iOS6 - 从苹果服务器下载的应用内购买

Question

I'm able to successfully make the inapp purchase and download the content from Apple server and use it.
My In app purchase content is non-consumable. And so I'm providing "Restore" button in my app
Now when user presses "Restore" button, I'm calling the method:

restoreCompletedTransactions

But here, I'm not getting the call to delegate method:

- (void)paymentQueue:(SKPaymentQueue *)queue updatedTransactions:(NSArray *)transactions

So that I can identify the transaction object and start downloading the content again from apple server. Can some one help me in writing "restore" option?

As per apple, it says:

// Asynchronous. Will add completed transactions for the current user back to the queue to be re-completed. User will be asked to authenticate. Observers will receive 0 or more -paymentQueue:updatedTransactions:, followed by either -paymentQueueRestoreCompletedTransactionsFinished: on success or -paymentQueue:restoreCompletedTransactionsFailedWithError: on failure. In the case of partial success, some transactions may still be delivered.

But for me, I'm not getting the call "paymentQueue:updatedTransactions" at all. I'm just getting the call "paymentQueueRestoreCompletedTransactionsFinished:"

Answer 1

You probably do not observe transaction queue. Make sure you have

[[SKPaymentQueue defaultQueue] addTransactionObserver:self];

somewhere before you call restoreCompletedTransactions method