Flutter应用内购买与订阅管理插件apphud_plus的使用

Flutter应用内购买与订阅管理插件apphud_plus的使用

此插件是一个（仅限iOS）替代品和补充工具包，用于官方Apphud包。

特性

• 监听前台和后台的通知（已终止的应用状态）
  • 可以获取通知数据，既可以为字符串形式也可以为自定义类
• 通过产品ID购买商品
• 检查具有特定ID的产品是否存在
• 检查付费墙是否已加载

开始使用

在 AppDelegate.swift 中

导入 ApphudSDK 和 apphud_plus

在 application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) 方法中，在返回之前添加以下行：

Apphud.start(apiKey: "YOUR_API_KEY")
registerForNotifications()

然后添加以下代码，并根据您的需求进行定制：

extension AppDelegate {

    func registerForNotifications() {
        UNUserNotificationCenter.current().delegate = self
        UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .badge, .sound]) { (granted, error) in
            // 处理授权请求
        }
        UIApplication.shared.registerForRemoteNotifications()
    }

    /// 发送设备信息到Apphud
    override func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
        Apphud.submitPushNotificationsToken(token: deviceToken, callback: nil)
    }

    /// 处理注册错误
    override func application(_ application: UIApplication, didFailToRegisterForRemoteNotificationsWithError error: Error) {
    }

    /// 后台通知处理
    override func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) {
        if Apphud.handlePushNotification(apsInfo: response.notification.request.content.userInfo) {
            SwiftApphudPlusPlugin.handleBackgroundNotifications(response.notification.request.content.userInfo)
        } else {
            // 处理其他类型的推送通知
        }
        completionHandler()
    }

    /// 前台通知处理
    override func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {
        if Apphud.handlePushNotification(apsInfo: notification.request.content.userInfo) {
            SwiftApphudPlusPlugin.handleForegroundNotifications(notification.request.content.userInfo)
        } else {
            // 处理其他类型的推送通知
        }
        completionHandler([]) // 返回空数组以避免显示通知横幅
    }
}

请检查 example/lib/main.dart 以查看Flutter代码示例，并确保阅读 apphud_plus.dart 中方法的文档。

注意事项

您可能无法使用示例应用程序进行购买，因为该示例应用程序没有Bundle ID。但是，如果您将API密钥插入到 AppDelegate.swift 文件中，则可以使用某些功能。

示例代码

以下是示例代码，您可以将其作为起点来构建自己的应用：

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

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

final navigationKey = GlobalKey<NavigatorState>();

class MyApp extends StatefulWidget {
  const MyApp({Key? key}) : super(key: key);

  [@override](/user/override)
  State<MyApp> createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  [@override](/user/override)
  void initState() {
    super.initState();
  }

  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
        navigatorKey: navigationKey,
        theme: ThemeData(
            useMaterial3: true,
            colorScheme: ColorScheme.fromSeed(seedColor: Colors.blueAccent)),
        home: const Home());
  }
}

class Home extends StatefulWidget {
  const Home({Key? key}) : super(key: key);

  [@override](/user/override)
  State<Home> createState() => _HomeState();
}

class _HomeState extends State<Home> {
  final _apphudPlusPlugin = ApphudPlus();

  void _showSnackBarWithText(String text) {
    ScaffoldMessenger.of(navigationKey.currentContext!)
        .showSnackBar(SnackBar(content: Text(text)));
  }

  Future<void> paywallsDidLoad() async {
    final payloadsDidLoad = await _apphudPlusPlugin.paywallsDidLoad();
    _showSnackBarWithText('Paywalls did load: $payloadsDidLoad');
  }

  Future<void> checkProductByID(String id) async {
    final result = await _apphudPlusPlugin.hasProductWithId(id);
    _showSnackBarWithText('checkProductByID ($id): $result');
  }

  Future<void> buyProductByID(String id) async {
    final result = await _apphudPlusPlugin.purchase(id);
    _showSnackBarWithText('buyProductByID ($id): $result');
  }

  void _showDialogWithTextField(Function(String) callback, BuildContext context) {
    final controller = TextEditingController();
    showDialog(
        context: context,
        builder: (context) {
          return AlertDialog(
            title: const Text('Enter product ID'),
            actions: [
              ElevatedButton(
                child: const Text('Cancel'),
                onPressed: () {
                  Navigator.of(context).pop();
                },
              ),
              ElevatedButton(
                child: const Text('OK'),
                onPressed: () {
                  Navigator.of(context).pop();
                  callback(controller.text);
                },
              ),
            ],
            content: TextField(
              autocorrect: false,
              textCapitalization: TextCapitalization.none,
              onChanged: (value) {},
              controller: controller,
            ),
          );
        });
  }

  [@override](/user/override)
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('apphud_plus'),
      ),
      body: Center(
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.center,
          children: [
            ElevatedButton(
              onPressed: paywallsDidLoad,
              child: const Text('Paywalls did load'),
            ),
            ElevatedButton(
                onPressed: () {
                  _showDialogWithTextField(
                      (p0) => checkProductByID(p0), context);
                },
                child: const Text('Check product by ID')),
            ElevatedButton(
                onPressed: () {
                  _showDialogWithTextField((p0) => buyProductByID(p0), context);
                },
                child: const Text('Buy product by ID'))
          ],
        ),
      ),
    );
  }
}