地区选择-三级联动
Posted xhrr
tags:
篇首语:本文由小常识网(cha138.com)小编为大家整理,主要介绍了地区选择-三级联动相关的知识,希望对你有一定的参考价值。
1.
city_pickers: ^0.0.1
import ‘package:city_pickers/city_pickers.dart‘;
2.
class TabsPage extends StatefulWidget @override _TabsPageState createState() => new _TabsPageState(); class _TabsPageState extends State<TabsPage> with SingleTickerProviderStateMixin TabController _tabController; String cityName; //初始化,一加载便会触发该方法 void initState() cityName=‘杭州‘; super.initState(); _tabController = new TabController( vsync: this, length: 2, ); Widget build(BuildContext context) //初始化 ScreenUtil.instance = ScreenUtil(width: 750, height: 1334)..init(context); return DefaultTabController( length: 2, child: Scaffold( appBar: appBar(), ), ); Widget appBar() return AppBar( centerTitle: true, leading: Builder( builder: (context) => GestureDetector( child: Padding( padding: EdgeInsets.all(8.0), child: IconButton( icon: Icon(Icons.person), onPressed: null, ) ), onTap: () => Scaffold.of(context).openDrawer(), ), ), title: Container( child: FlatButton( // color: Colors.yellow, child: Row( mainAxisAlignment: MainAxisAlignment.center, children: <Widget>[ Text( ‘$cityName‘, style: TextStyle( color: Colors.black, fontSize: ScreenUtil.getInstance().setSp(30) ), textAlign: TextAlign.left, ), IconButton( alignment: Alignment.centerLeft, icon: Icon( Icons.arrow_drop_down, color: Color.fromRGBO(46, 48, 56, 1), ), onPressed: () debugPrint(‘down‘); , ) ], ), onPressed: () show(context); , ), ), ); //调用三级联动 show(BuildContext context) async Result result = await CityPickers.showCityPicker( context: context, ); print(result); setState(() this.cityName = result.cityName; );
以上是关于地区选择-三级联动的主要内容,如果未能解决你的问题,请参考以下文章