Issue with transactionreceipt deprecated in iOS 7 warning - iphone

Question

I am going to update my application for iOS 7 and I am using IAP , but xcode 5 give me this this error :
transactionreceipt is deprecated : first deprecated in iOS 7
here is my code :
// saves a record of the transaction by storing the receipt to disk
- (void)recordTransaction:(SKPaymentTransaction *)transaction
{
if ([transaction.payment.productIdentifier isEqualToString:kProductIdentifier])
{
// save the transaction receipt to disk
[[NSUserDefaults standardUserDefaults] setValue:transaction.transactionReceipt forKey:#"proUpgradeTransactionReceipt"];
[[NSUserDefaults standardUserDefaults] synchronize];
}
}
how can I fix this issue ?
//EDITED :
I used my AndreyMan's answer but nothing happened and compiler gave me APP:requestProductData END message
- (void)requestProductData
{
[NSThread sleepForTimeInterval:2];
NSLog(#"IN-APP:requestProductData");
SKProductsRequest *request= [[SKProductsRequest alloc]
initWithProductIdentifiers: [NSSet setWithObject: #"com.compony.product"]];
request.delegate = self;
[request start];
NSLog(#"IN-APP:requestProductData END");
}
and then gives me these messages :
2013-10-08 14:26:21.400 Arta[1138:60b] Purchasing... 2013-10-08 14:26:28.380 Arta[1138:60b] Unknown Reason. 2013-10-08 14:26:28.383
Arta[1138:60b] Purchase faild...
- (void)paymentQueue:(SKPaymentQueue *)queue updatedTransactions:(NSArray *)transactions
{
for (SKPaymentTransaction *transaction in transactions)
{
switch (transaction.transactionState)
{
case SKPaymentTransactionStatePurchased:
[self completeTransaction:transaction];
NSLog(#"Purchase compelete...");
break;
case SKPaymentTransactionStateFailed:
[self failedTransaction:transaction];
NSLog(#"Purchase faild...");
break;
case SKPaymentTransactionStateRestored:
[self restoreTransaction:transaction];
NSLog(#"Restore compelete...");
break;
case SKPaymentTransactionStatePurchasing:
NSLog(#"Purchasing...");
break;
default:
break;
}
}
}
- (void)failedTransaction:(SKPaymentTransaction *)transaction
{
if (transaction.error.code != SKErrorPaymentCancelled)
{
// error!
[self finishTransaction:transaction wasSuccessful:NO];
if (transaction.error.code == SKErrorClientInvalid) {
}
else if (transaction.error.code == SKErrorPaymentInvalid) {
}
else if (transaction.error.code == SKErrorPaymentNotAllowed) {
}
else if (transaction.error.code == SKErrorPaymentCancelled) {
// [self showAlert:#"In-App Purchase" withMessage:#"This device is not allowed to make the payment."];
NSLog(#"User Cancellation.");
}
else {
// SKErrorUnknown
NSLog(#"Unknown Reason.");
}
}
else {
// this is fine, the user just cancelled, so don’t notify
[[SKPaymentQueue defaultQueue] finishTransaction:transaction];
}
}

Answer 1

Something like:
NSURL *receiptUrl = [[NSBundle mainBundle] appStoreReceiptURL];
NSData *receipt;
receipt = [NSData dataWithContentsOfURL:receiptUrl];