How to Create Splash Screen in Flutter

import ‘package:flutter/material.dart’;

class Splash extends StatefulWidget{
   @override
    State<StatefulWidget> createState() {
        // TODO: implement createState
        return SplashState();
    }

}

class SplashState extends State<Splash>{
   @override
   Widget build(BuildContext context) {
        // TODO: implement build
        return Scaffold(

        );
    }

}

Initialize Timer in Splash Screen in Flutter

 @override
 void initState() {
     // TODO: implement initState
     super.initState();
     startTimer();
 }

startTimer() async{
         Timer(Duration(seconds: 3), nextScreen);
}

void nextScreen(){

}

Integrate in main.dart file

Material App widget provides home parameter. This parameter is used to display first screen on the launch of flutter application.

import ‘package:flutter/material.dart’;
import ‘package:fluttersplashsample/splash.dart’;

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
    // This widget is the root of your application.
    @override
    Widget build(BuildContext context) {
          return MaterialApp(
              home: Splash(),
          );
     }
}

Final Code for Splash Screen in Flutter

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

class Splash extends StatefulWidget{
  @override
  State<StatefulWidget> createState() {
    // TODO: implement createState
    return SplashState();
  }

}

class SplashState extends State<Splash>{
  @override
  Widget build(BuildContext context) {
    // TODO: implement build
    return Scaffold(

    );
  }

  @override
  void initState() {
    // TODO: implement initState
    super.initState();
    startTimer();
  }

  startTimer() async{
     Timer(Duration(seconds: 3), nextScreen);
  }

   void nextScreen(){

  }

}