in app purchase

-(void)buyaudio
{
/*  SKProductsRequest *request= [[SKProductsRequest alloc]
                                 initWithProductIdentifiers: [NSSet setWithObject: @"com.metatagg.3310identifier"]];
    request.delegate = self;
    [request start]; */

   NSLog(@"connect itune");


}
- (void)productsRequest:(SKProductsRequest *)request didReceiveResponse:(SKProductsResponse *)response
{
    [[SKPaymentQueue defaultQueue] addTransactionObserver:self];

    NSArray *myProduct = response.products;

    NSLog(@"%@",[[myProduct objectAtIndex:0] productIdentifier]);

    //Since only one product, we do not need to choose from the array. Proceed directly to payment.

    SKPayment *newPayment = [SKPayment paymentWithProduct:[myProduct objectAtIndex:0]];


    [[SKPaymentQueue defaultQueue] addPayment:newPayment];

}

- (void)paymentQueue:(SKPaymentQueue *)queue updatedTransactions:(NSArray *)transactions
{
    for (SKPaymentTransaction *transaction in transactions)
    {
        switch (transaction.transactionState)
        {
            case SKPaymentTransactionStatePurchased:
                [self completeTransaction:transaction];
                break;
            case SKPaymentTransactionStateFailed:
                [self failedTransaction:transaction];
                break;
            case SKPaymentTransactionStateRestored:
                [self restoreTransaction:transaction];
            default:
                break;
        }
    }
}
- (void) restoreTransaction: (SKPaymentTransaction *)transaction
{
    NSLog(@"Transaction Restored");

    [[SKPaymentQueue defaultQueue] finishTransaction: transaction];
}

- (void) failedTransaction: (SKPaymentTransaction *)transaction
{

    if (transaction.error.code != SKErrorPaymentCancelled)
    {
        // Display an error here.
        UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Purchase Unsuccessful"
                                                        message:@"Your purchase failed. Please try again."
                                                       delegate:self
                                              cancelButtonTitle:@"OK"
                                              otherButtonTitles:nil];
        [alert show];

    }

    // Finally, remove the transaction from the payment queue.
    [[SKPaymentQueue defaultQueue] finishTransaction: transaction];
}