iPhone - 如何检索应用内购买的自动续订订阅的持续时间

I'm looking at setting up In App Purchases for an iPhone app. I'm planning on using the new auto-renewable subscription type. However, I want to offer multiple durations for a particular subscription, but can't see how I can retrieve the duration from the SKProduct that is returned in the SKProductsResponse.products array.

我正在寻找为iPhone应用程序设置In App Purchases。我打算使用新的自动更新订阅类型。但是，我想为特定订阅提供多个持续时间，但无法看到我如何从SKProductsResponse.products数组中返回的SKProduct中检索持续时间。

The SKProduct object has price, localizedTitle and localizedDescription. However, if you set up a subscription family with multiple durations the title/description are set once for the family so you cannot include the duration, and the docs explicitly say don't include the duration in the title/description. However, can't see any other field where I can retrieve the duration for displaying in my custom in app store. Either I'm missing something or it isn't going to be available until 4.3?

SKProduct对象具有price，localizedTitle和localizedDescription。但是，如果您设置具有多个持续时间的订阅系列，则为系列设置一次标题/说明，以便您不能包括持续时间，并且文档明确表示不在标题/说明中包含持续时间。但是，看不到任何其他字段，我可以检索在我的自定义应用商店中显示的持续时间。我要么缺少某些东西，要么在4.3之前无法使用？

Pointers greatly appreciated!

指针非常感谢！

3 个解决方案

#1

You need to have some mapping product_id => length somewhere, either in your app or retrived from your app's backend.

你需要在某个地方有一些map_id => length的映射，要么在你的应用程序中，要么从应用程序的后端重新获得。

#2

You can use a specific productIdentifier for each duration (in the code below the productIdentifier for a 1 month subscription is "com.domainname.myapp.sub1month" and for a 7 day duration it is "com.domainname.myapp.sub7day") and search for that in the paymentQueue:

您可以为每个持续时间使用特定的productIdentifier（在productIdentifier下面的代码中，为期1个月的订阅是“com.domainname.myapp.sub1month”，对于7天的持续时间，它是“com.domainname.myapp.sub7day”）和在paymentQueue中搜索：

-(void) paymentQueue:(SKPaymentQueue *)queue updatedTransactions:(NSArray *)transactions{
   for(SKPaymentTransaction *transaction in transactions){
     switch (transaction.transactionState){
        case SKPaymentTransactionStatePurchasing:
            break;
        case SKPaymentTransactionStatePurchased:
            if([transaction.payment.productIdentifier isEqualToString:@"com.domainname.myapp.sub1month"]{
                newSubscriptionEndDate=[transaction.transactionDate timeIntervalSinceReferenceDate]+3600*24*31;
            }
            if([transaction.payment.productIdentifier isEqualToString:@"com.domainname.myapp.sub7day"]  ){
                newSubscriptionEndDate=[transaction.transactionDate timeIntervalSinceReferenceDate]+3600*24*7;
            }
            [[SKPaymentQueue defaultQueue] finishTransaction: transaction];
            break;

#3

iOS 11.2 brings the subscriptionDuration property to SKProduct. I don't think there is a fallback for older iOS though.

iOS 11.2将subscriptionDuration属性带到SKProduct。我不认为旧的iOS会有回退。

https://developer.apple.com/documentation/storekit/skproduct/2936884-subscriptionperiod

#1