MKMapView regionDidChangeAnimated not always called!

Question

This is frustrating me!!!

It will be called most of the time but then it stops responding to the pinches. It will be called on a screen rotate and a double tap. No

Answer 1

I think this problem may have something to do with multi-threading.

I had the same problem this morning. I use a gesture recognizer to capture long press event and then add a pin to the mapview. If works well but after a few rounds, the region did change method stop being called.

I tried a few solutions here but none works. Then I recalled some other issue I had before with multi-threading nature of actions. So I try to moved the code that controls the mapview in long press action to a block that runs in main thread. And the problem is solved.