Region Monitoring Glitch on iOS 7 – Multiple Notifications at the same time

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I have found a fix for this strange bug. We have tested for over 1 week and so far we haven’t see the same bug again. Here is the solution:-

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

NSLog(@"didEnterRegion");
CLLocation * lastLocation = [manager location];

BOOL doesItContainMyPoint;

if(lastLocation==nil)
    doesItContainMyPoint = NO;
else{
    CLLocationCoordinate2D theLocationCoordinate = lastLocation.coordinate;
    CLCircularRegion * theRegion = (CLCircularRegion*)region;
    doesItContainMyPoint = [theRegion containsCoordinate:theLocationCoordinate];
}

if(doesItContainMyPoint){
    NSString* message = [NSString stringWithFormat:@"You are now in this region:%@",region.identifier];
    UIApplicationState state = [[UIApplication sharedApplication] applicationState];

    if (state == UIApplicationStateBackground || state == UIApplicationStateInactive)
       {
         UILocalNotification *notification = [[UILocalNotification alloc] init];
         notification.fireDate = [NSDate date];
         NSTimeZone* timezone = [NSTimeZone defaultTimeZone];
         notification.timeZone = timezone;
         notification.alertBody = message;
         notification.alertAction = @"Show";
         notification.soundName = UILocalNotificationDefaultSoundName;
         [[UIApplication sharedApplication] scheduleLocalNotification:notification];
        }
  }
}

I use CLLocation * lastLocation = [manager location]; to get the latest location from the device and use this coordinate to see if it is inside the triggered region with containsCoordinate: method. If it is inside, then only the local notification will trigger.

For the details explanation on this bug and the way to fix it, you may visit: iOS Region Monitoring and Location Manager

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