问题描述
我在iOS应用中的应用购买中使用了可再生订阅.当用户尝试购买他们已经为消息付费的订阅时，会从iTunes中显示您当前已订阅此消息".
I am using renewable subscriptions in app purchases in an iOS app.When a user attempts to purchase a subscription that they already have paid for a message is displayed from iTunes "You're currently subscribed to this".
如何检测何时发生此事件，以便我可以处理交易并授予对我的应用的访问权限.
How I can detect when this event has occurred so that I can process the transaction and grant access to my app.
在观察者的paymentQueue:updatedTransactions:方法中，以SKPaymentTransactionStateFailed的形式通过.如何区分这种类型的故障和其他故障，例如用户按下取消"按钮?
In the paymentQueue:updatedTransactions: method of the observer it is coming through as a SKPaymentTransactionStateFailed. How do I distinguish between this type of failure and other failures such as the user pressing the cancel buttons?
我是否提交返回的交易，还是需要致电restorePreviousTransactions.
Do I submit the transaction that is returned or do I need to call restorePreviousTransactions.
在Apple文档中指出:如果用户尝试购买他们已经购买的非消耗性产品或可再生订阅，则您的应用程序会收到该商品的常规交易，而不是还原交易.但是，用户不会对该产品再次收费.您的应用程序应将这些交易与原始交易相同."
In the Apple documents it states "If the user attempts to purchase a non-consumable product or a renewable subscription they have already purchased, your application receives a regular transaction for that item, not a restore transaction. However, the user is not charged again for that product. Your application should treat these transactions identically to those of the original transaction."
推荐答案
Q: How I can detect when this event (currently subscribed) has occurred so that I can process the transaction and grant access to my app.
您通过与Apple的验证来检测订阅是否存在(我使用php网站代码执行此操作)，返回状态码"响应，并可以验证其是否为代码21006(订阅已过期)，或者其他(我认为除0和21006之外的其他都是实际错误).
You detect when the subscription exists via validation with Apple (I use php website code to do this), you get a "status code" response back, and can verify whether it is a code 21006 (subscription is expired), or others (I consider anything other than 0 and 21006 to be an actual error).
我做事的方式是将交易明细存储在我存储在documents目录中的PLIST文件中.
The way I do things is I store the transaction details inside a PLIST file which I store in the documents directory.
您可以在PLIST中添加其他字段，例如expiryDates，布尔标志等.
You could add extra fields to the PLIST such as expiryDates, boolean flags, etc.
通过这种方式，您可以获得收据的副本，尽管您应该始终对其进行验证，因为它可能已过期.
This way you have a copy of the receipt, although you should always validate it because it might have expired.
您可以在updatedTransactions方法中使用switch语句来确定不同类型的响应.
You use a switch statement in the updatedTransactions method to determine the different types of responses.
示例
-(void)paymentQueue:(SKPaymentQueue *)queue restoreCompletedTransactionsFailedWithError:(NSError *)error
{
NSString *message = [NSString stringWithFormat:@"Transaction failed with error - %@", error.localizedDescription];
NSLog(@"Error - %@", message);
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Error"
message:message
delegate:nil
cancelButtonTitle:@"OK"
otherButtonTitles:nil];
[alertView show];
[alertView release];
}
-(void)paymentQueue:(SKPaymentQueue *)queue updatedTransactions:(NSArray *)transactions
{
NSLog(@"updatedTransactions");
for (SKPaymentTransaction *transaction in transactions)
{
switch (transaction.transactionState)
{
case SKPaymentTransactionStatePurchasing:
// take action whilst processing payment
break;
case SKPaymentTransactionStatePurchased:
// take action when feature is purchased
break;
case SKPaymentTransactionStateRestored:
// take action to restore the app as if it was purchased
break;
case SKPaymentTransactionStateFailed:
if (transaction.error.code != SKErrorPaymentCancelled)
{
// Do something with the error
} // end if
break;
default:
break;
} // end switch
} // next
TransactionStateFailed处理失败，尽管我没有为取消编写代码，因为我没有理由在我的应用中这样做.
The TransactionStateFailed handles the failures, although I do not code for cancellation as there is no reason for me to do so in my app.
我相信StoreKit可以使用finishTransaction方法和restorePreviousTransaction方法在内部进行处理
I believe StoreKit handles this internally with finishTransaction method and restorePreviousTransaction methods
即
[[SKPaymentQueue defaultQueue] finishTransaction: transaction];
完成交易
我希望这对您有帮助
这篇关于已经在StoreKit中购买了订阅的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！