App listening to multiple UUID's

Question

Is it possible for an ios App to listen to multiple UUID's? Specifically for apples iBeacon technology.

NSUUID *uuid = [[NSUUID alloc] initWithUUIDString:@"23542266-18D1-4FE4-B4A1-23F8195B9D39"];
    self.beaconRegion = [[CLBeaconRegion alloc] initWithProximityUUID:uuid identifier:@"com.devfright.myRegion"];
    [self.locationManager startMonitoringForRegion:self.beaconRegion];

Using this code one could start monitoring the following uuid: 23542266-18D1-4FE4-B4A1-23F8195B9D39, if I would add another class listening to another uuid, would this work, wouldn't there be any interference? Maybe add several more listeners?

Answer 1

You can listen up to 20 UUIDs per app. Simply create more CLBeaconRegions, and call startMonitoringForRegion: for each region you want to monitor. You only need a single CLLocationManager to do this.

Note that you will get a call to didEnterRegion: / didExitRegion: for each region you are monitoring. The region parameter will tell you which region you have entered.

Number of UUID limit source: https://developer.apple.com/library/ios/documentation/UserExperience/Conceptual/LocationAwarenessPG/RegionMonitoring/RegionMonitoring.html#//apple_ref/doc/uid/TP40009497-CH9-SW2