Behaviour for significant change location API when terminated/suspended?

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Since I asked this question, I have done a fair bit of testing (mostly on the train between home and work) and have confirmed that the behaviour for suspended apps is as I suspected at the end of the question.

That is, your suspended app is woken up, you don’t receive any callbacks on your app delegate, instead you receive your location updates through your existing CLLocationManagerDelegate. You can detect that you are running in the background by checking the applicationState, and do limited work for the case where you are woken from a suspended state to do location processing.

[UIApplication sharedApplication].applicationState == UIApplicationStateBackground

I came to this conclusion with a location test harness that you are welcome to download and try out. It is a pretty simple app that allows you to turn on significant change and GPS change APIs through the UI and log all the responses that you get back.

N.B. Point six in the previous answer is not correct. Freeze dried suspended apps do receive CLLocationManagerDelegate callbacks when they are woken up from a suspended state.

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