loqate_flutter 是一个用于 Flutter 的地址选择插件，它基于 Loqate 的地址验证和自动补全服务。通过这个插件，你可以在应用中集成地址搜索、自动补全和地址验证功能。

安装

首先，你需要在 pubspec.yaml 文件中添加 loqate_flutter 插件的依赖：

dependencies:
  flutter:
    sdk: flutter
  loqate_flutter: ^1.0.0  # 请检查最新版本

然后，运行 flutter pub get 来安装依赖。

配置

在使用 loqate_flutter 之前，你需要获取一个 Loqate API 密钥。你可以在 Loqate 官网上注册并获取 API 密钥。

使用步骤

1. 初始化插件

   在你的 Dart 文件中导入 loqate_flutter 插件，并初始化它：

   import 'package:loqate_flutter/loqate_flutter.dart';
   
   void main() {
     Loqate.initialize(apiKey: 'YOUR_API_KEY');
     runApp(MyApp());
   }
   

2. 使用地址搜索功能

   你可以使用 Loqate 提供的 searchAddress 方法来搜索地址。以下是一个简单的示例：

   import 'package:flutter/material.dart';
   import 'package:loqate_flutter/loqate_flutter.dart';
   
   class AddressSearchPage extends StatefulWidget {
     [@override](/user/override)
     _AddressSearchPageState createState() => _AddressSearchPageState();
   }
   
   class _AddressSearchPageState extends State<AddressSearchPage> {
     List<Address> addresses = [];
   
     Future<void> searchAddress(String query) async {
       final results = await Loqate.searchAddress(query);
       setState(() {
         addresses = results;
       });
     }
   
     [@override](/user/override)
     Widget build(BuildContext context) {
       return Scaffold(
         appBar: AppBar(
           title: Text('Address Search'),
         ),
         body: Column(
           children: [
             TextField(
               onChanged: searchAddress,
               decoration: InputDecoration(
                 labelText: 'Enter address',
               ),
             ),
             Expanded(
               child: ListView.builder(
                 itemCount: addresses.length,
                 itemBuilder: (context, index) {
                   final address = addresses[index];
                   return ListTile(
                     title: Text(address.summary),
                     onTap: () {
                       // Handle address selection
                       print('Selected address: ${address.summary}');
                     },
                   );
                 },
               ),
             ),
           ],
         ),
       );
     }
   }
   

3. 获取地址详情

   当你选择一个地址后，你可以使用 retrieveAddress 方法来获取该地址的详细信息：

   Future<void> retrieveAddressDetails(String id) async {
     final addressDetails = await Loqate.retrieveAddress(id);
     print('Address details: $addressDetails');
   }
   

4. 处理地址选择

   在用户选择一个地址后，你可以调用 retrieveAddressDetails 方法来获取完整的地址信息，并将其显示或存储在应用中。

示例

以下是一个完整的示例，展示了如何使用 loqate_flutter 插件进行地址搜索和选择：

import 'package:flutter/material.dart';
import 'package:loqate_flutter/loqate_flutter.dart';

void main() {
  Loqate.initialize(apiKey: 'YOUR_API_KEY');
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Loqate Flutter Example',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: AddressSearchPage(),
    );
  }
}

class AddressSearchPage extends StatefulWidget {
  [@override](/user/override)
  _AddressSearchPageState createState() => _AddressSearchPageState();
}

class _AddressSearchPageState extends State<AddressSearchPage> {
  List<Address> addresses = [];

  Future<void> searchAddress(String query) async {
    final results = await Loqate.searchAddress(query);
    setState(() {
      addresses = results;
    });
  }

  Future<void> retrieveAddressDetails(String id) async {
    final addressDetails = await Loqate.retrieveAddress(id);
    print('Address details: $addressDetails');
  }

  [@override](/user/override)
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Address Search'),
      ),
      body: Column(
        children: [
          TextField(
            onChanged: searchAddress,
            decoration: InputDecoration(
              labelText: 'Enter address',
            ),
          ),
          Expanded(
            child: ListView.builder(
              itemCount: addresses.length,
              itemBuilder: (context, index) {
                final address = addresses[index];
                return ListTile(
                  title: Text(address.summary),
                  onTap: () {
                    retrieveAddressDetails(address.id);
                  },
                );
              },
            ),
          ),
        ],
      ),
    );
  }
}