// called when the transaction status is updated
public override void UpdatedTransactions(SKPaymentQueue queue, SKPaymentTransaction[] transactions)
{
SystemLog.Debug("UpdatedTransactions - {0}", transactions.Length);
foreach (var transaction in transactions)
{
// ISSUE: The transaction (and any dangling ones) are marked as finished straight away. Apple recommends we finish after app has done
// what it needs to. What happens if user's phone turns off right after finish? The app may not
// have registered purchase and the user will have to re-buy again!
//
// Solution is to to return a scope in the "PurchaseMethod" that
// finishes the transaction on dispose
//
// using(inAppPurchaseManager.Purchase("productid")) {
// UpgradeApp();
// } <-- dispose will finish transaction
//
if (transaction.TransactionState != SKPaymentTransactionState.Purchasing)
{
SKPaymentQueue.DefaultQueue.FinishTransaction(transaction);
}
}
if (transactions.Any(p => p.TransactionState.IsIn(SKPaymentTransactionState.Purchased, SKPaymentTransactionState.Restored)))
{
var paymentTransaction = transactions.First(t => t.TransactionState.IsIn(SKPaymentTransactionState.Purchased, SKPaymentTransactionState.Restored));
switch (paymentTransaction.TransactionState)
{
case SKPaymentTransactionState.Purchased:
SystemLog.Info("PURCHASED");
_result =
new PurchaseResult {
AppStoreProductID = paymentTransaction.Payment.ProductIdentifier,
Result = TransactionResult.Purchased,
PurchaseDate = paymentTransaction.TransactionDate.ToNullableDateTime()
};
break;
case SKPaymentTransactionState.Restored:
SystemLog.Info("RESTORED");
_result =
new PurchaseResult {
AppStoreProductID = paymentTransaction.Payment.ProductIdentifier,
Result = TransactionResult.Restored,
PurchaseDate = paymentTransaction.OriginalTransaction.TransactionDate.ToNullableDateTime()
};
break;
}
_waiter.Set();
}
else if (transactions.All(t => t.TransactionState == SKPaymentTransactionState.Failed))
{
SystemLog.Info("FAILED");
var paymentTransaction = transactions.First(t => t.TransactionState == SKPaymentTransactionState.Failed);
SystemLog.Info("WITH ERROR {0}", paymentTransaction.Error);
_result =
new PurchaseResult {
AppStoreProductID = paymentTransaction.Payment.ProductIdentifier,
Result = TransactionResult.Failed,
Error = paymentTransaction.Error,
PurchaseDate = null
};
_waiter.Set();
}
else
{
// still waiting for response (this was just dangling response from prior requests)
}
}
public ProductPurchaser()
{
_waiter = new ManualResetEventSlim(false);
_result = null;
}