iOS Location Updates not trigerred consistently in background mode - ios

Question

Requirement:
To Trigger Location update Callback after every second when the app is in background.
Problem:
Location Callbacks are not triggered after every second. Instead we get them inconsistently sometimes after 1 second, sometimes after 4 second and even with gap of 40-50 seconds.
Current Implementation:
setActivityType = CLActivityTypeOther
setAllowsBackgroundLocationUpdates = YES
setDesiredAccuracy = kCLLocationAccuracyBestForNavigation
setDistanceFilter = kCLDistanceFilterNone
setPausesLocationUpdatesAutomatically = false
plist configuration also done for background location updates.
Please suggest what more can be done to achieve solution for this problem?

Answer 1

Try out below code for background location updation when a significant location change is occured:
#pragma mark - CLLocationManager
- (void)startContinuosLocationUpdate
{
CLAuthorizationStatus status = [CLLocationManager authorizationStatus];
if (status == kCLAuthorizationStatusDenied)
{
NSLog(#"Location services are disabled in settings.");
}
else
{
// for iOS 8
if ([self.anotherLocationManager respondsToSelector:#selector(requestAlwaysAuthorization)])
{
[self.anotherLocationManager requestAlwaysAuthorization];
}
// for iOS 9
if ([self.anotherLocationManager respondsToSelector:#selector(setAllowsBackgroundLocationUpdates:)])
{
[self.anotherLocationManager setAllowsBackgroundLocationUpdates:YES];
}
[self.anotherLocationManager startUpdatingLocation];
}
}
- (void)stopContinuosLocationUpdate
{
[self.anotherLocationManager stopUpdatingLocation];
}
- (void)startMonitoringLocation
{
if (_anotherLocationManager)
[_anotherLocationManager stopMonitoringSignificantLocationChanges];
self.anotherLocationManager = [[CLLocationManager alloc]init];
_anotherLocationManager.delegate = self;
_anotherLocationManager.desiredAccuracy = kCLLocationAccuracyBestForNavigation;
_anotherLocationManager.activityType = CLActivityTypeOtherNavigation;
if(SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(#"9.0")) {
[_anotherLocationManager setAllowsBackgroundLocationUpdates:YES];
}
else if(SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(#"8.0")) {
[_anotherLocationManager requestAlwaysAuthorization];
}
[_anotherLocationManager startMonitoringSignificantLocationChanges];
}
- (void)restartMonitoringLocation
{
[_anotherLocationManager stopMonitoringSignificantLocationChanges];
if(SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(#"9.0")) {
[_anotherLocationManager setAllowsBackgroundLocationUpdates:YES];
}
else if(SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(#"8.0")) {
[_anotherLocationManager requestAlwaysAuthorization];
}
[_anotherLocationManager startMonitoringSignificantLocationChanges];
}