c/c++语言开发共享Flutter有状态组件使用详解

// ignore_for_file: prefer_const_constructors, prefer_collection_literals, deprecated_member_use, unused_local_variable, must_be_immutable, prefer_const_literals_to_create_immutables    import 'package:flutter/material.dart';    void main() {    runapp(myapp());  }    class myapp extends statelesswidget {    const myapp({key? key}) : super(key: key);      @override    widget build(buildcontext context) {      return materialapp(        home: scaffold(          appbar: appbar(            title: const text('flutter demo'),          ),          body: const homecontent(),        ),        theme: themedata(          primaryswatch: colors.yellow,        ),      );    }  }  //有状态自定义组件有两个类，我们需要返回的写在第二个类中  class homecontent extends statefulwidget {    const homecontent({key? key}) : super(key: key);    @override    _homecontentstate createstate() => _homecontentstate();  }    class _homecontentstate extends state<homecontent> {    int count = 0;    @override    widget build(buildcontext context) {      return center(        child: column(        children: [          chip(            label: text("$count"),          ),          elevatedbutton(              onpressed: () {                setstate(() {                  count++;                });              },              child: text("点击加一"))        ],      ),      );    }  }