Cocos2d animation resume - cocos2d-iphone

Question

I've added iAP in cocos2d following the ray tutorials (but changed a few things to fit cocos2d) but after I make a transaction the console log says 2013-08-19 16:32:12.626 Game[2483:907] Buying *product* ...
2013-08-19 16:32:13.208 Game[2483:907] cocos2d: animation stopped
2013-08-19 16:32:16.690 Game[2483:907] completeTransaction...
2013-08-19 16:32:16.725 Game[2483:907] User defaults for *product* are YES
So I know the transaction works, but the game never resumes it just freezes. Is there a way to resume the game after the transaction? [[CCDirector sharedDirector]resume] doesn't work so I think it may have to do with UIAlert View. Any help? Here is my iAPHelper.mm:
#import "IAPHelper.h"
#import <StoreKit/StoreKit.h>
NSString *const IAPHelperProductPurchasedNotification
#"IAPHelperProductPurchasedNotification";
#interface IAPHelper () <SKProductsRequestDelegate, SKPaymentTransactionObserver>
#end
#implementation IAPHelper {
SKProductsRequest * _productsRequest;
RequestProductsCompletionHandler _completionHandler;
NSSet * _productIdentifiers;
NSMutableSet * _purchasedProductIdentifiers;
}
- (id)initWithProductIdentifiers:(NSSet *)productIdentifiers {
if ((self = [super init])) {
// Store product identifiers
_productIdentifiers = productIdentifiers;
[[SKPaymentQueue defaultQueue] addTransactionObserver:self];
// Check for previously purchased products
_purchasedProductIdentifiers = [NSMutableSet set];
for (NSString * productIdentifier in _productIdentifiers) {
BOOL productPurchased = [[NSUserDefaults standardUserDefaults] boolForKey:productIdentifier];
if (productPurchased) {
[_purchasedProductIdentifiers addObject:productIdentifier];
NSLog(#"Previously purchased: %#", productIdentifier);
} else {
NSLog(#"Not purchased: %#", productIdentifier);
}
}
}
return self;
}
- (void)requestProductsWithCompletionHandler:(RequestProductsCompletionHandler)completionHandler {
_completionHandler = [completionHandler copy];
_productsRequest = [[SKProductsRequest alloc] initWithProductIdentifiers:_productIdentifiers];
_productsRequest.delegate = self;
[_productsRequest start];
}
#pragma mark - SKProductsRequestDelegate
- (void)productsRequest:(SKProductsRequest *)request didReceiveResponse:(SKProductsResponse *)response {
NSLog(#"Loaded list of products...");
_productsRequest = nil;
NSArray * skProducts = response.products;
for (SKProduct * skProduct in skProducts) {
NSLog(#"Found product: %# %# %0.2f",
skProduct.productIdentifier,
skProduct.localizedTitle,
skProduct.price.floatValue);
}
_completionHandler(YES, skProducts);
_completionHandler = nil;
}
- (void)request:(SKRequest *)request didFailWithError:(NSError *)error {
NSLog(#"Failed to load list of products.");
_productsRequest = nil;
_completionHandler(NO, nil);
_completionHandler = nil;
}
- (BOOL)productPurchased:(NSString *)productIdentifier {
return [_purchasedProductIdentifiers containsObject:productIdentifier];
}
- (void)buyProduct:(SKProduct *)product {
NSLog(#"Buying %#...", product.productIdentifier);
SKPayment * payment = [SKPayment paymentWithProduct:product];
[[SKPaymentQueue defaultQueue] addPayment:payment];
}
- (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)completeTransaction:(SKPaymentTransaction *)transaction {
NSLog(#"completeTransaction...");
[self provideContentForProductIdentifier:transaction.payment.productIdentifier];
[[SKPaymentQueue defaultQueue] finishTransaction:transaction];
}
- (void)restoreTransaction:(SKPaymentTransaction *)transaction {
NSLog(#"restoreTransaction...");
[self provideContentForProductIdentifier:transaction.originalTransaction.payment.productIdentifier];
[[SKPaymentQueue defaultQueue] finishTransaction:transaction];
}
- (void)failedTransaction:(SKPaymentTransaction *)transaction {
NSLog(#"failedTransaction...");
if (transaction.error.code != SKErrorPaymentCancelled)
{
NSLog(#"Transaction error: %#", transaction.error.localizedDescription);
}
[[SKPaymentQueue defaultQueue] finishTransaction: transaction];
}
- (void)provideContentForProductIdentifier:(NSString *)productIdentifier {
[_purchasedProductIdentifiers addObject:productIdentifier];
[[NSUserDefaults standardUserDefaults] setBool:YES forKey:productIdentifier];
[[NSUserDefaults standardUserDefaults] synchronize];
[[NSNotificationCenter defaultCenter] postNotificationName:IAPHelperProductPurchasedNotification object:productIdentifier userInfo:nil];
NSLog(#"User defaults for %# are YES", productIdentifier);
}
- (void)restoreCompletedTransactions {
[[SKPaymentQueue defaultQueue] restoreCompletedTransactions];
}
#end

Answer 1

Before you popup your alert view try running...
[[CCDirector sharedDirector] stopAnimation];
When you get a response back from the user in the alertview callback or transaction completion run...
[[CCDirector sharedDirector] startAnimation];
Cocos doesn't often play well with UIKit/Cocoa callbacks so you need to pause rendering while they do their thing. We have similar behaviour for when the app goes into background/foreground in the app delegate...
-(void) applicationDidEnterBackground:(UIApplication*)application {
[[CCDirector sharedDirector] stopAnimation];
}
-(void) applicationWillEnterForeground:(UIApplication *)application {
[[CCDirector sharedDirector] startAnimation];
}
-(void)applicationDidBecomeActive:(UIApplication *)application {
[[CCDirector sharedDirector] resume];
}
Seems we use resume inside the applicationDidBecomeActive. Can't recall the full logic there but that has seemed to work for a bunch of our projects.