I've faced a crash in my app when using detachNewThreadSelector:@selector() under exception Collection was mutated while being enumerated also there are many of this exception This application is modifying the autolayout engine from a background thread, which can lead to engine corruption and weird crashes. This will cause an exception in a future release.
then I read about to and realize to use dispath_async instead of detachNewThread selector but i'm looking for a logical reason to doing that if anybody can help me with this . furthermore as we known the detachNewThread it'a also thread!!
