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POiPhone In App Purchase issue
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copied!<p>I use In App Purchase in my application, but I have problem when I'm testing that. I have four consumable products. Information about that products I show in <code>tableview</code>. Sometimes when I click a button to buy some product I get a transaction state <code>SKPaymentTransactionStateFailed</code> in <code>updatedTransaction</code> function but <code>transaction.error localizedFailureReason</code> is always <code>null</code>. Once I noticed that one transaction was updated two times (in <code>updatedTransaction</code> function transaction with the same <code>transactionIdentifier</code> comes, state of transaction is <code>SKPaymentTransactionStatePurchased</code>) - is then that product two times purchased?.</p> <p>So I have no idea where is the problem. Please help me.</p> <p>I use that class to manage In App Purchase:</p> <pre><code>@implementation InAppPurchaseManager @synthesize upgradeProducts; @synthesize productsRequest; @synthesize delegate; - (id) init { self = [super init]; if (!self) return nil; if ([SKPaymentQueue canMakePayments]) { [self loadStore]; [[SKPaymentQueue defaultQueue] addTransactionObserver:self]; } upgradeProducts = [[NSMutableArray alloc] init]; delegate = nil; return self; } + (InAppPurchaseManager *) sharedInstance { static InAppPurchaseManager *myInstance = nil; if (nil == myInstance) { myInstance = [[[self class] alloc] init]; } return myInstance; } - (void) loadStore { NSSet *productsIdentifiers = [[NSSet alloc] initWithObjects:PRODUCT_1_ID, PRODUCT_2_ID, PRODUCT_3_ID, PRODUCT_4_ID, nil]; [self requestUpgradeProductsData:productsIdentifiers]; [productsIdentifiers release]; } - (void) requestUpgradeProductsData:(NSSet *) productIdentifiers { productsRequest = [[SKProductsRequest alloc] initWithProductIdentifiers:productIdentifiers]; productsRequest.delegate = self; [productsRequest start]; } - (void) productsRequest:(SKProductsRequest *) request didReceiveResponse:(SKProductsResponse *) response { [upgradeProducts removeAllObjects]; for (int i = 0; i < [response.products count]; i++) { SKProduct *product = [response.products objectAtIndex:i]; UpgradeProduct *upgradeProduct = [[UpgradeProduct alloc] initWithProductID:product.productIdentifier]; upgradeProduct.title = product.localizedTitle; upgradeProduct.description = product.localizedDescription; NSNumberFormatter *numberFormatter = [[NSNumberFormatter alloc] init]; [numberFormatter setFormatterBehavior:NSNumberFormatterBehavior10_4]; [numberFormatter setNumberStyle:NSNumberFormatterCurrencyStyle]; [numberFormatter setLocale:product.priceLocale]; NSString *price = [numberFormatter stringFromNumber:product.price]; [numberFormatter release]; upgradeProduct.price = price; [self.upgradeProducts addObject:upgradeProduct]; [upgradeProduct release]; } [productsRequest release]; if ([self.delegate respondsToSelector:@selector(didLoadStore:)]) [self.delegate didLoadStore:self.upgradeProducts]; } + (BOOL) canMakePurchases { if ([SKPaymentQueue canMakePayments]) return YES; else { [Global showAlertViewWithTitle:NSLocalizedString(@"Payment Error", @"Payment Error Alert Title") message:NSLocalizedString(@"You are not authorized to purchase from AppStore", @"Payment Error Alert Text when user cannot make payments from store")]; return NO; } } - (void) purchaseUpgrade:(NSString *) productIdentifier { if ([InAppPurchaseManager canMakePurchases]) { SKPayment *payment = [SKPayment paymentWithProductIdentifier:productIdentifier]; [[SKPaymentQueue defaultQueue] addPayment:payment]; } } - (void) recordTransaction:(SKPaymentTransaction *) transaction { [[NSUserDefaults standardUserDefaults] setValue:transaction.transactionReceipt forKey:@"upgradeTransactionReceipt" ]; [[NSUserDefaults standardUserDefaults] synchronize]; } - (void) finishTransaction:(SKPaymentTransaction *) transaction { [self paymentSucceeded:transaction]; [[SKPaymentQueue defaultQueue] finishTransaction:transaction]; } - (void) paymentSucceeded:(SKPaymentTransaction *) transaction { // provide content here if ([self.delegate respondsToSelector:@selector(didFinishPaymentTransaction)]) [self.delegate didFinishPaymentTransaction]; } - (void) completeTransaction:(SKPaymentTransaction *) transaction { [self recordTransaction:transaction]; [self finishTransaction:transaction]; } - (void) restoreTransaction:(SKPaymentTransaction *) transaction { [self recordTransaction:transaction.originalTransaction]; [self finishTransaction:transaction]; } - (void) failedTransaction:(SKPaymentTransaction *) transaction { if (transaction.error.code != SKErrorPaymentCancelled) { NSMutableString *messageToBeShown = [[NSMutableString alloc] init]; if ([transaction.error localizedFailureReason] != nil) { [messageToBeShown setString:[NSString stringWithFormat:@"%@ %@", NSLocalizedString(@"Reason:", @"Reason Text in alert when payment transaction failed"), [transaction.error localizedFailureReason]]]; if ([transaction.error localizedRecoverySuggestion] != nil) [messageToBeShown appendFormat:@", %@ %@", NSLocalizedString(@"You can try:", @"Text for sugesstion in alert when payment transaction failed"), [transaction.error localizedRecoverySuggestion]]; } [Global showAlertViewWithTitle:NSLocalizedString(@"Unable to complete your purchase", @"Payment transaction failed alert title") message:messageToBeShown]; [messageToBeShown release]; if ([self.delegate respondsToSelector:@selector(didFailedPaymentTransaction)]) [self.delegate didFailedPaymentTransaction]; } else { if ([self.delegate respondsToSelector:@selector(didCancelPaymentTransaction)]) [self.delegate didCancelPaymentTransaction]; } [[SKPaymentQueue defaultQueue] finishTransaction:transaction]; } - (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]; break; default: break; } } } - (void) request:(SKRequest *) request didFailWithError:(NSError *) error { [Global showAlertViewWithTitle:NSLocalizedString(@"Payment Error", @"Payment Error Alert Title") message:[NSString stringWithFormat:@"%@, %@", NSLocalizedString(@"Could not contact App Store properly", @"Alert text when request did fail"), [error localizedDescription]]]; } - (void) dealloc { [[SKPaymentQueue defaultQueue] removeTransactionObserver:self]; [upgradeProducts release]; if (productsRequest) productsRequest = nil; [super dealloc]; } @end </code></pre> <p>In AppDelegate in function didFinishLaunchingWithOptions I make that:</p> <pre><code>[InAppPurchaseManager sharedInstance]; </code></pre> <p>In Purchase View when I click a button I make:</p> <pre><code>UpgradeProduct *selectedProduct = [self.faxProducts objectAtIndex:[purchaseButton.identifier intValue]]; if (selectedProduct) { [[InAppPurchaseManager sharedInstance] purchaseUpgrade:selectedProduct.productID]; } </code></pre>

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