iOS Beacon监控 - 未触发RegionLeft

Question

我实施了CLLocationManager.StartMonitoring()方法。当信标进入电话范围时会触发CLLocationManager.EnterRegion，但是当信标再次超出电话范围时，RegionLeft不会被呼叫。我使用以下代码：

public void StartWakeupForBeacon()
    {
        //NSOperationQueue.MainQueue.AddOperation(() =>
        //{
        string message = "";
        CLProximity previousProximity = CLProximity.Far;
        var userId = ServiceLocator.Instance.Get<IAccountStoreService>().GetAccountUserId();
        var tupple = UtilHelper.GetMajorMinorFromUserId(userId);
        var major = tupple.Item1;
        var minor = tupple.Item2;

        var beaconUuid = UuidHelper.BeaconUuidString;
        BeaconRegion = new CLBeaconRegion(new NSUuid(beaconUuid), (ushort)major, (ushort)minor, "com.example.company");
        BeaconRegion.NotifyEntryStateOnDisplay = true;
        BeaconRegion.NotifyOnExit = true;
        BeaconRegion.NotifyOnEntry = true;

        LocationManager = new CLLocationManager();
        LocationManager.RequestAlwaysAuthorization();

        LocationManager.RegionEntered += (object sender, CLRegionEventArgs e) =>
        {
            Console.WriteLine("region entered");
            var btService = ServiceLocator.Instance.Get<IBluetoothService>();
            ServiceLocator.Instance.Get<ILoggingService>().LogEvent(LoggingService.BeaconRegionEnteredEvent);
            btService.ExchangeData();
        };

        LocationManager.RegionLeft += (object sender, CLRegionEventArgs e) =>
        {
            Console.WriteLine("region left");
            ServiceLocator.Instance.Get<ILoggingService>().LogEvent(LoggingService.BeaconRegionLeftEvent);
        };



        LocationManager.DidDetermineState += (object sender, CLRegionStateDeterminedEventArgs e) =>
        {

            switch (e.State)
            {
                case CLRegionState.Inside:
                    Console.WriteLine("region state inside");
                    break;
                case CLRegionState.Outside:
                    Console.WriteLine("region state outside");
                    break;
                case CLRegionState.Unknown:
                    Console.WriteLine("region unknown");
                    break;
                default:
                    Console.WriteLine("region state unknown");
                    break;
            }
        };
        LocationManager.DidStartMonitoringForRegion += (object sender, CLRegionEventArgs e) =>
        {
            LocationManager.RequestState(e.Region);
            string t_region = e.Region.Identifier.ToString();
            Console.WriteLine(t_region);
        };
        LocationManager.DidRangeBeacons += (object sender, CLRegionBeaconsRangedEventArgs e) =>
        {
            if (e.Beacons.Length > 0)
            {
                CLBeacon beacon = e.Beacons[0];
                switch (beacon.Proximity)
                {
                    case CLProximity.Immediate:
                        message = "Immediate";
                        break;
                    case CLProximity.Near:
                        message = "Near";
                        break;
                    case CLProximity.Far:
                        message = "Far";
                        break;
                    case CLProximity.Unknown:
                        message = "Unknown";
                        //SendNotication();
                        break;
                }

                if (previousProximity != beacon.Proximity)
                {
                    Console.WriteLine(message);
                }
                previousProximity = beacon.Proximity;
            }
            else
            {
                Console.WriteLine("nothing");
            }
        };
        LocationManager.StartMonitoring(BeaconRegion);
        LocationManager.MonitoringFailed += (sender, e) =>
        {
            System.Diagnostics.Debug.WriteLine("Failed monitoring");
        };
        LocationManager.StartRangingBeacons(BeaconRegion);
        //});
    }

当Beacon超出手机范围时，我可以看到应用程序已识别出这一点，因为DidRangeBeacon不再识别任何信标并且打印“没有”＆＃34;到控制台。

此外，我得到了关于位置管理器的奇怪的设备日志，它基本上发出了以下警告：

#Warning Tried injecting when not running