Flutter城市选择器插件zzy_city_picker的使用
Flutter城市选择器插件zzy_city_picker的使用
简介
这是一个专为中国大陆用户设计的城市选择器插件,支持三种选择模式:选择省份、选择省市、选择省市区。
摘要
以下是一个简单的代码示例,展示如何使用zzy_city_picker
来选择省份:
final result = await ZzyCityPicker.showPicker(context, currentResult: selected, type: ZzyCityPickerType.p);
if (result != null) {
setState(() {
selected = result;
});
}
用法
-
选择省
使用ZzyCityPickerType.p
类型来选择省份。ZzyCityPicker.showPicker(context, currentResult: selected, type: ZzyCityPickerType.p);
-
选择省市
使用ZzyCityPickerType.pc
类型来选择省份和城市。ZzyCityPicker.showPicker(context, currentResult: selected, type: ZzyCityPickerType.pc);
-
选择省市区
使用默认类型ZzyCityPickerType.pca
来选择省份、城市和区县。如果需要自定义类型,也可以显式传入ZzyCityPickerType.pca
。ZzyCityPicker.showPicker(context, currentResult: selected);
完整示例代码
以下是一个完整的示例代码,展示了如何在Flutter应用中集成并使用zzy_city_picker
插件。
import 'package:flutter/material.dart';
import 'package:zzy_city_picker/data_model/zzy_city_pic_result_model.dart';
import 'package:zzy_city_picker/data_model/zzy_city_picker_type.dart';
import 'package:zzy_city_picker/zzy_city_picker.dart';
void main() {
runApp(const MyApp());
}
class MyApp extends StatelessWidget {
const MyApp({Key? key}) : super(key: key);
[@override](/user/override)
Widget build(BuildContext context) {
return const MaterialApp(home: HomePage());
}
}
class HomePage extends StatefulWidget {
const HomePage({Key? key}) : super(key: key);
[@override](/user/override)
State<HomePage> createState() => _HomePageState();
}
class _HomePageState extends State<HomePage> {
ZzyCityPicResultModel? selectedP; // 选中的省份
ZzyCityPicResultModel? selectedPC; // 选中的省份和城市
ZzyCityPicResultModel? selectedPCA; // 选中的省份、城市和区县
[@override](/user/override)
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
appBar: AppBar(
title: const Text('zzyCityPicker 示例'),
),
body: Builder(
builder: (context) {
return Padding(
padding: const EdgeInsets.only(right: 20),
child: Column(
children: [
// 选择省
Padding(
padding: const EdgeInsets.only(top: 20),
child: Row(
children: [
const Expanded(
flex: 100,
child: Center(
child: Text("选择省"),
),
),
Expanded(
flex: 300,
child: GestureDetector(
onTap: () async {
final result = await ZzyCityPicker.showPicker(context, currentResult: selectedP, type: ZzyCityPickerType.p);
if (result != null) {
setState(() {
selectedP = result;
});
}
},
child: Container(
height: 40,
alignment: Alignment.centerLeft,
padding: const EdgeInsets.symmetric(horizontal: 15),
decoration: BoxDecoration(
border: Border.all(
width: 1,
color: Colors.black26,
),
),
child: Text(selectedP != null ? "${selectedP!.provinceName}" : "请选择"),
),
),
),
],
),
),
// 选择省市
Padding(
padding: const EdgeInsets.only(top: 20),
child: Row(
children: [
const Expanded(
flex: 100,
child: Center(
child: Text("选择省市"),
),
),
Expanded(
flex: 300,
child: GestureDetector(
onTap: () async {
final result = await ZzyCityPicker.showPicker(context, currentResult: selectedPC, type: ZzyCityPickerType.pc);
if (result != null) {
setState(() {
selectedPC = result;
});
}
},
child: Container(
height: 40,
alignment: Alignment.centerLeft,
padding: const EdgeInsets.symmetric(horizontal: 15),
decoration: BoxDecoration(
border: Border.all(
width: 1,
color: Colors.black26,
),
),
child: Text(selectedPC != null ? "${selectedPC!.provinceName}-${selectedPC!.cityName}" : "请选择"),
),
),
),
],
),
),
// 选择省市区
Padding(
padding: const EdgeInsets.only(top: 20),
child: Row(
children: [
const Expanded(
flex: 100,
child: Center(
child: Text("选择省市区"),
),
),
Expanded(
flex: 300,
child: GestureDetector(
onTap: () async {
final result = await ZzyCityPicker.showPicker(context, currentResult: selectedPCA);
if (result != null) {
setState(() {
selectedPCA = result;
});
}
},
child: Container(
height: 40,
alignment: Alignment.centerLeft,
padding: const EdgeInsets.symmetric(horizontal: 15),
decoration: BoxDecoration(
border: Border.all(
width: 1,
color: Colors.black26,
),
),
child: Text(selectedPCA != null ? "${selectedPCA!.provinceName}-${selectedPCA!.cityName}-${selectedPCA!.areaName}" : "请选择"),
),
),
),
],
),
),
],
),
);
},
),
),
);
}
}
更多关于Flutter城市选择器插件zzy_city_picker的使用的实战教程也可以访问 https://www.itying.com/category-92-b0.html
更多关于Flutter城市选择器插件zzy_city_picker的使用的实战系列教程也可以访问 https://www.itying.com/category-92-b0.html
zzy_city_picker
是一个用于 Flutter 应用中的城市选择器插件,它可以帮助用户方便地选择省、市、区信息。以下是如何在 Flutter 项目中使用 zzy_city_picker
插件的详细步骤。
1. 添加依赖
首先,你需要在 pubspec.yaml
文件中添加 zzy_city_picker
插件的依赖。
dependencies:
flutter:
sdk: flutter
zzy_city_picker: ^latest_version
然后运行 flutter pub get
来安装依赖。
2. 导入插件
在你的 Dart 文件中导入 zzy_city_picker
插件。
import 'package:zzy_city_picker/zzy_city_picker.dart';
3. 使用城市选择器
你可以在需要的地方调用 ZzyCityPicker.showCityPicker
方法来显示城市选择器。
void _showCityPicker() async {
final result = await ZzyCityPicker.showCityPicker(
context: context,
// 可选参数
// backgroundColor: Colors.white,
// cancelText: '取消',
// confirmText: '确定',
// title: '选择城市',
);
if (result != null) {
print('选择的城市: ${result.province} - ${result.city} - ${result.district}');
} else {
print('用户取消了选择');
}
}
4. 触发城市选择器
你可以在按钮的 onPressed
事件中调用 _showCityPicker
方法来触发城市选择器。
ElevatedButton(
onPressed: _showCityPicker,
child: Text('选择城市'),
),
5. 处理选择结果
ZzyCityPicker.showCityPicker
方法返回一个 CityPickerResult
对象,包含用户选择的省、市、区信息。你可以根据需要进行处理。
if (result != null) {
setState(() {
selectedProvince = result.province;
selectedCity = result.city;
selectedDistrict = result.district;
});
}
6. 自定义样式(可选)
ZzyCityPicker.showCityPicker
方法提供了多个可选参数,允许你自定义城市选择器的外观和行为。例如:
backgroundColor
: 设置背景颜色。cancelText
: 设置取消按钮的文本。confirmText
: 设置确认按钮的文本。title
: 设置选择器的标题。
final result = await ZzyCityPicker.showCityPicker(
context: context,
backgroundColor: Colors.white,
cancelText: '取消',
confirmText: '确定',
title: '选择城市',
);
7. 完整示例
以下是一个完整的示例代码:
import 'package:flutter/material.dart';
import 'package:zzy_city_picker/zzy_city_picker.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
[@override](/user/override)
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: MyHomePage(),
);
}
}
class MyHomePage extends StatefulWidget {
[@override](/user/override)
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
String selectedProvince = '';
String selectedCity = '';
String selectedDistrict = '';
void _showCityPicker() async {
final result = await ZzyCityPicker.showCityPicker(
context: context,
backgroundColor: Colors.white,
cancelText: '取消',
confirmText: '确定',
title: '选择城市',
);
if (result != null) {
setState(() {
selectedProvince = result.province;
selectedCity = result.city;
selectedDistrict = result.district;
});
} else {
print('用户取消了选择');
}
}
[@override](/user/override)
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('城市选择器示例'),
),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
ElevatedButton(
onPressed: _showCityPicker,
child: Text('选择城市'),
),
SizedBox(height: 20),
Text('选择的城市: $selectedProvince - $selectedCity - $selectedDistrict'),
],
),
),
);
}
}