iphone - 检查应用内购买是否已购买 iphone

Question

我向商店提交了一个 iPhone 应用程序并获得批准，但应用内购买的某些功能无法正常工作。结果是，尝试安装应用内购买的用户被收取费用，并且苹果已记录他们已经购买了附加功能。我已经解决了这个问题，并使用 NSUserDefaults 来跟踪用户是否购买了该功能。问题是已经付费的用户。有没有办法通过苹果检查该功能是否已经付费？

谢谢。

Answer 1

请参阅Restoring Transactions应用内购买指南的部分。具体来说:

Store Kit provides built-in functionality to restore transactions for non-consumable products, auto-renewable subscriptions and free subscriptions. To restore transactions, your application calls the payment queue’s restoreCompletedTransactions method. The payment queue sends a request to the App Store to restore the transctions. In return, the App Store generates a new restore transaction for each transaction that was previously completed.

如果它是消耗品(不应该是)，那么我认为没有办法通过苹果来做到这一点。