BeaconRanege.m

- (void)locationManager:(CLLocationManager *)manager didRangeBeacons:(NSArray *)beacons inRegion:(CLBeaconRegion *)region {    NSString *message = nil;
    for (CLBeacon *beacon in beacons) {
        switch (beacon.proximity) {
            case CLProximityImmediate:
                message = @"CLProximityImmediate";
                break;
            case CLProximityNear:
                message = @"CLProximityNear";
                break;
            case CLProximityFar:
                message = @"CLProximityFar";
                break;
            case CLProximityUnknown:
                break;
            default:
                break;
        }
    }
    NSLog(@"%@", message);
}