第10章路由及导航 -页面跳转返回数据

防采集标记：亢少军老师的课程和资料

import 'package:flutter/material.dart';



void main() {
  runApp(new MaterialApp(
    title: '页面跳转返回数据示例',
    home: new FirstPage(),
  ));
}



class FirstPage extends StatelessWidget {


  @override
  Widget build(BuildContext context) {
    return new Scaffold(
      appBar: new AppBar(
        title: new Text("页面跳转返回数据示例"),
      ),
      body: new Center(child: new RouteButton(),),
    );
  }
}

class RouteButton extends StatelessWidget {
  @override
  Widget build(BuildContext context) {

    return new RaisedButton(
      onPressed: (){
        _navigateToSecondPage(context);
      },
      child: new Text('跳转到第二个页面'),
    );

  }

  _navigateToSecondPage(BuildContext context) async {

    final result = await Navigator.push(
      context,
      new MaterialPageRoute(builder: (context) => new SecondPage()),
    );

    Scaffold.of(context).showSnackBar(new SnackBar(content: new Text("$result")));

  }
}


class SecondPage extends StatelessWidget {

  @override
  Widget build(BuildContext context) {
    return new Scaffold(
      appBar: new AppBar(
        title: new Text("选择一条数据"),
      ),
      body: new Center(
        child: new Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            new Padding(
              padding: const EdgeInsets.all(8.0),
              child: new RaisedButton(
                onPressed: (){
                  Navigator.pop(context,'hi google');
                },
                child: new Text('hi google'),
              ),
            ),
            new Padding(
              padding: const EdgeInsets.all(8.0),
              child: new RaisedButton(
                onPressed: (){
                  Navigator.pop(context,'hi flutter');
                },
                child: new Text('hi flutter'),
              ),
            ),
          ],
        ),
      ),
    );
  }
}

• Flutter技术入门与实战: http://product.dangdang.com/26485813.html
• Flutter交流学习群：894109159
• Flutter开源项目请关注: https://github.com/kangshaojun
• Flutter****：https://edu.****.net/lecturer/2436

@作者: 亢少军