Flutter页面跳转的二种方式

import 'package:flutter/material.dart';
import 'package:xionghuaqiang/NewRoute.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
        visualDensity: VisualDensity.adaptivePlatformDensity,
      ),
      home: MyHomePage(title: '主页'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  MyHomePage({Key key, this.title}) : super(key: key);

  // This widget is the home page of your application. It is stateful, meaning
  // that it has a State object (defined below) that contains fields that affect
  // how it looks.

  // This class is the configuration for the state. It holds the values (in this
  // case the title) provided by the parent (in this case the App widget) and
  // used by the build method of the State. Fields in a Widget subclass are
  // always marked "final".

  final String title;

  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  int _counter = 0;
//
//  void _incrementCounter() {
//    setState(() {
//      // This call to setState tells the Flutter framework that something has
//      // changed in this State, which causes it to rerun the build method below
//      // so that the display can reflect the updated values. If we changed
//      // _counter without calling setState(), then the build method would not be
//      // called again, and so nothing would appear to happen.
//      _counter = _counter+2;
//    });
//
//  }

  @override
  Widget build(BuildContext context) {
    // This method is rerun every time setState is called, for instance as done
    // by the _incrementCounter method above.
    //
    // The Flutter framework has been optimized to make rerunning build methods
    // fast, so that you can just rebuild anything that needs updating rather
    // than having to individually change instances of widgets.
    return Scaffold(
      appBar: AppBar(
        // Here we take the value from the MyHomePage object that was created by
        // the App.build method, and use it to set our appbar title.
        title: Text(widget.title),
      ),
      body: Center(

        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,

          children: <Widget>[
            FlatButton(
              child: Text("open new route"),
              textColor: Colors.blue,
              onPressed: () {
                //导航到新路由
                Navigator.push( context,
                    MaterialPageRoute(builder: (context) {
                      return NewRoute();
                    }));
              },
            ),
            new Text(
              'You have pushed the button this many times:',
            ),
          ],

        ),
      ),
//      floatingActionButton: FloatingActionButton(
//        onPressed: _incrementCounter,
//        tooltip: 'Increment',
//        child: Icon(Icons.add),
//      ), // This trailing comma makes auto-formatting nicer for build methods.
    );
  }
}

import 'package:flutter/material.dart';

class NewRoute extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text("New route"),
      ),
      body: Center(
        child: Text("欢迎来到新页面"),
      ),
    );
  }
}

import 'package:flutter/material.dart';
import 'package:routerdemo/TipRoute.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
        visualDensity: VisualDensity.adaptivePlatformDensity,
      ),
      home: MyHomePage(title: '主页'),

    );
  }
}

class MyHomePage extends StatefulWidget {
  MyHomePage({Key key, this.title}) : super(key: key);
  final String title;
  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Center(
//        child: Column(

//          mainAxisAlignment: MainAxisAlignment.center,
//          children: <Widget>[
//            FlatButton(
//              child: Text("open new route"),
//              textColor: Colors.blue,
//              onPressed: () {
//                //导航到新路由
//                Navigator.push( context,
//                    MaterialPageRoute(builder: (context) {
//                      return NewRoute();
//                    }));
//              },
//            ),
//            new Text(
//              'You have pushed the button this many times:',
//            ),
//           ]

//        ),
        child: RaisedButton(
          //点击事件
          onPressed: () async {
            // 打开`TipRoute`，并等待返回结果
            var result = await Navigator.push(
              context,
              MaterialPageRoute(
                builder: (context) {
                  //构造方法传参
                  return TipRoute(
                    // 路由参数
                    text: "我是提示xxxx",
                  );
                },
              ),
            );
            //输出`TipRoute`路由返回结果
            print("路由返回值: $result");
          },
          child: Text("打开提示页"),
        ),
      ),
    );
  }
}