NSURLSessionDataTask dataTaskWithURL completion handler not getting called

Question

I have been learning Objective C lately, and I decided to try connections.

Everything was great with NSURLConnection, until I discovered it was outdated, and tried t

Answer 1

Check the location of your code.

Although it is not stated in OP where the code was located, I found, after much looking and many iterations, that putting sample code in -viewDidLoad never executed the completion handler. Moving the code into

- (void)viewWillAppear:(BOOL)animated { }

solved the never completing task issue. (I still don't understand why though.)