CoreMotion updates in background state

by

RunKeeper actually does use the audio trick to stay awake. If you open up the app package and check their Info.plist you will see that it registers for the background audio mode. This is how they pull off periodic audio notifications of your distance, speed, and pace. It is also how they stay awake during your run while minimizing battery drain.

If you noticed that the Location Services icon (the triangle in the status bar) disappears completely while using RunKeeper then they definitely are not using any type of location tracking to accomplish background execution. Even activating geo-fences and significant location change monitoring would cause the Location Services icon to appear.

They also aren’t using the M7 to stay awake because it doesn’t work that way. An update from the M7-related CoreMotion APIs will not wake up your app from sleep. When they app does wake up they would be able to query the Motion Activity and Step history and maybe try to compute something, but I doubt it would be all that accurate.

Finally you should note that the Auto-pause APIs were introduced in iOS 6 before the release of the iPhone 5s and M7 chip. They are orthogonal concepts.

More Related Contents:

  1. How do I get a background location update every n minutes in my iOS application?
  2. Periodic iOS background location updates
  3. Background Location Services not working in iOS 7
  4. Get Location Updates for iOS App Even when Suspended
  5. Start Location Manager in iOS 7 from background task
  6. allowsBackgroundLocationUpdates in CLLocationManager in iOS9
  7. didFailWithError: Error Domain=kCLErrorDomain Code=0 “The operation couldn’t be completed. (kCLErrorDomain error 0.)”
  8. Testing CoreLocation on iPhone Simulator
  9. Calculating bearing between two CLLocationCoordinate2Ds
  10. iPhone GPS in background never resumes after pause
  11. iOS: App is not asking user’s permission while installing the app. getting kCLAuthorizationStatusNotDetermined every time – Objective-c & Swift
  12. Get device location (only country) in iOS
  13. iOS – MKMapView place annotation by using address instead of lat / long
  14. Is there a way to check if the iOS device is locked/unlocked?
  15. How to get Location user with CLLocationManager in swift?
  16. How can I prompt the user to turn on location services after user has denied their use
  17. distanceFromLocation – Calculate distance between two points
  18. iOS GPS tracking app that runs all the time
  19. Centering MKMapView on spot N-pixels below pin
  20. Behaviour for significant change location API when terminated/suspended?
  21. iOS Geofence CLCircularRegion monitoring. locationManager:didExitRegion does not seem to work as expected
  22. Is it possible to use Core Location / GPS without any internet connection / disabled cellular network?
  23. Calculate Total Traveled Distance iOS Swift
  24. Will iOS region monitoring call didEnterRegion on my app if my app is in a terminated state?
  25. locationManager:didEnterRegion not called when a beacon is detected
  26. deferredLocationUpdatesAvailable returns NO in iOS 10
  27. Location access – App is not asking for user permission to access location – iOS 11
  28. Region Monitoring Glitch on iOS 7 – Multiple Notifications at the same time
  29. Change paid app to free but know if user previously purchased it
  30. Warning: UICollectionViewFlowLayout has cached frame mismatch for index path ‘abc’

Leave a Comment