问题
The SKProductsRequestDelegate has one single method:
- (void)productsRequest:(SKProductsRequest *)request didReceiveResponse:(SKProductsResponse *)response
Usually, I find these sorts of delegates will have several methods for handling multiple cases, rather than just success. For example:
-(void) connection:(NSURLConnection *)connection didFailWithError:(NSError *) error
How can I check if this code fails for some reason, eg. the user is offline?
SKProductsRequest *productsRequest = [[SKProductsRequest alloc] ... ];
productsRequest.delegate = self;
[productsRequest start];
回答1:
SKProductsRequestDelegate conforms to the SKRequestDelegate protocol.
There you find
- (void)request:(SKRequest *)request didFailWithError:(NSError *)error
- (void)requestDidFinish:(SKRequest *)request
来源：https://stackoverflow.com/questions/3474384/skproductsrequestdelegate-failure