2019-10-29

import 'package:flutter/material.dart';

void main(){
  runApp(MaterialApp(
    title: "导航演示01",
    home: new FirstScreen(),
  ));
}

class FirstScreen extends StatelessWidget{
  @override
  Widget build(BuildContext context) {
    // TODO: implement build
    return Scaffold(
      appBar: AppBar(title: Text('导航页面'),),
      body: Center(
        child: RaisedButton(
          child: Text('查看商品详情页'),
          onPressed: (){
            Navigator.push(context, MaterialPageRoute(
              builder: (context)=> SecondScreen()
            ));
          },
        ),
      ),
    );
  }
}

class SecondScreen extends StatelessWidget{
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: Text('商品详情页面'),),
     body: Center(
       child: RaisedButton(
         child: Text('返回'),
         onPressed: (){
           Navigator.pop(context);
         },
       ),
     ),
    );
  }
}