iOS startMonitoringForRegion, didExitRegion, didEnterRegion, didStartMonitoringForRegion. Методы не стреляют должным образом

Question

Я запускаю свой код в симуляторе iPhone, и в меню симулятора я выбираю: «Отладка, Расположение, Apple», чтобы установить мое текущее местоположение в расположении Apple в Купертино.

Затем я выбираю из меню симулятора: «Отладка, Расположение, Автострада».Текущее местоположение корректно обновляется вдоль автострады 280.

Мой код должен создать «геозону» длиной 1500 метров.Каждый раз, когда устройство достигает границы - оно бросает булавку и рисует круг.

Проблемы .....

1. "didExitRegion" не вызывается на правильном расстоянии,он вызывается в нескольких милях вниз по шоссе.
2. "didStartMonitoringForRegion" никогда не вызывается.

Любая помощь приветствуется !!Спасибо !!

Вот мой код:

ViewController.h

#import <UIKit/UIKit.h>
#import <CoreLocation/CoreLocation.h>
#import <MapKit/MKMapView.h>
#import <MapKit/MapKit.h>

@interface ViewController : UIViewController <CLLocationManagerDelegate, MKMapViewDelegate>

@property(nonatomic,strong) CLLocationManager *locationManager;
@property(nonatomic,strong) MKMapView *myMapView;

@end

ViewController.m

#import "ViewController.h"
#import "POI.h"

@implementation ViewController

@synthesize locationManager;
@synthesize myMapView;

- (void)viewDidLoad
{
    [super viewDidLoad];

    locationManager = [[CLLocationManager alloc] init];
    [locationManager setDelegate:self];
    [locationManager setDistanceFilter:kCLDistanceFilterNone];

    if([CLLocationManager authorizationStatus] == kCLAuthorizationStatusAuthorized)
        [locationManager startUpdatingLocation];

    myMapView = [[MKMapView alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)];

    [myMapView setMapType:MKMapTypeStandard];
    [myMapView setDelegate:self];
    [myMapView setShowsUserLocation:YES];
    [self.view addSubview:myMapView];

}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{return NO;}

#pragma mark CLLocationManagerDelegate methods

-(void)locationManager:(CLLocationManager *)manager monitoringDidFailForRegion:(CLRegion *)region withError:(NSError *)error
{    NSLog(@"%@: %@", @"monitoring failed", error.description); }

-(void)locationManager:(CLLocationManager *)manager didStartMonitoringForRegion:(CLRegion *)region
{    NSLog(@"%@", @"monitoring succeeded"); }

-(void)locationManager:(CLLocationManager *)manager didEnterRegion:(CLRegion *)region
{    NSLog(@"%@: %@", @"region entered", region.identifier);}

-(void)locationManager:(CLLocationManager *)manager didExitRegion:(CLRegion *)region
{
    NSLog(@"%@: %@", @"region exited", region.identifier);

    [locationManager startUpdatingLocation];
}

-(void)locationManager:(CLLocationManager *)manager didChangeAuthorizationStatus:(CLAuthorizationStatus)status
{
    if(status == kCLAuthorizationStatusAuthorized)
        [locationManager startUpdatingLocation];
}

- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation
{
    NSLog(@"%@", @"New Location");

    [locationManager stopUpdatingLocation];

    NSInteger radius = 1500;

    CLRegion *reg = [[CLRegion alloc] initCircularRegionWithCenter:newLocation.coordinate radius:radius identifier:@"userLocation"];
    [locationManager startMonitoringForRegion:reg desiredAccuracy:25];

    NSDateFormatter *df = [[NSDateFormatter alloc] init];
    [df setDateStyle:NSDateFormatterShortStyle];
    [df setTimeStyle:NSDateFormatterShortStyle];

    POI *poi = [[POI alloc] init];
    [poi setCoordinate:newLocation.coordinate];
    [poi setTitle:[df stringFromDate:[NSDate date]]];
    [myMapView addAnnotation:poi];

    MKCircle *circle = [MKCircle circleWithCenterCoordinate:newLocation.coordinate radius:radius];
    [myMapView addOverlay:circle];
}

// Called when there is an error getting the location
- (void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error
{    NSLog(@"%@: %@", @"get location failed", error.description);   }

#pragma mark MKMapViewDelegate methods

-(MKOverlayView *)mapView:(MKMapView *)mapView viewForOverlay:(id<MKOverlay>)overlay
{
    MKCircleView *circleView = [[MKCircleView alloc] initWithCircle:overlay];

    circleView.fillColor = [UIColor blueColor];
    circleView.alpha = 0.25;

    return circleView;
}

-(MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id<MKAnnotation>)annotation
{
    if([annotation isKindOfClass:[MKUserLocation class]])
        return nil;

    static NSString *annotationIdentifier = @"annotationIdentifier";
    MKPinAnnotationView *newAnnotation = (MKPinAnnotationView *)[mapView dequeueReusableAnnotationViewWithIdentifier:annotationIdentifier];

    if(newAnnotation == nil)
        newAnnotation = [[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:annotationIdentifier];

    [newAnnotation setAnimatesDrop:YES];
    [newAnnotation setCanShowCallout:YES];

    return newAnnotation;
}

@end

POI.h

#import <Foundation/Foundation.h>
#import <MapKit/MapKit.h>

@interface POI : MKPointAnnotation
{
    NSString *subtitle;
    NSString *title;
    NSInteger tag;
    MKPinAnnotationColor pinColor;
}

@property(nonatomic,strong) NSString *subtitle;
@property(nonatomic,strong) NSString *title;
@property(nonatomic,assign) NSInteger tag;
@property(nonatomic,assign) MKPinAnnotationColor pinColor;

@end

POI.m

#import "POI.h"
@implementation POI
@synthesize tag, title, subtitle, pinColor;
@end