路由命名

  1. class MyApp extends StatelessWidget {
  2.   @override
  3.   Widget build(BuildContext context) {
  4.     return MaterialApp(
  5.       title: 'Flutter Demo',
  6.       theme: ThemeData(
  7.         primarySwatch: Colors.blue,
  8.       ),
  9.       routes: { // 注册路由表
  10.         'new_page': (context) => NewRoute(),
  11.         '/': (context) => MyHomePage(title: 'Flutter Demo Home page')
  12.       }, 
  13.     );
  14.   }
  15. }
  17. //根据name跳转
  18. Navigator.pushNamed(context, 'new_page');
  21. //不使用name
  22. class RouterTestRoute extends StatelessWidget {
  23.   @override
  24.   Widget build(BuildContext context) {
  25.     return Center(
  26.       child: ElevatedButton(
  27.         onPressed: () async {
  28.           var result = await Navigator.push(context,
  29.               MaterialPageRoute(builder: (context) {
  30.             return TipRoute(text: '我是提示xxx');
  31.           }));
  32.           print('路由返回值： $result');
  33.         },
  34.         child: Text('打开提示页'),
  35.       ),
  36.     );
  37.   }
  38. }
  1. import 'package:flutter/material.dart';
  3. void main() {
  4.   runApp(MyApp());
  5. }
  7. class MyApp extends StatelessWidget {
  8.   @override
  9.   Widget build(BuildContext context) {
  10.     return MaterialApp(
  11.       title: 'Flutter Demo',
  12.       theme: ThemeData(
  13.         primarySwatch: Colors.blue,
  14.       ),
  15.       home: MyHomePage(title: 'Flutter Demo Home Page'),
  16.     );
  17.   }
  18. }
  20. class MyHomePage extends StatefulWidget {
  21.   MyHomePage({Key key, this.title}) : super(key: key);
  22.   final String title;
  24.   @override
  25.   _MyHomePageState createState() => _MyHomePageState();
  26. }
  28. class _MyHomePageState extends State<MyHomePage> {
  29.   int _counter = 0;
  31.   void _incrementCounter() {
  32.     setState(() {
  33.       _counter++;
  34.     });
  35.   }
  37.   @override
  38.   Widget build(BuildContext context) {
  39.     return Scaffold(
  40.       appBar: AppBar(
  41.         title: Text(widget.title),
  42.       ),
  43.       body: Center(
  44.         child: Column(
  45.           mainAxisAlignment: MainAxisAlignment.center,
  46.           children: <Widget>[
  47.             Text(
  48.               'You have pushed the button this many times:',
  49.             ),
  50.             Text(
  51.               '$_counter',
  52.               style: Theme.of(context).textTheme.headline4,
  53.             ),
  54.             TextButton(
  55.               onPressed: () {
  56.                 Navigator.push(context, MaterialPageRoute(builder: (context) {
  57.                   return RouterTestRoute();
  58.                 }));
  59.               },
  60.               child: Text('open new route'),
  61.             )
  62.           ],
  63.         ),
  64.       ),
  65.       floatingActionButton: FloatingActionButton(
  66.         onPressed: _incrementCounter,
  67.         tooltip: 'Increment',
  68.         child: Icon(Icons.add),
  69.       ),
  70.     );
  71.   }
  72. }
  74. // 创建一个新路由
  75. class NewRoute extends StatelessWidget {
  76.   @override
  77.   Widget build(BuildContext context) {
  78.     return Scaffold(
  79.       appBar: AppBar(
  80.         title: Text('New route'),
  81.       ),
  82.       body: Center(
  83.         child: Text("This is new Route"),
  84.       ),
  85.     );
  86.   }
  87. }
  89. class TipRoute extends StatelessWidget {
  90.   // 接收一个text参数
  91.   TipRoute({Key key, @required this.text}) : super(key: key);
  92.   final String text;
  94.   @override
  95.   Widget build(BuildContext context) {
  96.     return Scaffold(
  97.       appBar: AppBar(
  98.         title: Text('提示'),
  99.       ),
  100.       body: Padding(
  101.         padding: EdgeInsets.all(18),
  102.         child: Center(
  103.           child: Column(
  104.             children: <Widget>[
  105.               Text(text),
  106.               ElevatedButton(
  107.                   onPressed: () {
  108.                     Navigator.pop(context, '我是返回值');
  109.                   },
  110.                   child: Text('返回'))
  111.             ],
  112.           ),
  113.         ),
  114.       ),
  115.     );
  116.   }
  117. }
  119. class RouterTestRoute extends StatelessWidget {
  120.   @override
  121.   Widget build(BuildContext context) {
  122.     return Center(
  123.       child: ElevatedButton(
  124.         onPressed: () async {
  125.           var result = await Navigator.push(context,
  126.               MaterialPageRoute(builder: (context) {
  127.             return TipRoute(text: '我是提示xxx');
  128.           }));
  129.           print('路由返回值： $result');
  130.         },
  131.         child: Text('打开提示页'),
  132.       ),
  133.     );
  134.   }
  135. }