In-App Purchases Restore

Question

I'm trying to do in-app purchases and everything works fine except Restore. Below is the code I have written:

func paymentQueueRestoreCompletedTransactionsFinished(queue:SKPaymentQueue!)
{
    for transaction:AnyObject in queue.transactions
    {
        let trans : SKPaymentTransaction = transaction as SKPaymentTransaction
        var identifier : NSString = trans.payment.productIdentifier
        println(identifier)
    }
}

The problem that I face here is I'm not getting the purchased identifier here. I think I have miswritten the code.

Answer 1

Riyazul, you need to look at the original transaction when you are restoring purchases.

The code you should need is:

var identifier : NSString = trans.originalTransaction.payment.productIdentifier

Let me know if it's still not working.

Answer 2

Add below two lines of code on your button click action

SKPaymentQueue.default().restoreCompletedTransactions()
SKPaymentQueue.defaultQueue().addTransactionObserver(self)

Edit - for Swift 3:

SKPaymentQueue.default().add(self)
SKPaymentQueue.default().restoreCompletedTransactions()