private void PurchaseProduct(SKProduct product, int quantity)
{
if (product == null)
throw new ArgumentNullException("InAppPurchaseManager: Product is not valid.");
try
{
if (observer == null)
{
observer = new PaymentTransactionObserver(this);
SKPaymentQueue.DefaultQueue.AddTransactionObserver(observer);
}
if (quantity > 1)
{
SKMutablePayment payment = SKMutablePayment.PaymentWithProduct(product);
payment.Quantity = quantity;
SKPaymentQueue.DefaultQueue.AddPayment(payment);
}
else
{
SKPayment payment = SKPayment.PaymentWithProduct(product);
SKPaymentQueue.DefaultQueue.AddPayment(payment);
}
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
OnPurchaseFailed(new InAppPurchaseException("Error executing in-app purchase.", 0, ex));
}
}
public override void RestorePurshases()
{
if (observer == null)
{
observer = new PaymentTransactionObserver(this);
SKPaymentQueue.DefaultQueue.AddTransactionObserver(observer);
}
SKPaymentQueue.DefaultQueue.RestoreCompletedTransactions();
}
