ios - In app purchases restore Button

Question

I have implemented in app purchases into my app update for the first time, only too wait 3 weeks and have it rejected for the following reason:

We found that your app offers In-App Purchase/s that can be restored but it does not include a "Restore" feature to allow users to restore the previously purchased In-App Purchase/s. To restore previously purchased In-App Purchase products, it would be appropriate to provide a "Restore" button and initiate the restore process when the "Restore" button is tapped.

Now I was thinking of adding a navbar button to the right (top) of my table where the app purchases can be seen/tapped and adding the following code that will be linked to the button:

 [[SKPaymentQueue defaultQueue]   restoreCompletedTransactions];

Can someone verify that this is correct and most likely all that is needed? Would like this to pass successfully this time. Thanks in advance!

Answer 1

I use a variation of this:

//inside of an IBaction
[[SKPaymentQueue defaultQueue] addTransactionObserver:self];
[[SKPaymentQueue defaultQueue]restoreCompletedTransactions];


// Then this is called
- (void)paymentQueueRestoreCompletedTransactionsFinished:(SKPaymentQueue *)queue {
    NSLog(@"%@",queue );
    NSLog(@"Restored Transactions are once again in Queue for purchasing %@",[queue transactions]);  

    NSMutableArray *purchasedItemIDs = [[NSMutableArray alloc] init];
    NSLog(@"received restored transactions: %i", queue.transactions.count);

    for (SKPaymentTransaction *transaction in queue.transactions) {
        NSString *productID = transaction.payment.productIdentifier;
        [purchasedItemIDs addObject:productID];
        NSLog (@"product id is %@" , productID);
        // here put an if/then statement to write files based on previously purchased items
        // example if ([productID isEqualToString: @"youruniqueproductidentifier]){write files} else { nslog sorry}
    }  
}

Sorry, I'm on my iPad if this makes no sense.