Banner:图片展示,手动切换,指示器,自动轮播,点击可以跳转 LIstView:整体滑动 ,根据滑动的位置改变主页名字(参考最后演示的GIF) UI拆解并实现: AppBar: appBar: new AppBar( title: new Text('$_title'),//动态改变title centerTitle: true, // 居中 ), //头部的标题AppBar Banner: 拆解1:图片展示 Widg...
title: new Text('homepage'), ), body: Center( child: Column( children: [ OutlinedButton( onPressed: () { Navigator.pushNamed(context, '/a'); }, child: new Text('PageA'), ), OutlinedButton( onPressed: () { Navigator.pushNamed(context, 'b'); }, child: new Text('PageB'), ), ...
MaterialApp(// 定义路由表routes:{'/':(context)=>HomePage(),'/second':(context)=>SecondPage(),'/detail':(context)=>DetailPage(),},); 在上面的示例中,我们定义了一个简单的路由表,将三个命名路由(‘/’、‘/second’、‘/detail’)分别映射到对应的页面组件(HomePage、SecondPage、DetailPage)。
class MyHomePage extends StatefulWidget { MyHomePage({Key key, this.title}) : super(key: key); final String title; @override _MyHomePageState createState() => new _MyHomePageState(); } class _MyHomePageState extends State<MyHomePage> { void _changeState() { setState(() { state.isLoadi...
home: MyHomePage(title: 'Flutter Demo Home Page'), ); } } class MyHomePage extends StatefulWidget { MyHomePage({Key key, this.title}) : super(key: key); final String title; @override _MyHomePageState createState() => _MyHomePageState(); ...
Security Find and fix vulnerabilities Actions Automate any workflow Codespaces Instant dev environments Issues Plan and track work Code Review Manage code changes Discussions Collaborate outside of code Code Search Find more, search less Explore
如下,HomePage为StatefulWidget,在其状态类_HomePageState中维护Duration对象的变化。当点击按钮时,触发updateDuration方法,在当前Duration对象的基础上+ 100 ms。之后,通过setState触发重新构建。 代码语言:javascript 复制 classHomePageextendsStatefulWidget{constHomePage({Key?key}):super(key:key);@override ...
Widgetbuild(BuildContext context){returnMaterialApp(title:'Flutter Demo',theme:ThemeData(primaryColor:Colors.teal,),home:MyHomePage(title:'Flutter Demo Home Page'),//配置路由initialRoute:'/pageone',routes:datas,);}} 封装路由跳转: 代码语言:javascript ...
home: MyHomePage(title: 'Flutter Demo Home Page'), ); } } class MyHomePage extends StatefulWidget { MyHomePage({Key key, this.title}) : super(key: key); final String title; @override _MyHomePageState createState() { return _MyHomePageState(); ...
Widgetbuild(BuildContext context){returnMaterialApp(title:'Flutter Demo',theme:ThemeData(primarySwatch:Colors.blue,),home:HomePage(),);}}classHomePageextendsStatelessWidget{@override Widgetbuild(BuildContext context){/// 获取当前的 padding 信息final EdgeInsets edgeInsets=MediaQuery.of(context).padding;ret...