Flutter hold splash screen for 3 Seconds. How to implement splash screen in Flutter?

Question

How to show splash screen in flutter for 3 seconds and then go next my login screen.

I have tried.countdowntimer but import is unresolved

import \'pack         


        

Answer 1

refer bellow main.dart

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

void main() {
  runApp(new MaterialApp(
    home: new MyApp(),
  ));
}

class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() => new _MyAppState();
}

class _MyAppState extends State<MyApp> {
  @override
  void initState() {
    super.initState();
    new Future.delayed(
        const Duration(seconds: 3),
        () => Navigator.push(
              context,
              MaterialPageRoute(builder: (context) => LoginScreen()),
            ));
  }

  @override
  Widget build(BuildContext context) {
    return new Scaffold(
      backgroundColor: Colors.white,
      body: Container(
        child: new Column(children: <Widget>[
          Divider(
            height: 240.0,
            color: Colors.white,
          ),
          new Image.asset(
            'assets/logo.png',
            fit: BoxFit.cover,
            repeat: ImageRepeat.noRepeat,
            width: 170.0,
          ),
          Divider(
            height: 105.2,
            color: Colors.white,
          ),
        ]),
      ),
    );
  }
}

Hope this will helps you

Answer 2

You can use Future.delayed constructor in your initState. This will keep your SplashScreen for the duration you specify before the navigation happen.

class SplashScreen extends StatefulWidget {
  @override
  _SplashScreenState createState() => new _SplashScreenState();
}

class _SplashScreenState extends State<SplashScreen> {
  @override
  void initState (){
    super.initState();
    // TODO initial state stuff
    new Future.delayed(const Duration(seconds: 4));
  }
  @override
  Widget build(BuildContext context) {
    //build
  }
}

I only copied the answers from:this

Answer 3

Future.delayed would be a good solution without a countdown.

But considering you have a countdown, you can use the animation framework Flutter provides.

The idea behind it would be to use an AnimationController with a duration of 3 seconds. Start the animation as soon as the splashScreen is instantiated. And add a listener to redirect to /login on animation end.

Then pass that controller to an AnimationBuilder which would handle the formating of your countdown based on animationController.lastElaspedDuration.

class SplashScreen extends StatefulWidget {
  final Duration duration;

  const SplashScreen({this.duration});

  @override
  _SplashScreenState createState() => new _SplashScreenState();
}

class _SplashScreenState extends State<SplashScreen> with SingleTickerProviderStateMixin {
  AnimationController animationController;

  @override
  void initState() {
    animationController = new AnimationController(duration: widget.duration, vsync: this)
      ..forward()
      ..addStatusListener((status) {
        if (status == AnimationStatus.completed) {
          Navigator.pushReplacementNamed(context, '/login');
        }
      });
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return new AnimatedBuilder(
      animation: animationController,
      builder: (context, _) {
        return new Center(
          child: new Text(animationController.lastElapsedDuration.inSeconds.toString()),
        );
      },
    );
  }
}

Answer 4

Simple solution which i use in every app.

Use Timer class in build method code snippet

class SplashScreen extends StatefulWidget {
  @override
  Splash createState() => Splash();
}

class Splash extends State<SplashScreen>  {

  @override
  void initState() {
    super.initState();

  }
  @override
  Widget build(BuildContext context) {
        Timer(
            Duration(seconds: 3),
                () =>
            Navigator.of(context).pushReplacement(MaterialPageRoute(
                builder: (BuildContext context) => LandingScreen())));


    var assetsImage = new AssetImage(
        'images/new_logo.png'); //<- Creates an object that fetches an image.
    var image = new Image(
        image: assetsImage,
        height:300); //<- Creates a widget that displays an image.

    return MaterialApp(
      home: Scaffold(
        /* appBar: AppBar(
          title: Text("MyApp"),
          backgroundColor:
              Colors.blue, //<- background color to combine with the picture :-)
        ),*/
        body: Container(
          decoration: new BoxDecoration(color: Colors.white),
          child: new Center(
            child: image,
          ),
        ), //<- place where the image appears
      ),
    );
  }
}

Answer 5

I needed a widget with 5 seconds delay. My solution was as following:

class Waiting extends StatefulWidget {
  @override
  _WaitingState createState() => _WaitingState();
}

class _WaitingState extends State<Waiting> {
  bool voxt = false;

  @override
  Widget build(BuildContext context) {
    return FutureBuilder(
      future: Future.delayed(Duration(seconds: 3)),
      builder: (c, s) => s.connectionState != ConnectionState.done
          ? Text('Waiting')
          : Text('3 sec passed')
    );
  }
}

Now Waiting widget can be called where needed.

Answer 6

The cleanest approach without adding explicit timers.

Use Time based SplashScreen.

class TimeBasedSplash extends State<MyApp>{

  @override
  Widget build(BuildContext context) {
    return new SplashScreen(
      seconds: 10,
      navigateAfterSeconds: new HomeScreen(),// Where to navigate after 10 secs
      image: new Image.asset('assets/images/flutter_logo.png'),
      photoSize: 200,
      loaderColor: Colors.white,
      styleTextUnderTheLoader : const TextStyle(fontSize: 18.0, fontWeight: FontWeight.bold, color: Colors.white),
     loadingText: new Text('Loading...'),
      gradientBackground: LinearGradient(
        begin: Alignment.topCenter,
        end: Alignment.bottomCenter,
        colors: <Color>[
          Colors.lightBlue,
          Colors.indigo
        ],
      ),
    );
  }

}

In main class

void main(){
  runApp(new MaterialApp(
    home: new MyApp(),
  ));
}


class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() => new _MyAppState();
}

class _MyAppState extends State<MyApp> {
  @override
  Widget build(BuildContext context) {
    return new TimeBasedSplash().build(context);
  }
}