In-app purchase: request products randomly, get some valid product and some invalid products?

Question

I use the in-app purchase feature. Today I get a strange problem.

I am trying to get a list of products SKProductsRequest. The problem is that sometimes I received invalidProductIdentifiers, but sometimes I received valid products.

SKProductsRequest *productsRequest = [[SKProductsRequest alloc] initWithProductIdentifiers:[NSSet setWithObjects:objects]]; productsRequest.delegate = self; [productsRequest start];

Example: I send a request for information about 30 products: sometimes 10 products are obtained, sometimes 0, sometimes 30, ... So strange.

In the past, it works well. But one day a problem arises.

I tried (searched and asked my colleagues) a day, but still can not understand why.

Please, help.

Thank.

Answer 1

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, Apple.

Answer 2

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- (void)productsRequest:(SKProductsRequest )request didReceiveResponse:(SKProductsResponse )response {

for (NSString *invalidProductId in response.invalidProductIdentifiers)
    {
        NSLog(@"Invalid product id: %@" , invalidProductId);
    }
}

, , http://troybrant.net/blog/2010/01/invalid-product-ids/

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