1.Flutter学习

1.名次翻译

StatelessWidget 无状态组件

Scaffold 脚手架

Widget 小部件

Center 居中

ElevatedButton 提升按钮

onPressed 按下事件

Navigator 导航

MaterialPageRoute  页面路由

2.按钮

   ElevatedButton(
            child: Text("Go11111 back"),
            onPressed: () {
              print('This is 2nd page');
              Navigator.pop(context);
            },
            onLongPress: () {
              print('长按了');
              Navigator.pop(context);
            })

1.页面跳转

import 'package:flutter/material.dart';

void main() {
  runApp(new MaterialApp(
    title: 'navigate demo',
    home: new FirstScreen(),
  ));
}

class FirstScreen extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('First page'),
      ),
      body: Center(
        child: ElevatedButton(
            child: Text('Go to 2nd page'),
            onPressed: () {
              print('This is first page');
             //页面跳转的代码
              Navigator.push(context,
                  MaterialPageRoute(builder: (context) => SecondScreen()));

            }),
      ),
    );
  }
}

class SecondScreen extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    print('${this} hashCode=${this.hashCode}');
    return Scaffold(
      appBar: AppBar(
        title: Text('Second page'),
      ),
      body: Center(
        child: ElevatedButton(
            child: Text("Go back"),
            onPressed: () {
              print('This is 2nd page');
            //返回前一个页面
              Navigator.pop(context);
            }),
      ),
    );
  }
}