How to display notifications when multiple iBeacons are in range - ios

Question

I have 3 iBeacons which are placed in 3 different rooms. When I walk into each of rooms I'd like to receive a notification while my app is closed that tells me which room I'm in.
My beacons all have the UUID but different major and minor versions.
This is what we've implemented so far in our class (not in App Delegate)
-(void)locationManager:(CLLocationManager*)manager didRangeBeacons:(NSArray*)beacons inRegion:(CLBeaconRegion*)region {
// firstBeacon is the closest beacon
CLBeacon *firstBeacon = [beacons firstObject];
NSLog(#" Major %# Minor %#", firstBeacon.major, firstBeacon.minor);
int major = [firstBeacon.major intValue];
int minor = [firstBeacon.minor intValue];
if (major == 43005 && minor == 52679) {
UILocalNotification *notification = [[UILocalNotification alloc] init];
notification.soundName = #"Default";
notification.alertBody = #"Green";
[[UIApplication sharedApplication] presentLocalNotificationNow:notification];
self.beaconColour.text = #"Green";
}
else if (major == 48891 && minor == 47852) {
UILocalNotification *notification = [[UILocalNotification alloc] init];
notification.soundName = #"Default";
notification.alertBody = #"Light Blue";
[[UIApplication sharedApplication] presentLocalNotificationNow:notification];
self.beaconColour.text = #"Light Blue";
}
else if (major == 59510 && minor == 42953) {
UILocalNotification *notification = [[UILocalNotification alloc] init];
notification.soundName = #"Dark Blue";
notification.alertBody = #"Green";
[[UIApplication sharedApplication] presentLocalNotificationNow:notification];
self.beaconColour.text = #"Dark Blue";
}
self.major.text = [NSString stringWithFormat:#"%d", major];
self.minor.text = [NSString stringWithFormat:#"%d", minor];
}
Updated code based on answer
#import "ViewController.h"
#interface ViewController ()
#end
#implementation ViewController
- (void)viewDidLoad
{
[super viewDidLoad];
self.locationManager = [[CLLocationManager alloc] init];
self.locationManager.delegate = self;
NSUUID *uuid = [[NSUUID alloc] initWithUUIDString:#"B9407F30-F5F8-466E-AFF9-25556B57FE6D"];
self.myBeaconRegion = [[CLBeaconRegion alloc] initWithProximityUUID:uuid
identifier:#"com.accenture.testregion"];
self.myBeaconRegion.notifyEntryStateOnDisplay = YES;
self.myBeaconRegion.notifyOnEntry = YES;
self.myBeaconRegion.notifyOnExit = YES;
[self.locationManager startMonitoringForRegion:self.myBeaconRegion];
}
- (void)didReceiveMemoryWarnins {
[super didReceiveMemoryWarning];
}
BOOL _isInsideRegion;
- (void)locationManager:(CLLocationManager *)manager didEnterRegion:(CLRegion *)region {
NSLog(#"didEnterRegion");
if ([region isKindOfClass:[CLBeaconRegion class]]) {
CLBeaconRegion *beaconRegion = (CLBeaconRegion *)region;
int major = [beaconRegion.major intValue];
int minor = [beaconRegion.minor intValue];
NSLog(#" Major %d Minor %d", major, minor);
if (major == 43005 && minor == 52679) {
self.beaconColour.text = #"Green";
if (!_isInsideRegion) {
UILocalNotification *notification = [[UILocalNotification alloc] init];
notification.soundName = #"Default";
notification.alertBody = #"Green";
[[UIApplication sharedApplication] presentLocalNotificationNow:notification];
}
_isInsideRegion = YES;
}
else if (major == 48891 && minor == 47852) {
self.beaconColour.text = #"Light Blue";
if (!_isInsideRegion) {
UILocalNotification *notification = [[UILocalNotification alloc] init];
notification.soundName = #"Default";
notification.alertBody = #"Green";
[[UIApplication sharedApplication] presentLocalNotificationNow:notification];
}
_isInsideRegion = YES;
}
else if (major == 59510 && minor == 42953) {
self.beaconColour.text = #"Dark Blue";
if (!_isInsideRegion) {
UILocalNotification *notification = [[UILocalNotification alloc] init];
notification.soundName = #"Default";
notification.alertBody = #"Green";
[[UIApplication sharedApplication] presentLocalNotificationNow:notification];
}
_isInsideRegion = YES;
}
}
}

Answer 1

Try not to get first object from beacons array, you should enumerate it and compare which one is which, sometimes you can receive a signal from few beacons.
I made it work by calling didEnterRegion: delegate instead on didRangeBeacons:
You should also create a boolean flag (variable) to prevent duplicate sending of notification. And mark it true inside your if condition when minor/major match and set it to false in didExitRegion:
BOOL _isInsideRegion;
- (void)locationManager:(CLLocationManager *)manager didEnterRegion:(CLRegion *)region {
if ([region isKindOfClass:[CLBeaconRegion class]]) {
CLBeaconRegion *beaconRegion = (CLBeaconRegion *)region;
int major = [beaconRegion.major intValue];
int minor = [beaconRegion.major.minor intValue];
if (major == 43005 && minor == 52679) {
if (!_isInsideRegion) {
UILocalNotification *notification = [[UILocalNotification alloc] init];
notification.soundName = #"Default";
notification.alertBody = #"Green";
[[UIApplication sharedApplication] presentLocalNotificationNow:notification];
}
_isInsideRegion = YES;
self.beaconColour.text = #"Green";
}
else if (major == 48891 && minor == 47852) {
if (!_isInsideRegion) {....
}
}
- (void)locationManager:(CLLocationManager *)manager didExitRegion:(CLRegion *)region {
if ([region isKindOfClass:[CLBeaconRegion class]]) {
CLBeaconRegion *beaconRegion = (CLBeaconRegion *)region;
if (major == 43005 && minor == 52679) {
if (!_isInsideRegion) {
// You can send another notification to inform user that he left the region
}
_isInsideRegion = NO;
}

Answer 2

When your app is in the background, you don't get region entry/exit events super quickly. It can take up to 15 minutes to get a notification. See here: http://developer.radiusnetworks.com/2013/11/13/ibeacon-monitoring-in-the-background-and-foreground.html