location manager was created on a dispatch queue

Question

what does this message mean?

NOTICE,A location manager (0xe86bdf0) was created on a dispatch queue executing on a thread other than the main thread. It is the devel

Answer 1

You must create the CLLocationManager on a thread with an active run loop, such as the main thread. You should not create it on a background thread. See CLLocationManager Class Reference for more information:

(Configuration of your location manager object must always occur on a thread with an active run loop, such as your application’s main thread.)

If you're interested in what exactly a run loop is, see Run Loops for further information.