GeoFencing doesn't work

Question

I'm making an app with GeoFencing. I've read here and built an app. It doesn't crash but neither does it react once I enter the monitored area. It does log out "Started monitoring" but it doesn't react once I select my *.GPX file. This is my ViewController code:

@interface myViewController () {
CLLocationManager *locationManager;
}

@end

@implementation RegisterViewController

@synthesize GeoFences;

- (void)viewDidLoad {
[super viewDidLoad];

// Initalize locationManager
locationManager = [[CLLocationManager alloc] init];
}

- (IBAction)getLocation:(id)sender {
// Start monitoring
// Create a home NSDictionary
NSDictionary *myDictionary = [[NSDictionary alloc] initWithObjectsAndKeys:@"23123124arevar", @"title", @"00.0", @"latitude", @"00.0", @"longitude", @"100", @"radius", nil];
NSMutableArray *regions = [[NSMutableArray alloc] init];
CLRegion *region = [self mapDictionaryToRegion:myDictionary];
[regions insertObject:region atIndex:0];
NSLog(@"Count: %lu", [regions count]);
[self startMonitoringRegions:regions];
}

- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}

- (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];
}

-(void)startMonitoringRegions:(NSMutableArray *)array {
for (CLRegion *GeoFence in array)
{
    NSLog(@"Started monitoring");
    [locationManager startMonitoringForRegion:GeoFence];
}
}

- (void)locationManager:(CLLocationManager *)manager didEnterRegion:(CLRegion *)region
{
NSLog(@"Exited Region - %@", region.identifier);
// post a notification
}

- (void)locationManager:(CLLocationManager *)manager didExitRegion:(CLRegion *)region
{
NSLog(@"Exited Region - %@", region.identifier);
// post a notification
}

@end

Here's my *.GPX file:

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<gpx
xmlns="http://www.topografix.com/GPX/1/1"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xsi:schemaLocation="http://www.topografix.com/GPX/1/1 http://www.topografix.com/GPX/1/1/gpx.xsd"
version="1.1" 
creator="gpx-poi.com">
<wpt lat="00.0" lon="00.0">
<time>2015-01-01T14:45:02Z</time>
</wpt>
</gpx>

I've replaced my actual coordinates with 00.0.

Could someone please help me with this and why it does't do anything when I enter my *.GPX area? Also, how can I create a more appropriate identifier?

Thanks! Erik

Answer 1

I believe you forgot to set the locationManager delegate to your view controller:

    locationManager.delegate = self;

Put this in your viewDidLoad after creating locationManager.

You should also implement monitoringDidFailForRegion to detect any errors. Calling startMonitoring doesn't guarantee it will actually start. It could fail for various reasons.