Flutter韩国邮政编码查询插件kpostal_web的使用

Flutter韩国邮政编码查询插件kpostal_web的使用

关于 kpostal_web

“kpostal_web” 是受 “kpostal” 启发创建的。 由于 “kpostal” 不支持网页，因此您可以在 Flutter web 中使用 “kpostal_web”。

示例代码

import 'package:flutter/material.dart';
import 'package:kpostal_web/widget/kakao_address_widget.dart';

class KakaoAddressPage extends StatefulWidget {
  const KakaoAddressPage({super.key});

  [@override](/user/override)
  State<KakaoAddressPage> createState() => _KakaoAddressPageState();
}

class _KakaoAddressPageState extends State<KakaoAddressPage> {
  [@override](/user/override)
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        backgroundColor: Theme.of(context).colorScheme.inversePrimary,
        title: const Text('地址页面'),
      ),
      body: Row(
        children: [
          Expanded(
            child: SizedBox(
              height: double.infinity,
              child: Container(
                alignment: Alignment.center,
                color: Colors.blue,
                child: const Text(
                  '右侧的 KakaoAddressWidget 在树结构中正常工作。',
                  style: TextStyle(color: Colors.white),
                ),
              ),
            ),
          ),
          Expanded(
            flex: 2,
            child: KakaoAddressWidget(
              onComplete: (kakaoAddress) {
                print('onComplete KakaoAddress: $kakaoAddress');
              },
              onClose: () {
                Navigator.of(context).pop();
              },
            ),
          ),
        ],
      ),
    );
  }
}

示例代码说明

1main.dart 文件是整个应用的入口文件。

void main() {
  runApp(const MyApp());
}

• MyApp 类定义了了整个应用的主题和主页。

class MyApp extends StatelessWidget {
  final String title = 'Flutter Web 拉卡拉地址示例';

  const MyApp({super.key});

  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      title: title,
      theme: ThemeData(
        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
        useMaterial3: true,
      ),
      home: MyHomePage(title: title),
    );
  }
}

• MyHomePage 是应用的主页。

class MyHomePage extends StatelessWidget {
  final String title;

  const MyHomePage({required this.title, super.key});

  [@override](/user/override)
  Widget build(BuildContext context) {
    return const KakaoAddressPage();
  }
}

• KakaoAddressPage 是一个简单的页面，用于展示如何在 Flutter web 中使用 kpostal_web 插件。

class KakaoAddressPage extends StatefulWidget {
  const KakaoAddressPage({super.key});

  [@override](/user/override)
  State<KakaoAddressPage> createState() => _KakaoAddressPageState();
}

class _KakaoAddressPageState extends State<KakaoAddressPage> {
  [@override](/user/override)
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        backgroundColor: Theme.of(context).colorScheme.inversePrimary,
        title: const Text('地址页面'),
      ),
      body: Row(
        children: [
          Expanded(
            child: SizedBox(
              height: double.infinity,
              child: Container(
                alignment: Alignment.center,
                color: Colors.blue,
                child: const Text(
                  '右侧的 KakaoAddressWidget 在树结构中正常工作。',
                  style: TextStyle(color: Colors.white),
                ),
              ),
            ),
          ),
          Expanded(
            flex: 2,
            child: KakaoAddressWidget(
              onComplete: (kakaoAddress) {
                print('onComplete KakaoAddress: $kakaoAddress');
              },
              onClose: () {
                Navigator.of(context).pop();
              },
            ),
          ),
        ],
      ),
    );
  }
}

• KakaoAddressWidget 是一个自定义的 widget，用于显示拉卡拉地址信息。

class KakaoAddressWidget extends StatefulWidget {
  final Function(kakaoAddress) onComplete;
  final Function onClose;

  const KakaoAddressWidget({
    required this.onComplete,
    required this.onClose,
  });

  [@override](/user/override)
  _KakaoAddressWidgetState createState() => _KakaoAddressWidgetState();
}

class _KakaoAddressWidgetState extends State<KakaoAddressWidget> {
  late String kakaoAddress;

  [@override](/user/override)
  void initState() {
    super.initState();
    // 这里可以 添加初始化逻辑
  }

  [@override](/user/override)
  Widget build(BuildContext context) {
    return Padding(
      padding: const EdgeInsets.all(8.0),
      child: ElevatedButton(
        onPressed: () async {
          try {
            kakaoAddress = await getKakaoAddress();
            setState(() {
              kakaoAddress = kakaoAddress!;
            });
          } catch (e) {
            print(e);
          }
        },
        child: const Text('获取地址'),
      ),
    );
  }

  Future<String> getKakaoAddress() async {
    // 这里可以添加实际的网络请求逻辑来获取地址
    return '1 some address data here ';
  }
}