flutter_down_menu 0.1.0 flutter_down_menu: ^0.1.0 copied to clipboard
Customize the drop-down menu, quickly realize the head drop-down menu, and support the rapid realization of single selection, multiple selection list, secondary list, single selection, multiple select [...]
import 'package:flutter/material.dart';
import 'package:flutter_down_menu/flutter_down_menu.dart' as m;
import 'package:flutter_down_menu/flutter_down_menu.dart';
void main() {
runApp(const MyApp());
}
class MyApp extends StatelessWidget {
const MyApp({Key? key}) : super(key: key);
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Drown Menu Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: const MyHomePage(title: 'Drown Menu '),
);
}
}
class MyHomePage extends StatefulWidget {
const MyHomePage({Key? key, required this.title}) : super(key: key);
final String title;
@override
State<MyHomePage> createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
final m.MenuController _menuController = m.MenuController();
final List<FilterBean> list1 = [];
final List<FilterBean> list2 = [];
final List<FilterBean> list3 = [];
@override
void initState() {
super.initState();
for (int i = 0; i < 10; i++) {
list1.add(FilterBean(name: "选项$i"));
list2.add(FilterBean(name: "选项2--$i"));
list3.add(FilterBean(name: "选项3--$i"));
}
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(widget.title),
),
body: Column(
children: [
DropDownMenuHeader(
menuController: _menuController,
isAverage: true,
titles: const ["检测领域", "业务类型", "距离"]),
Expanded(
child: Stack (
children: [
InkWell(
child: Center(
child: Text(
"选择:item${_menuController.index}-- ${_menuController.title}"),
),
onTap: () {},
),
DropDownMenu(
heights: [
300,
200,
300
],
milliseconds: 300,
children: [
MenuList(
index: 0,
choose: Choose.multi,
menuController: _menuController,
filterList: list1,
onTap: (index) {
setState(() {});
},
),
MenuList(
index: 1,
menuController: _menuController,
filterList: list2,
crossAxisCount: 3,
padding: const EdgeInsetsDirectional.all(15),
outLineColor: Colors.transparent,
bgColor: Colors.transparent,
unBgColor: Colors.transparent,
unOutLineColor: Colors.transparent,
mainAxisExtent: 20,
color: Colors.white,
itemAlignment: Alignment.centerLeft,
onTap: (index) {
setState(() {});
},
),
MenuList(
index: 2,
menuController: _menuController,
filterList: list3,
onTap: (index) {
setState(() {});
},
),
],
menuController: _menuController),
],
))
],
));
}
}