2分钟后如何停止定位服务而没有任何重大动作？

Question

My app is in the background . I would like to stop (or pause) the locationupdate after 2.5 min detecting that the user didn't move significantly and start to listen instead startMonitoringSignificantLocationChanges . Their is an option: PausesLocationUpdatesAutomatically but the problem is that this option is a little obscure. We don't really know when the system will pause the GPS (seam only after 20 min) and strangely, at the opposite what the doc say, the system will resume himself the locationUpdate (at least when you will put the app in foreground).

So i have another option: DistanceFilter . I can set it to none and the system will wake up my app every 5 seconds with new location (same as before if user didn't move). The problem wake up the app every 5 second seam a little aggressive for the battery (my app will be wake up more than 30 times before i reach the 2.5 min to stop the location services). also it's a disaster when user move not very fast, my app will be constantly wake up every 5 second, and i need only an accuracy of 100 meters :(

So this is my problem, how to stop the locationservices after 2.5 min when their is no significant move ?

Answer 1

so from Apple documentation you got in AppDelegate this method

func applicationDidEnterBackground(_ application: UIApplication)

I will call this PausesLocationUpdatesAutomatically and set a timer after 2min to turn it off.

anyhow also another solution would be to get the current location and set a timer to stop locating after 2min in meantime i will still receive location and check is it more 100m and if it was more i will reset the timer and continue