android–Flutter一次性介绍屏幕？

概述我的应用程序有一个简介屏幕,但每次打开应用程序时都会显示我需要第一次证明这一点怎么做？//ThISISTHESCREENCOMES1STWHENOPENINGTHEAPP(SPLASHSCREEN)classSplashScreenextendsStatefulWidget{@override_SplashScreenStatecreateState()=>_SplashScreenSta

我的应用程序有一个简介屏幕,但每次打开应用程序时都会显示
我需要第一次证明这一点
怎么做？

//ThIS IS THE SCREEN COMES 1ST WHEN opening THE APP (SPLASHSCREEN)class SplashScreen extends StatefulWidget {@overrIDe_SplashScreenState createState() => _SplashScreenState();}class _SplashScreenState extends State<SplashScreen> {@overrIDevoID initState() {super.initState();//After 2seconds of time the Introscreen will e opened by bellow codeTimer(Duration(seconds: 2), () => MyNavigator.goToIntroscreen(context));}//The below code has the text to show for the spalshing screen@overrIDeWidget build(BuildContext context){return Scaffold(body: new Center(child:Text('SPLASH SCREEN'),));}}

此屏幕始终打开内部屏幕,延迟时间为2秒.
但我只是第一次想要如何使用共享偏好？
请添加所需的代码请….

解决方法:

如果您希望仅首次显示介绍屏幕,则需要在本地保存此用户已经看过的介绍.

对于这样的事情,您可以使用Shared Preference.您可以使用共享偏好flutter package

编辑：

请参阅以下完整测试代码以了解如何使用它：

import 'dart:async';import 'package:Flutter/material.dart';import 'package:shared_preferences/shared_preferences.dart';voID main() => runApp(new MyApp());class MyApp extends StatelessWidget {@overrIDeWidget build(BuildContext context) {    return new MaterialApp(    color: colors.blue,    home: new Splash(),    );}}class Splash extends StatefulWidget {@overrIDeSplashState createState() => new SplashState();}class SplashState extends State<Splash> {Future checkFirstSeen() async {    SharedPreferences prefs = await SharedPreferences.getInstance();    bool _seen = (prefs.getBool('seen') ?? false);    if (_seen) {    Navigator.of(context).pushReplacement(        new MaterialPageRoute(builder: (context) => new Home()));    } else {    prefs.setBool('seen', true);    Navigator.of(context).pushReplacement(        new MaterialPageRoute(builder: (context) => new IntroScreen()));    }}@overrIDevoID initState() {    super.initState();    new Timer(new Duration(milliseconds: 200), () {    checkFirstSeen();    });}@overrIDeWidget build(BuildContext context) {    return new Scaffold(    body: new Center(        child: new Text('Loading...'),    ),    );}}class Home extends StatelessWidget {@overrIDeWidget build(BuildContext context) {    return new Scaffold(    appbar: new Appbar(        Title: new Text('Hello'),    ),    body: new Center(        child: new Text('This is the second page'),    ),    );}}class IntroScreen extends StatelessWidget {@overrIDeWidget build(BuildContext context) {    return new Scaffold(    body: new Center(        child: new Column(        mainAxisSize: MainAxisSize.min,        children: <Widget>[            new Text('This is the intro page'),            new Materialbutton(            child: new Text('Gogo Home Page'),            onpressed: () {                Navigator.of(context).pushReplacement(                    new MaterialPageRoute(builder: (context) => new Home()));            },            )        ],        ),    ),    );}}

总结

以上是内存溢出为你收集整理的android – Flutter一次性介绍屏幕？全部内容，希望文章能够帮你解决android – Flutter一次性介绍屏幕？所遇到的程序开发问题。

如果觉得内存溢出网站内容还不错，欢迎将内存溢出网站推荐给程序员好友。