requestLocation() fails to provide Course on watch hardware but work in Sim
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I've written a standalone Applewatch app which uses GPS. Trying to be a good citizen and minimize power consumption, I am using the single shot location request method. On the Xcode sim, this works fine, providing a location AND course and speed (when using one of the recorded movements in the sim). On real hardware, I get accurate lat and long data back but course always returns "-1". Note: I am not looking for Heading data as there is no magnetometer hardware in watch. I want course over the ground from ∆X,Y from the GPS fixes. Expected behavior is that it should not work in Sim with a single shot requestLocation(), but since it does, why not work on the real thing? Has anyone else seen this? Is this a bug to Radar, or a feature?
I suppose if this approach is known to fail, I could try startUpdating() until I see a course, then stop updating, but Apple says this is a power hogging approach.
gps watchkit core-location
asked Jan 4 at 0:33
BlueskyMedBlueskyMed
151211
add a comment |
I've written a standalone Applewatch app which uses GPS. Trying to be a good citizen and minimize power consumption, I am using the single shot location request method. On the Xcode sim, this works fine, providing a location AND course and speed (when using one of the recorded movements in the sim). On real hardware, I get accurate lat and long data back but course always returns "-1". Note: I am not looking for Heading data as there is no magnetometer hardware in watch. I want course over the ground from ∆X,Y from the GPS fixes. Expected behavior is that it should not work in Sim with a single shot requestLocation(), but since it does, why not work on the real thing? Has anyone else seen this? Is this a bug to Radar, or a feature?
I suppose if this approach is known to fail, I could try startUpdating() until I see a course, then stop updating, but Apple says this is a power hogging approach.
gps watchkit core-location
asked Jan 4 at 0:33
BlueskyMedBlueskyMed
151211
Continuing with experiments, it appears that the course issue is dependent on the properties of the instance of CLLocationManager: when locationMgr.desiredAccuracy = kCLLocationAccuracyKilometer locationMgr.distanceFilter = kCLDistanceFilterNone locationMgr.activityType = .otherNavigation No course reported by hardware(Sim does report), nbut when locationMgr.desiredAccuracy = kCLLocationAccuracyBest locationMgr.distanceFilter = kCLDistanceFilterNone locationMgr.activityType = .otherNavigation , then the watch does report course.
– BlueskyMed
Jan 4 at 20:33
add a comment |
I've written a standalone Applewatch app which uses GPS. Trying to be a good citizen and minimize power consumption, I am using the single shot location request method. On the Xcode sim, this works fine, providing a location AND course and speed (when using one of the recorded movements in the sim). On real hardware, I get accurate lat and long data back but course always returns "-1". Note: I am not looking for Heading data as there is no magnetometer hardware in watch. I want course over the ground from ∆X,Y from the GPS fixes. Expected behavior is that it should not work in Sim with a single shot requestLocation(), but since it does, why not work on the real thing? Has anyone else seen this? Is this a bug to Radar, or a feature?
I suppose if this approach is known to fail, I could try startUpdating() until I see a course, then stop updating, but Apple says this is a power hogging approach.
gps watchkit core-location
asked Jan 4 at 0:33
BlueskyMedBlueskyMed
151211
I've written a standalone Applewatch app which uses GPS. Trying to be a good citizen and minimize power consumption, I am using the single shot location request method. On the Xcode sim, this works fine, providing a location AND course and speed (when using one of the recorded movements in the sim). On real hardware, I get accurate lat and long data back but course always returns "-1". Note: I am not looking for Heading data as there is no magnetometer hardware in watch. I want course over the ground from ∆X,Y from the GPS fixes. Expected behavior is that it should not work in Sim with a single shot requestLocation(), but since it does, why not work on the real thing? Has anyone else seen this? Is this a bug to Radar, or a feature?
I suppose if this approach is known to fail, I could try startUpdating() until I see a course, then stop updating, but Apple says this is a power hogging approach.
gps watchkit core-location
gps watchkit core-location
asked Jan 4 at 0:33
BlueskyMedBlueskyMed
151211
asked Jan 4 at 0:33
BlueskyMedBlueskyMed
151211
asked Jan 4 at 0:33
BlueskyMedBlueskyMed
151211
asked Jan 4 at 0:33
BlueskyMedBlueskyMed
151211
asked Jan 4 at 0:33
BlueskyMedBlueskyMed
151211
151211
Continuing with experiments, it appears that the course issue is dependent on the properties of the instance of CLLocationManager: when locationMgr.desiredAccuracy = kCLLocationAccuracyKilometer locationMgr.distanceFilter = kCLDistanceFilterNone locationMgr.activityType = .otherNavigation No course reported by hardware(Sim does report), nbut when locationMgr.desiredAccuracy = kCLLocationAccuracyBest locationMgr.distanceFilter = kCLDistanceFilterNone locationMgr.activityType = .otherNavigation , then the watch does report course.
– BlueskyMed
Jan 4 at 20:33
add a comment |
Continuing with experiments, it appears that the course issue is dependent on the properties of the instance of CLLocationManager: when locationMgr.desiredAccuracy = kCLLocationAccuracyKilometer locationMgr.distanceFilter = kCLDistanceFilterNone locationMgr.activityType = .otherNavigation No course reported by hardware(Sim does report), nbut when locationMgr.desiredAccuracy = kCLLocationAccuracyBest locationMgr.distanceFilter = kCLDistanceFilterNone locationMgr.activityType = .otherNavigation , then the watch does report course.
– BlueskyMed
Jan 4 at 20:33
Continuing with experiments, it appears that the course issue is dependent on the properties of the instance of CLLocationManager: when locationMgr.desiredAccuracy = kCLLocationAccuracyKilometer locationMgr.distanceFilter = kCLDistanceFilterNone locationMgr.activityType = .otherNavigation No course reported by hardware(Sim does report), nbut when locationMgr.desiredAccuracy = kCLLocationAccuracyBest locationMgr.distanceFilter = kCLDistanceFilterNone locationMgr.activityType = .otherNavigation , then the watch does report course.
– BlueskyMed
Jan 4 at 20:33
Continuing with experiments, it appears that the course issue is dependent on the properties of the instance of CLLocationManager: when locationMgr.desiredAccuracy = kCLLocationAccuracyKilometer locationMgr.distanceFilter = kCLDistanceFilterNone locationMgr.activityType = .otherNavigation No course reported by hardware(Sim does report), nbut when locationMgr.desiredAccuracy = kCLLocationAccuracyBest locationMgr.distanceFilter = kCLDistanceFilterNone locationMgr.activityType = .otherNavigation , then the watch does report course.
– BlueskyMed
Jan 4 at 20:33
add a comment |
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Continuing with experiments, it appears that the course issue is dependent on the properties of the instance of CLLocationManager: when
locationMgr.desiredAccuracy = kCLLocationAccuracyKilometer
locationMgr.distanceFilter = kCLDistanceFilterNone
locationMgr.activityType = .otherNavigation
No course reported by hardware(Sim does report),but when
locationMgr.desiredAccuracy = kCLLocationAccuracyBest
locationMgr.distanceFilter = kCLDistanceFilterNone
locationMgr.activityType = .otherNavigation
then the watch does report course. It would seem that .DistanceFilter should be relevant to ∆X,∆Y reports for course, but why should .desiredAccuracy matter?
BTW, original code had Accuracy of 1km due Apple noting increasing accuracy increases power drain.
answered Jan 4 at 20:47
BlueskyMedBlueskyMed
151211
add a comment |
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Continuing with experiments, it appears that the course issue is dependent on the properties of the instance of CLLocationManager: when
locationMgr.desiredAccuracy = kCLLocationAccuracyKilometer
locationMgr.distanceFilter = kCLDistanceFilterNone
locationMgr.activityType = .otherNavigation
No course reported by hardware(Sim does report),but when
locationMgr.desiredAccuracy = kCLLocationAccuracyBest
locationMgr.distanceFilter = kCLDistanceFilterNone
locationMgr.activityType = .otherNavigation
then the watch does report course. It would seem that .DistanceFilter should be relevant to ∆X,∆Y reports for course, but why should .desiredAccuracy matter?
BTW, original code had Accuracy of 1km due Apple noting increasing accuracy increases power drain.
answered Jan 4 at 20:47
BlueskyMedBlueskyMed
151211
add a comment |
Continuing with experiments, it appears that the course issue is dependent on the properties of the instance of CLLocationManager: when
locationMgr.desiredAccuracy = kCLLocationAccuracyKilometer
locationMgr.distanceFilter = kCLDistanceFilterNone
locationMgr.activityType = .otherNavigation
No course reported by hardware(Sim does report),but when
locationMgr.desiredAccuracy = kCLLocationAccuracyBest
locationMgr.distanceFilter = kCLDistanceFilterNone
locationMgr.activityType = .otherNavigation
then the watch does report course. It would seem that .DistanceFilter should be relevant to ∆X,∆Y reports for course, but why should .desiredAccuracy matter?
BTW, original code had Accuracy of 1km due Apple noting increasing accuracy increases power drain.
answered Jan 4 at 20:47
BlueskyMedBlueskyMed
151211
add a comment |
Continuing with experiments, it appears that the course issue is dependent on the properties of the instance of CLLocationManager: when
locationMgr.desiredAccuracy = kCLLocationAccuracyKilometer
locationMgr.distanceFilter = kCLDistanceFilterNone
locationMgr.activityType = .otherNavigation
No course reported by hardware(Sim does report),but when
locationMgr.desiredAccuracy = kCLLocationAccuracyBest
locationMgr.distanceFilter = kCLDistanceFilterNone
locationMgr.activityType = .otherNavigation
then the watch does report course. It would seem that .DistanceFilter should be relevant to ∆X,∆Y reports for course, but why should .desiredAccuracy matter?
BTW, original code had Accuracy of 1km due Apple noting increasing accuracy increases power drain.
answered Jan 4 at 20:47
BlueskyMedBlueskyMed
151211
Continuing with experiments, it appears that the course issue is dependent on the properties of the instance of CLLocationManager: when
locationMgr.desiredAccuracy = kCLLocationAccuracyKilometer
locationMgr.distanceFilter = kCLDistanceFilterNone
locationMgr.activityType = .otherNavigation
No course reported by hardware(Sim does report),but when
locationMgr.desiredAccuracy = kCLLocationAccuracyBest
locationMgr.distanceFilter = kCLDistanceFilterNone
locationMgr.activityType = .otherNavigation
then the watch does report course. It would seem that .DistanceFilter should be relevant to ∆X,∆Y reports for course, but why should .desiredAccuracy matter?
BTW, original code had Accuracy of 1km due Apple noting increasing accuracy increases power drain.
answered Jan 4 at 20:47
BlueskyMedBlueskyMed
151211
answered Jan 4 at 20:47
BlueskyMedBlueskyMed
151211
answered Jan 4 at 20:47
BlueskyMedBlueskyMed
151211
answered Jan 4 at 20:47
BlueskyMedBlueskyMed
151211
151211
add a comment |
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Continuing with experiments, it appears that the course issue is dependent on the properties of the instance of CLLocationManager: when locationMgr.desiredAccuracy = kCLLocationAccuracyKilometer locationMgr.distanceFilter = kCLDistanceFilterNone locationMgr.activityType = .otherNavigation No course reported by hardware(Sim does report), nbut when locationMgr.desiredAccuracy = kCLLocationAccuracyBest locationMgr.distanceFilter = kCLDistanceFilterNone locationMgr.activityType = .otherNavigation , then the watch does report course.
– BlueskyMed
Jan 4 at 20:33