area,
  // that is, immediately the arguments are passed to the body of the constructor and set by internal variables
  // Dart allows it

  // all same widgets should create their own state,
  // need to override this method
  State<StatefulWidget> createState() => _SplashScreenState();

// Create a widget state
class _SplashScreenState extends State<SplashScreen> {

  // State initialization
  void initState() {
    // Create a timer to switch SplashScreen to HomeScreen after 2 seconds.
      Duration(seconds: 2),
      // To do this, use the static method of the navigator.
      // This is very similar to passing the lambda function to the std::function argument in C++.
      () { Navigator.of(context).pushReplacementNamed(widget.nextRoute); }

  // Widget creation
  Widget build(BuildContext context) {
    // And this is the layout of the widget,
    // a bit like QML although obviously not a JSON structure
    return Scaffold(
      backgroundColor: Colors.blue,
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            Text("Welcome to social network of programmers")



import 'dart:core';
import 'package:flutter/material.dart';

// The same widget as SplashScreen, just give it another title
class HomeScreen extends StatefulWidget {
  HomeScreen({Key key, this.title}) : super(key: key);
  final String title;

  _HomeScreenState createState() => _HomeScreenState();

// Creation a widget state
class _HomeScreenState extends State<HomeScreen> {

  // Unlike SplashScreen add AppBar
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            Text('Home page',),


As a result, we get the following two windows of the application.


It is existing 2 seconds



Switches to it after SplashScreen


Java vs Dart

Of course, I haven’t been engaged in the development for Android for a very long time, and even more so in Java. Surely everything has changed a lot and it is possible that for the better, but as far as I remember, Java paid less attention to creating a state, which sometimes caused some problems. Since this state was necessary to create, save, etc. Sometimes the application fell even when the screen was rotated. This caused very big problems and inconveniences.

In Dart, widgets are created with context passing when routing between windows. That is, as I understand it, the state of the application is no longer divided into different activations, but exists more monolithically. This may solve some of the problems that were in Java, but certainly can cause other problems that were not there. Find out about this in further articles. The most interesting is how it will end. In the end, at the moment I plan to try to write a mobile application for the site on Flutter / Dart.

We recommend hosting TIMEWEB
We recommend hosting TIMEWEB
Stable hosting, on which the social network EVILEG is located. For projects on Django we recommend VDS hosting.
Support the author Donate


Only authorized users can post comments.
Please, Log in or Sign up
How to become an author?

Contribute to the evolution of the EVILEG community.

Learn how to become a site author.

Learn it

Good day, Dear Users!!!

I am Evgenii Legotckoi, developer of EVILEG. And it is my hobby project, which helps to learn programming another programmers and developers

If the site helped you, and you want also support the development of the site, than you can donate by following ways


Let me recommend you the excellent hosting on which EVILEG is located.

For many years, Timeweb has been proving his stability.

For projects on Django I recommend VDS hosting

View Hosting Timeweb
June 6, 2020, 12:20 a.m.

C ++ - Test 004. Pointers, Arrays and Loops

  • Result:60points,
  • Rating points-1
June 6, 2020, 12:15 a.m.

C++ - Test 001. The first program and data types

  • Result:53points,
  • Rating points-4
June 5, 2020, 5:47 p.m.

C++ - Test 005. Structures and Classes

  • Result:83points,
  • Rating points4
Last comments
June 6, 2020, 12:20 p.m.

How to install and setting up Django JET

на Django >3+ работать не будет. Либо придется лезть внутрь и переопределять метод unicode . Либо писать декоратор
June 5, 2020, 11:52 a.m.

Распознавание изображений на Python с помощью TensorFlow и Keras

Огромное спасибо за метериал, по-больше бы подобных статей (с подробным описанием работы и примерами применения) на тему современных технологий. Вопрос поразмышлять. На текущий момент реал…
June 5, 2020, 2:39 a.m.
Evgenij Legotskoj

Qt/C++ - Tutorial 091. How to write a custom delegate controlling the highlighting of a row in a table

По-моему, смысла в этом нет особого. Если делегат будет игнорировать настройки таблицы, то это приведёт ещё к большему непониманию, что вообще происходит, для программиста, который после вас буд…
June 5, 2020, 2:34 a.m.

Qt/C++ - Tutorial 091. How to write a custom delegate controlling the highlighting of a row in a table

Сижу, размышляю: можно ли переписать делегата так, чтобы независимо от настроек строк выделялись строки?
Now discuss on the forum
June 6, 2020, 8:26 a.m.

Галерея изображений

June 6, 2020, 2:54 a.m.

Qt/C++ Определение положения курсора над действие(кнопкой) в QToolBar

Доброго дня. Возник вопрос - как можно определить что курсор находится над определенным действием(кнопкой) в qtoolbar ? mainwindow.cpp MainWindow::MainWi…
June 6, 2020, 1:45 a.m.

Qt/C++ особенности QProxyStyle

Да, Вы правы. Код был скопирован с сайта (уже не помню с какого), но решил пойти по пути более легком. Пришлось переписать - кому интересно: использовал stackedWidget для пе…
June 6, 2020, 12:08 a.m.

Посоветуйте новичку (базы данных и Qt, что учить)

Блин, а я недавно купил Шлее Qt 5.10 :( С детства хотел стать программистом, баловался Паскалем, писал простенькие программки на Delphi, создавал движок на php, изучал C (забросил и перешел на п…
June 5, 2020, 2:09 p.m.

QPlainTextEdit настройка цвета фона

Вечер добрый. Пытаюсь настроить цвет фона QPlainTextEdit следующим образом: CodeEditor::CodeEditor(QWidget *parent) : QPlainTextEdit(parent){ ... QPalette::ColorRole role = bac…
© EVILEG 2015-2020
Recommend hosting TIMEWEB