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

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),
          ],
        ),
      ),
    );
  }
}
回到顶部