iPhone Gps in Background Never Resumes After Pause

iPhone GPS in background never resumes after pause

If you search for pausesLocationUpdatesAutomatically on the Apple forums you'll find a recent question along similar lines which has had a response from an Apple developer. I won't repost it directly here since it is a private forum, but the gist is that the location pausing is for instances when the user forgets that they have got a location aware app running and have stopped using it. By pausing updates their battery won't be drained as quickly. Unfortunately it's not possible to know whether new movement is them resuming the activity or doing something else, so updates don't resume until the app comes back to the foreground. Their suggestion is to catch the pause call and get the user's attention somehow to get them to open the app if they still want updates.

EDIT:

From Apple's own documentation of pausesLocationUpdatesAutomatically. They suggest:

After a pause occurs, it is your responsibility to restart location services again when you determine that they are needed. Core Location calls the locationManagerDidPauseLocationUpdates(_:)
method of your location manager's delegate to let you know that a
pause has occurred. In that method, you might configure a local
notification whose trigger is of type UNLocationNotificationTrigger
and is set to notify when the user exits the current region. The
message for the local notification should prompt the user to launch
your app again so that it can resume updates.

Location tracking stops after a while when app is in the background

Switch to significant location updates when the app moves to background. iOS will unload the app if it keep alive in the background indefinitely.

locationManager.pausesLocationUpdatesAutomatically = false

Why does didUpdateLocations: only have one location after locationManagerDidResumeLocationUpdates:

When you pause the location updates, the system considers that you don't need the location for now. Resuming it will only give you the current location.

This is a normal behavior.

How to keep GPS app running in background without pauses

In your info plist, add Required background modes

and set one item to App registers for location updates

Updated:

As ios return to - (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation when there is a significant distance change. I guess you need to change:

// Set the movement threshold.
locationManager.distanceFilter = 500; // meters

Turning off GPS in background

See http://developer.apple.com/library/ios/#documentation/iphone/conceptual/iphoneosprogrammingguide/ManagingYourApplicationsFlow/ManagingYourApplicationsFlow.html

Apple does not support long running background task in general.

This does only work for specific tasks:

audio,
location,
voip,
newsstand-content,
external-accessory,
bluetooth-central and
bluetooth-peripheral

When you do not use any of that, your app could be suspended.

In your case ypu have specified location, but disabled the location update. Then for apple there is no reason to keep your app in background mode.

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