Monitoring regions with only uuid not work

BLE Beacons
1

Hi,
if i have:

        let beaconRegion = CLBeaconRegion(
        proximityUUID: NSUUID(UUIDString: "B9407F30-F5F8-466E-AFF9-25556B57FE6D")!,
        identifier: "region monitoring")
        self.beaconManager.startMonitoringForRegion(beaconRegion)

not work, but if i have

        let beaconRegion =CLBeaconRegion(
        proximityUUID: NSUUID(UUIDString: "B9407F30-F5F8-466E-AFF9-25556B57FE6D")!, major: 55555, minor: 11111,
        identifier: "region monitoring")

       self.beaconManager.startMonitoringForRegion(beaconRegion)

it works

Why?

Thanks

2

I did another test:
if there is a single beacon for uuid,

    proximityUUID: NSUUID(UUIDString: "B9407F30-F5F8-466E-AFF9-25556B57FE6D")!,
    identifier: "region monitoring")
    self.beaconManager.startMonitoringForRegion(beaconRegion)

it works!!!. > 1 beacon with same uuid, does not work.

What happened?

3

Take a look at this note from our iBeacon tutorial:

Keep in mind: When monitoring a region that spans multiple beacons, there will be a single “enter” event when the first matching beacon is detected; and a single “exit” event when none of the matching beacons can be detected anymore. There’s no way to keep track of “interim” beacons’ “enters” and “exits”—other than creating a single region per each beacon of course.

If you define the region with the UUID, and you have, e.g., 3 beacons with that UUID in range, disabling (are you using Flip to Sleep?) one will still mean you’re in range of 2 more. So there will be no “exit region” event.

4

Thanks, I kept in mind and I used ‘Flip to sleep’. The problem is that not triggered any enter or exit.
My goal is to monitor > 20 beacons and start ranging within didEnterRegion/didExitRegion events to know its details (major, minor)
Additionally, I am using the estimote’s app templates.
can you help me with another tip or suggestion?

5

This happen to me too, this methods works great after iOS 11, did you have some solution?