objective-c - MKStoreKit 自动更新订阅

Question

我正在使用 MKStoreKit 处理自动续订订阅。我目前正在测试 1 个月的订阅(在测试中订阅持续 5 分钟)。购买订阅后，我等待它过期。到期后，我会检查订阅是否仍然有效。

[[MKStoreManager sharedManager] isSubscriptionActive:kSubscriptionMonthlyIdentifier]

这会像我预期的那样返回 false。但是，由于它是自动续订的，我希望 MKStoreKit 届时会联系 Apple 以重新验证订阅。也许我用错了 MKStoreKit，但根据 docs和 blog post它应该像这样简单:

//App Delegate
[MKStoreManager sharedManager];
//lets me know when the subscription was purchased
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(subscriptionPurchased:) name:kSubscriptionsPurchasedNotification object:nil];    
//lets me know when the subscription expires
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(subscriptionFailed:) name:kSubscriptionsInvalidNotification object:nil];

//In a view with subscription feature
if([[MKStoreManager sharedManager] isSubscriptionActive:kSubscriptionMonthlyIdentifier]){
    //access to subscription feature
}

//Where the user would purchase the subscription
[[MKStoreManager sharedManager] buyFeature:subscriptionId onComplete:^(NSString* purchasedFeature, NSData* receiptData)
{
...
}
 onCancelled:^
{
...
}

我的问题是，当订阅在 Apple 端仍然有效时，为什么 MKStoreKit 不让我知道？

Answer 1

documentation说:

For the sake of testing, there are some differences in behavior between auto-renewable subscriptions in the production environment and in the test environment.

Renewal happens at an accelerated rate, and auto-renewable subscriptions renew a maximum of six times per day. This lets you test how your app handles subscription renewal and how it handles a renewal after a lapse and how it handles a subscription history that includes gaps.

Because of the accelerated expiration and renewal rate, the subscription can expire before the system starts trying to renew the subscription, leaving a small lapse in the subscription period. Such lapses are also possible in production for a variety of reasons—make sure your app handles them correctly.

你能不能试试:

1. 测试更长的订阅期，以便“系统”有更多时间续订(6mo = 30min，1y = 1h)？
2. 运行计时器以持续检查订阅是否在延长的时间后续订？
3. 通过恢复购买来强制续订？

另外，详见here确保您在检查之前等待的时间没有超过订阅期的六倍，因为订阅每天只能为单个测试帐户续订六次。

我正准备开始在我自己的应用程序中实现它，所以如果我遇到同样的情况，我会回信。

更新:

我(在某处)读到，当应用程序在到期前 24 小时后的一段时间内启动时，就会发生自动续订。这可能很难在沙箱中复制。也可以通过刷新应用收据 (>= iOS 7) 或重新验证最近购买的收据 (< iOS 7) 来强制续订。

我已经在 github 上发布了我的实现供您阅读。