Warn on calls to UIKit from background threads

Question

iOS\'s UIKit is not thread-safe, let us call this fact well known. I know the rule, I\'m careful, but I still get bitten - and every now and then the resulting crash is far

Answer 1

This code (just add to project and compile this file without ARC) causes assertions on UIKit access outside of the main thread: https://gist.github.com/steipete/5664345

I've just used it to pickup numerous UIKit/main thread issues in some code I've just picked up.