NSURLSessionDataTask not executing the completion handler block

Question

I am trying to pull some data from my local node server. The server is getting the get request and logging it, but for some reason my iOS app will not execute any of the cod

Answer 1

NSURLSessionDataTask runs in a background thread. To update anything in the user interface such as labels, buttons, table views, etc, you must do so on the main thread. If you want to update the label text from the completionHandler block then you need to update the label in the main thread like so:

dispatch_sync(dispatch_get_main_queue(), ^{
  nameLabel.text = @"yay!";
});