Flutter地址搜索插件api_cep_search的使用
Flutter地址搜索插件api_cep_search的使用
api_cep_search
是一个用于通过 apiCEP 查询地址的包。
开始使用
在 pubspec.yaml
文件中添加最新版本(运行 dart pub get
):
dependencies:
api_cep_search: ^1.0.5
示例
通过 apiCEP 查询 CEP。
您可以传递固定值或变量给函数,它将返回地址数据:
/// 只需传入有效的 CEP 值(不带 '-')
SearchCep.getInstance("15370496")
以下是完整的示例代码:
import 'package:flutter/material.dart';
import 'package:api_cep_search/api_cep_search.dart';
class _MyHomePageState extends State<MyHomePage> {
[@override](/user/override)
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(widget.title),
),
body: Center(
child: FutureBuilder<SearchCep>(
future: SearchCep.getInstance("15370496"),
builder: (context, snapshot) {
// 如果数据为空,则显示空容器
if (snapshot.data == null) return Container();
// 显示查询到的地址信息
return Column(
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
snapshot.data.code, // 显示 CEP
style: TextStyle(fontSize: 20),
),
Text(snapshot.data.state, style: TextStyle(fontSize: 20)), // 显示州
Text(snapshot.data.city, style: TextStyle(fontSize: 20)), // 显示城市
Text(snapshot.data.district, style: TextStyle(fontSize: 20)), // 显示地区
Text(snapshot.data.address, style: TextStyle(fontSize: 20)), // 显示街道地址
],
);
})),
);
}
}
完整示例代码
以下是完整的 main.dart
示例代码:
import 'package:flutter/material.dart';
import 'package:api_cep_search/api_cep_search.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
[@override](/user/override)
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo apiCEP',
theme: ThemeData(
primarySwatch: Colors.blue,
visualDensity: VisualDensity.adaptivePlatformDensity,
),
home: MyHomePage(title: 'Flutter Demo apiCEP'),
);
}
}
class MyHomePage extends StatefulWidget {
MyHomePage({Key key, this.title}) : super(key: key);
final String title;
[@override](/user/override)
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
[@override](/user/override)
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(widget.title),
),
body: Center(
child: FutureBuilder<SearchCep>(
future: SearchCep.getInstance("15370496"),
builder: (context, snapshot) {
if (snapshot.data == null) return Container();
return Column(
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
snapshot.data.code,
style: TextStyle(fontSize: 20),
),
Text(snapshot.data.state, style: TextStyle(fontSize: 20)),
Text(snapshot.data.city, style: TextStyle(fontSize: 20)),
Text(snapshot.data.district, style: TextStyle(fontSize: 20)),
Text(snapshot.data.address, style: TextStyle(fontSize: 20)),
],
);
})),
);
}
}
更多关于Flutter地址搜索插件api_cep_search的使用的实战教程也可以访问 https://www.itying.com/category-92-b0.html
1 回复
更多关于Flutter地址搜索插件api_cep_search的使用的实战系列教程也可以访问 https://www.itying.com/category-92-b0.html
api_cep_search
是一个用于在 Flutter 应用中搜索巴西邮政编码(CEP)的插件。它可以帮助开发者轻松地获取与特定 CEP 相关的地址信息。以下是使用 api_cep_search
插件的基本步骤:
1. 添加依赖
首先,你需要在 pubspec.yaml
文件中添加 api_cep_search
插件的依赖。
dependencies:
flutter:
sdk: flutter
api_cep_search: ^1.0.0 # 请检查最新版本
然后运行 flutter pub get
来获取依赖。
2. 导入包
在你的 Dart 文件中导入 api_cep_search
包。
import 'package:api_cep_search/api_cep_search.dart';
3. 使用插件
你可以使用 ApiCepSearch
类来搜索 CEP 并获取地址信息。
void searchCep(String cep) async {
try {
var cepInfo = await ApiCepSearch.searchCep(cep: cep);
print('CEP: ${cepInfo.cep}');
print('Logradouro: ${cepInfo.logradouro}');
print('Bairro: ${cepInfo.bairro}');
print('Cidade: ${cepInfo.localidade}');
print('Estado: ${cepInfo.uf}');
} catch (e) {
print('Erro ao buscar CEP: $e');
}
}
4. 示例代码
以下是一个完整的示例,展示如何在 Flutter 应用中使用 api_cep_search
插件来搜索 CEP 并显示结果。
import 'package:flutter/material.dart';
import 'package:api_cep_search/api_cep_search.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
[@override](/user/override)
Widget build(BuildContext context) {
return MaterialApp(
home: CepSearchScreen(),
);
}
}
class CepSearchScreen extends StatefulWidget {
[@override](/user/override)
_CepSearchScreenState createState() => _CepSearchScreenState();
}
class _CepSearchScreenState extends State<CepSearchScreen> {
final _cepController = TextEditingController();
String _result = '';
void _searchCep() async {
String cep = _cepController.text;
if (cep.isEmpty) {
setState(() {
_result = 'Por favor, insira um CEP válido.';
});
return;
}
try {
var cepInfo = await ApiCepSearch.searchCep(cep: cep);
setState(() {
_result = '''
CEP: ${cepInfo.cep}
Logradouro: ${cepInfo.logradouro}
Bairro: ${cepInfo.bairro}
Cidade: ${cepInfo.localidade}
Estado: ${cepInfo.uf}
''';
});
} catch (e) {
setState(() {
_result = 'Erro ao buscar CEP: $e';
});
}
}
[@override](/user/override)
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('CEP Search'),
),
body: Padding(
padding: const EdgeInsets.all(16.0),
child: Column(
children: [
TextField(
controller: _cepController,
decoration: InputDecoration(
labelText: 'CEP',
hintText: 'Digite o CEP',
),
keyboardType: TextInputType.number,
),
SizedBox(height: 20),
ElevatedButton(
onPressed: _searchCep,
child: Text('Buscar CEP'),
),
SizedBox(height: 20),
Text(_result),
],
),
),
);
}
}