Weird locations from CLLocationManager in iOS9

问题

I have developed a walk app that can record distance, on iOS7, iOS8, the distance is mostly fine although sometimes not accurate, but on iOS9.0, the distance often too large, so I check

- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray<CLLocation *> *)

Locations method, and find some time get locations like this: A、B、C, but coordinate of C is equal to A, which i think is weird

I find startUpdatingLocation called every seconds, after get rid of it , it gets better, but still happens

here is the demo source code

回答1:

For ios 9, you have to set allowsBackgroundLocationUpdates.

来源：https://stackoverflow.com/questions/33147568/weird-locations-from-cllocationmanager-in-ios9