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在flutter应用程序中添加初始屏幕的正确方法是什么?

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在flutter应用程序中添加初始屏幕的正确方法是什么?

    import 'dart:async';import 'package:flutter/material.dart';import 'package:mingup/screen/login_screen.dart';// This is the Splash Screenclass SplashScreen extends StatefulWidget {  @override  _SplashScreenState createState() => _SplashScreenState();}class _SplashScreenState extends State<SplashScreen> with SingleTickerProviderStateMixin{  AnimationController _animationController;  Animation<double> _animation;  @override  void initState() {    // TODO: implement initState    super.initState();    _animationController = new AnimationController(        vsync: this,        duration: new Duration(milliseconds: 500)    );    _animation = new CurvedAnimation(      parent: _animationController,      curve: Curves.easeOut,    );    _animation.addListener(()=> this.setState((){}));    _animationController.forward();    Timer(Duration(seconds: 10), (){      Navigator.push(context, MaterialPageRoute(builder: (context) => LoginScreen()));    });  }  @override  Widget build(BuildContext context) {    return Scaffold(      body: Stack(        fit: StackFit.expand,        children: <Widget>[          Container( child: Image.asset(   'images/splashscreenbg.png',   fit: BoxFit.cover, )          ),          Column( mainAxisAlignment: MainAxisAlignment.start, children: <Widget>[   Expanded(     flex: 2,     child: Container(       child: Column(         mainAxisAlignment: MainAxisAlignment.center,         children: <Widget>[FlutterLogo(  size: _animation.value * 100.0,),Padding(padding: EdgeInsets.only(top: 10.0)),Text("MingUp", style: TextStyle(color: Colors.white, fontSize: 24.0, fontWeight: FontWeight.bold),)         ],       ),     ),   ), ]          )        ],      ),    );  }}


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