How to detect when beacon is out of range

[vmichalak]

Hello, I use flutter_beacon for a connected tag for luggage project. I attempt to push a local notification when the beacon device is out of range but it seems not work.

flutterBeacon.monitoring(regions).listen((result) async {
      //get gps coordinates
      Position position = await Geolocator().getCurrentPosition(desiredAccuracy: LocationAccuracy.best);
      if(position == null){
        position = await Geolocator().getLastKnownPosition(desiredAccuracy: LocationAccuracy.best);
      }

      if(result.monitoringEventType == MonitoringEventType.didEnterRegion) {
        //save to store with timestamp
        Storage().storeValue(
            "beacon_last_latitude", position.latitude.toString());
        Storage().storeValue(
            "beacon_last_longitude", position.longitude.toString());
        Storage().storeValue("beacon_last_timestamp",
            new DateTime.now().millisecondsSinceEpoch.toString());

        prefix0.log("BEACON FOUND: " + position.latitude.toString() + " - " +
            position.longitude.toString());
      } else if(result.monitoringEventType == MonitoringEventType.didExitRegion) {
        LocalNotification(BEACON_NOTIFICATION_CHANNEL, "Out of range", "Warning, your luggage is out of range.").send();
      }
});

In this case, i'm sure the local notification work but is never fired when i go away from my beacon. Do you have any idea to correct this issue ? Perhaps i don't understand the MonitoringEventType.

Thanks in advance, Valentin

[alann-maulana]

Hi @vmichalak

It seems that you already solved your issue, great..

[vmichalak]

Hi @alann-maulana , The problem is between keyboard and chair in this case. I start the monitoring two times and it causes some issues. Sorry.