Wait until multiple networking requests have all executed - including their completion blocks

Question

I have multiple operations (they\'re AFNetworking requests) with completion blocks that takes some time to execute, and a Core Data object that needs to be saved at the end

Answer 1

AFNetworking has designed method for this kind of operations, which abstracts from GCD:

-enqueueBatchOfHTTPRequestOperationsWithRequests:progressBlock:completionBlock:

-enqueueBatchOfHTTPRequestOperations:progressBlock:completionBlock:

Take a look at FAQ