Assertion Failure with Estimote

Question

I'm having some problems when I try and run my "xcode" project and I get this "run time" error.

Assertion failure in -[CLLocationManager startRangingBeaconsInRegion:], /SourceCache/CoreLocationFramework/CoreLocation-1613.35/Framework/CoreLocation/CLLocationManager.m:991
2014-05-11 15:47:15.483 Ziew[1516:60b] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Invalid parameter not satisfying: region != nil'

I'm trying use the "Estimote SDK" to build a similar application using the proximity application code example. The original example works great and I didn't change anything when I added their code. Here some of my methods:

- (id)initWithBeacon:(ESTBeacon *)beacon
{
    self = [super init];
    if (self)
    {
        self.beacon = beacon;
    }
    return self;
}

- (void)viewDidLoad
{
    [super viewDidLoad];
    [[UITabBar appearance] setSelectedImageTintColor:[UIColor colorWithRed:(141/255.0) green:(198/255.0) blue:(63/255.0) alpha:1]];
    // Do any additional setup after loading the view.

    //Beacon Manager setup
    self.beaconManager = [[ESTBeaconManager alloc] init];
    self.beaconManager.delegate = self;

    self.beaconRegion = [[ESTBeaconRegion alloc] initWithProximityUUID:self.beacon.proximityUUID
                                                                 major:[self.beacon.major unsignedIntValue]
                                                                 minor:[self.beacon.minor unsignedIntValue]
                                                            identifier:@"RegionIdentifier"];
    [self.beaconManager startRangingBeaconsInRegion:self.beaconRegion];
}

#pragma mark - ESTBeaconManager delegate

- (void)beaconManager:(ESTBeaconManager *)manager didRangeBeacons:(NSArray *)beacons inRegion:(ESTBeaconRegion *)region
{
    if (beacons.count > 0)
    {
        ESTBeacon *firstBeacon = [beacons firstObject];
        [self textForProximity:firstBeacon.proximity];
    }
    NSLog(@"No beacons within region");
}

#pragma mark -

- (void)textForProximity:(CLProximity)proximity
{
    switch (proximity) {
        case CLProximityFar:
             NSLog(@"Far");
            break;
        case CLProximityNear:
            NSLog(@"Near");
            break;
        case CLProximityImmediate:
            NSLog(@"Immediate");
            break;

        default:
            NSLog(@"Unknown");
            break;
    }
}

- (void)viewDidDisappear:(BOOL)animated
{
    [self.beaconManager stopRangingBeaconsInRegion:self.beaconRegion];

    [super viewDidDisappear:animated];
}

What am I missing?

SOLUTION

Thank you to everyone who responded. Using the Estimote SDK you can assign a constant UUID with the beacon corresponding major and minor id to get the startRangingBeaconsInRegion method called.

self.beaconRegion = [[ESTBeaconRegion alloc] initWithProximityUUID:ESTIMOTE_PROXIMITY_UUID
                                                                 major:your_major_id
                                                                 minor:your_minor_id
                                                            identifier:@"RegionIdentifier"];

Answer 1

From what I can tell your beacon region is nil by the time you tell it to start ranging beacons. Since you assign to your property an initialized instance of a region, maybe your property declaration is listed as weak instead of strong?