locationmanager didenterregion doesn't get called

Question

Supposing my code looks like this:

- (void)locationManager:(CLLocationManager *)manager
        didRangeBeacons:(NSArray *)beacons
               inRegion:(CLBeaconRegion *)region {
    //Handle beacons found during ranging

}

-(void)initBeaconRegion
{

    NSUUID *proximityUUID = [[NSUUID alloc] initWithUUIDString:@"E2C56DB5-DFFB-48D2-B060-D0F5A71096E0"];

    self.beaconRegion = [[CLBeaconRegion alloc] initWithProximityUUID:proximityUUID major:345 minor:678 identifier:@"MyBeaconIdentifier"];
    self.beaconRegion.notifyEntryStateOnDisplay = NO; //Used for Monitoring
    self.beaconRegion.notifyOnEntry = YES; //Used for Monitoring
    self.beaconRegion.notifyOnExit = YES; //Used for Monitoring

}
- (void)locationManager:(CLLocationManager *)manager didEnterRegion:(CLRegion *)region {

    if ([region isKindOfClass:[CLBeaconRegion class]]) {
        CLBeaconRegion *beaconRegion = (CLBeaconRegion *)region;

        //now start ranging
//        [_locationManager startRangingBeaconsInRegion:beaconRegion];
    }
}
- (void)viewDidLoad {
    [super viewDidLoad];
    self.locationManager = [[CLLocationManager alloc] init];
    [self initBeaconRegion];
    [self.locationManager startRangingBeaconsInRegion:self.beaconRegion];
    NSLog(@"monitored regions %@",self.locationManager.monitoredRegions);
}

and some iPad app called xBeacon advertising with the same UUID, major and minor, this doesn't work. What am I doing wrong? Should I approach the advertising device with the app, or wait longer?

Tried the same with Estimote beacon app, and both apps work as I check it on Beacon Scanner on my Mac.

Answer 1

You are expecting a beacon monitoring callback to get called, but you aren't starting monitoring -- you are starting ranging. Try changing this line:

   [self.locationManager startRangingBeaconsInRegion:self.beaconRegion];

to:

   [self.locationManager startMonitoringRegion:self.beaconRegion];

Also, you need to set self.locationManager.delegate = self as @luca-corti suggests.

If you still don't get the callback, try using my Locate app to verify your test beacon is actually transmitting with the identifiers you expect.