在应用程序内购买

Question

I have a peculiar situation. After I pay up for the transaction and before I receive the SKTransactionStatePurchased notification from App store, I close my application. After closing my application, I get this alert "Your purchase was successful". Now, it all happens in such a way that I couldn't call,

[[SKPaymentQueue defaultQueue] finishTransaction: transaction];

and I couldn't unlock the functionality because before processing the updated transaction, my app quits. It doesn't enter the background, I kill it. Now how do I deal with this particular situation. Even if the I try the purchase again, I get this message, This purchase has already been made but not downloaded. May be it's because I am not finishing the transaction. If I try calling restore transaction, I don't get the correct response for this unfinished transaction.

How to deal with this situation? It is different from apple automatically responding to unfinished queries. Here the app store responds and frees itself of it's duties but before I could unlock and deliver the functionality and finish the transaction, my app gets killed may be due to an incoming call or something.

Thanks in Advance

Answer 1

FYI, our app deals only with consumables, so this might not apply to you.

However, in cases where we couldn't successfully finish the transaction, our transactions are usually returned in the state SKPaymentTransactionStatePurchased on restarting the app. Then we simply do the finishTransaction and the universe is in balance once again.