region monitoring doesn't call didExitRegion unless conditions - ios

Question

I'm building an iOS 8 app that uses GeoFencing. I'm having some problems that I will explain later. But first, this is how I create a region and monitor it:
Variables in header file:
#property (nonatomic, strong) CLLocationManager *locationManager;
viewDidLoad:
// Initialize locationManager
self.locationManager = [[CLLocationManager alloc] init];
[self.locationManager requestAlwaysAuthorization];
// Set the delegate
self.locationManager.delegate = self;
self.locationManager.desiredAccuracy = kCLLocationAccuracyBest;
self.locationManager.distanceFilter = kCLLocationAccuracyBest;
Creating a region:
- (CLRegion*)mapDictionaryToRegion:(NSDictionary*)dictionary
{
NSString *title = [dictionary valueForKey:#"title"];
CLLocationDegrees latitude = [[dictionary valueForKey:#"latitude"] doubleValue];
CLLocationDegrees longitude =[[dictionary valueForKey:#"longitude"] doubleValue];
CLLocationCoordinate2D centerCoordinate = CLLocationCoordinate2DMake(latitude, longitude);
CLLocationDistance regionRadius = [[dictionary valueForKey:#"radius"] doubleValue];
return [[CLRegion alloc] initCircularRegionWithCenter:centerCoordinate
radius:regionRadius
identifier:title];
}
Start monitoring it:
-(void)startMonitoringForDictionary:(NSDictionary *)dictionary
{
// Start monitoring for the supplied data
CLRegion *region = [self mapDictionaryToRegion:dictionary];
[self.locationManager startMonitoringForRegion:region];
}
Listening for region crossing:
-(void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error
{
NSLog(#"Error: %#", error);
}
- (void)locationManager:(CLLocationManager *)manager didEnterRegion:(CLRegion *)region
{
NSLog(#"didEnterRegion");
}
- (void)locationManager:(CLLocationManager *)manager didExitRegion:(CLRegion *)region
{
NSLog(#"exited region");
}
I've remembered these keys in my target info:
NSLocationAlwaysUsageDescription
NSLocationWhenInUseUsageDescription
Problem:
Sometimes when I enter a region, it works flawless. Both didEnterRegion and didExitRegion is called like expected. But it appears as if I add the region while inside it, and then exit - it won't call didExitRegion. Only if it calls didEnterRegion first.
What I'm asking:
Could someone please explain the "rules" for region monitoring and how the device manages it, reports it, wakes app, etc? Also, I read in the documentation that I shouldn't expect updates more frequently than every 5 minutes. (This thing I'm making to practice calculates how long you've spent inside a region) - what if the user enters then exists quickly - then didExitRegion will never be called until I enter again?
Thanks!
Erik

Answer 1

You must call requestState immediately when calling startMonitoringForRegion