如何将RevenueCat集成到我的flutter示例应用程序中？

dependencies:
  revenue_cat: ^x.x.x  # 替换为最新的版本号

import 'package:revenue_cat/revenue_cat.dart';

void main() {
  WidgetsFlutterBinding.ensureInitialized();
  RevenueCat.setup("YOUR_API_KEY");
  runApp(MyApp());
}

Future<void> getSubscriptions() async {
  try {
    final offerings = await RevenueCat.getOfferings();
    final subscription = offerings.current.subscription;
    print("订阅ID：${subscription.identifier}");
    print("订阅状态：${subscription.isActive ? '激活' : '未激活'}");
    print("订阅价格：${subscription.priceString}");
    // 其他订阅信息...
  } catch (e) {
    print("获取订阅信息失败：$e");
  }
}

RevenueCat.addPurchasesUpdatedListener((purchases) {
  for (var purchase in purchases) {
    if (purchase.isSubscribed) {
      // 处理订阅成功逻辑
    } else if (purchase.isSubscriptionActive) {
      // 处理订阅续订逻辑
    } else {
      // 处理订阅过期逻辑
    }
  }
});