android弹出flutter弹窗,Flutter质感设计之弹出菜单

PopupMenuButton控件即弹出菜单控件，点击控件会出现菜单。

import 'package:flutter/material.dart';

class MenusDemo extends StatefulWidget {

@override

_MenusDemoState createState() => new _MenusDemoState();

}

class _MenusDemoState extends State {

String _bodyStr = '显示菜单的点击';

@override

Widget build(BuildContext context) {

return new Scaffold(

appBar: new AppBar(

title: new Text('菜单演示'),

actions: [

new PopupMenuButton(

onSelected: (String value) {

setState(() {

_bodyStr = value;

});

},

itemBuilder: (BuildContext context) => >[

new PopupMenuItem(

value: '选项一的值',

child: new Text('选项一')

),

new PopupMenuItem(

value: '选项二的值',

child: new Text('选项二')

)

]

)

]

),

body: new Center(

child: new Text(_bodyStr)

)

);

}

}

void main() {

runApp(new MaterialApp(

title: 'Flutter教程',

home: new MenusDemo(),

));

}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。