Inapppurchase SKProductsRequest Crash my application in ios5 - iphone

Question

my store kit class crash for SKProductsRequest start i am not experienced inapppurchase concept my class working perfectly in iOS 4.3 sdk not iOS 5 sdk. i am not getting error on console and my application crashed before after SKProductsRequest start please can any one help me how to fix this issue here's my code:
#import "StorePurchase.h"
#implementation StorePurchase
#synthesize request = _request;
- (void)loadStore {
if ([SKPaymentQueue canMakePayments]) {
NSLog(#"Parental-controls are disabled");
self.request = [[SKProductsRequest alloc] initWithProductIdentifiers:[NSSet setWithObject:#"com.mycompany.app"]];
self.request.delegate = self;
[self.request start];
}
else {
NSLog(#"Parental-controls are enabled");
}
}
static bool hasAddObserver=NO;
- (void)purchase {
if (!hasAddObserver) {//flag to fix this bug
/*=====================================*/
[[SKPaymentQueue defaultQueue] addTransactionObserver:self];
hasAddObserver=YES;
}
SKMutablePayment *payment = [[SKMutablePayment alloc] init] ;
payment.productIdentifier = #"com.mycompany.app";
payment.quantity = 1;
[[SKPaymentQueue defaultQueue] addPayment:payment];
}
- (void)productsRequest:(SKProductsRequest *)request didReceiveResponse:(SKProductsResponse *)response {
SKProduct *validProduct = nil;
int count = [response.products count];
if (count > 0)
{
validProduct = [response.products objectAtIndex:0];
NSLog(#"Products found,Magic Box!");
[[NSNotificationCenter defaultCenter] postNotificationName:kProductsLoadedNotification object:#"Product Found..!"];
} else if (!validProduct)
{
NSLog(#"No products available");
[[NSNotificationCenter defaultCenter] postNotificationName:kProductsLoadedNotification object:#"Product Not Found..!"];
}
}
- (void)provideContent:(NSString *)productIdentifier {
NSLog(#"Toggling flag for: %#", productIdentifier);
[[NSUserDefaults standardUserDefaults] setBool:TRUE forKey:productIdentifier];
[[NSUserDefaults standardUserDefaults] synchronize];
//[_purchasedProducts addObject:productIdentifier];
[[NSNotificationCenter defaultCenter] postNotificationName:kProductPurchasedNotification object:productIdentifier];
}
- (void)completeTransaction:(SKPaymentTransaction *)transaction {
NSLog(#"completeTransaction...");
//[self recordTransaction: transaction];
[self provideContent: transaction.payment.productIdentifier];
[[SKPaymentQueue defaultQueue] finishTransaction: transaction];
}
- (void)restoreTransaction:(SKPaymentTransaction *)transaction {
NSLog(#"restoreTransaction...");
//[self recordTransaction: transaction];
[self provideContent: transaction.originalTransaction.payment.productIdentifier];
[[SKPaymentQueue defaultQueue] finishTransaction: transaction];
}
- (void)failedTransaction:(SKPaymentTransaction *)transaction {
if (transaction.error.code != SKErrorPaymentCancelled)
{
NSLog(#"Transaction error: %#", transaction.error.localizedDescription);
}
[[NSNotificationCenter defaultCenter] postNotificationName:kProductPurchaseFailedNotification object:transaction];
[[SKPaymentQueue defaultQueue] finishTransaction:transaction];
}
- (void)paymentQueue:(SKPaymentQueue *)queue restoreCompletedTransactionsFailedWithError:(NSError *)error
{
NSLog(#"<><Canceled!><>");
[[NSNotificationCenter defaultCenter] postNotificationName:kProductPurchaseCanceledNotification object:error];
}
- (void)paymentQueue:(SKPaymentQueue *)queue updatedTransactions:(NSArray *)transactions {
for (SKPaymentTransaction *transaction in transactions) {
switch (transaction.transactionState) {
case SKPaymentTransactionStatePurchasing:
// [self completeTransaction:transaction];
break;
case SKPaymentTransactionStatePurchased:
NSLog(#"Purchased");
[self completeTransaction:transaction];
//[[SKPaymentQueue defaultQueue] finishTransaction:transaction];
break;
case SKPaymentTransactionStateRestored:
//[[SKPaymentQueue defaultQueue] finishTransaction:transaction];
NSLog(#"Restored");
[self restoreTransaction:transaction];
break;
case SKPaymentTransactionStateFailed:
if (transaction.error.code != SKErrorPaymentCancelled) {
NSLog(#"An error encounterd");
}
else {
NSLog(#"Cancelled!");
}
//[[SKPaymentQueue defaultQueue] finishTransaction:transaction];
[self failedTransaction:transaction];
break;
}
}
}
i am call the loadStore method after getting the error
SKProductsRequest doesn't call the - (void)productsRequest:(SKProductsRequest *)request didReceiveResponse:(SKProductsResponse *)response method before crash my app!
What's Wrong in my code how to fix!
Thanks in Advance!

Answer 1

i have done code for inapppurchase in my application using this code gets no issues
- (void)loadStore
{
// restarts any purchases if they were interrupted last time the app was open
[[SKPaymentQueue defaultQueue] addTransactionObserver:self];
// get the product description (defined in early sections)
[self requestProUpgradeProductData];
}
- (void)requestProUpgradeProductData
{
NSSet *productIdentifiers = [NSSet setWithObject:kInAppPurchaseProUpgradeProductId];
productsRequest = [[SKProductsRequest alloc] initWithProductIdentifiers:productIdentifiers];
productsRequest.delegate = self;
[productsRequest start];
// we will release the request object in the delegate callback
}
After this it will call this method
- (void)productsRequest:(SKProductsRequest *)request didReceiveResponse:(SKProductsResponse *)response
{
NSArray *products = response.products;
proUpgradeProduct = [products count] == 1 ? [[products objectAtIndex:0] retain] : nil;
if (proUpgradeProduct)
{
NSLog(#"Product title: %#" , proUpgradeProduct.localizedTitle);
NSLog(#"Product description: %#" , proUpgradeProduct.localizedDescription);
NSLog(#"Product price: %#" , proUpgradeProduct.price);
NSLog(#"Product id: %#" , proUpgradeProduct.productIdentifier);
if ([self canMakePurchases]) {
if ([self respondsToSelector:#selector(purchaseProUpgrade)]) {
[self purchaseProUpgrade];
}
}
else {
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:[self languageSelectedStringForKey:#"Error"] message:#"Cannot connect to Store.\n Please Enable the Buying in settings" delegate:self cancelButtonTitle:#"Ok" otherButtonTitles:nil, nil];
[alert show];
[alert release];
}
}
for (NSString *invalidProductId in response.invalidProductIdentifiers)
{
[SVProgressHUD dismiss];
[cancelButton setEnabled:YES];
[buyNowButton setEnabled:YES];
[restoreButton setEnabled:YES];
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Warning" message:#"Error occured" delegate:self cancelButtonTitle:#"Ok" otherButtonTitles:nil, nil];
[alert show];
[alert release];
NSLog(#"Invalid product id: %#" , invalidProductId);
}
// finally release the reqest we alloc/init’ed in requestProUpgradeProductData
[productsRequest release];
[[NSNotificationCenter defaultCenter] postNotificationName:kInAppPurchaseManagerProductsFetchedNotification object:self userInfo:nil];
}
- (void)completeTransaction:(SKPaymentTransaction *)transaction
{
[self recordTransaction:transaction];
[self provideContent:transaction.payment.productIdentifier];
[self finishTransaction:transaction wasSuccessful:YES];
}
- (void)purchaseProUpgrade
{
[SVProgressHUD showInView:self.view status:[self languageSelectedStringForKey:#"Connecting Store"] networkIndicator:YES];
SKPayment *payment = [SKPayment paymentWithProductIdentifier:kInAppPurchaseProUpgradeProductId];
[[SKPaymentQueue defaultQueue] addPayment:payment];
}
- (void)recordTransaction:(SKPaymentTransaction *)transaction
{
if ([transaction.payment.productIdentifier isEqualToString:kInAppPurchaseProUpgradeProductId])
{
// save the transaction receipt to disk
[[NSUserDefaults standardUserDefaults] setValue:transaction.transactionReceipt forKey:#"proUpgradeTransactionReceipt" ];
[[NSUserDefaults standardUserDefaults] synchronize];
}
}
Finally this method
- (void)finishTransaction:(SKPaymentTransaction *)transaction wasSuccessful:(BOOL)wasSuccessful
{
// remove the transaction from the payment queue.
[[SKPaymentQueue defaultQueue] finishTransaction:transaction];
NSDictionary *userInfo = [NSDictionary dictionaryWithObjectsAndKeys:transaction, #"transaction" , nil];
if (wasSuccessful)
{
//Write your transaction complete statement required for your project
}

Answer 2

Follow any of this two Tutorieals:
Tutorial for in app purchase
OR follow RMStore Verification: Here.