stopRangingBeaconsInRegion可能会停止监视区域的通知？
我正在做一个与CLLocationManager工作的示例项目。
我打电话给startMonitoringForRegion 。 然后，我开始用其他设备模拟一个信标，并didEnterRegion 。
在didEnterRegion ，我调用startRangingBeaconsInRegion并正常工作。
然后，我暂停信标发射器和didExitRegion被调用。 在didExitRegion我调用stopRangingBeaconsInRegion 。
如果我再次启动信标发射器， didEnterRegion不会被调用。
我在Apple文档中find了这个：
stopRangingBeaconsInRegion：停止指定信标区域的通知传递。
stopRangingBeaconsInRegion可能会停止监视区域的通知？
我尝试没有stopRangingBeaconsInRegion相同，工作正常。
谢谢
添加更多信息：
NSUUID *UUID = [[NSUUID alloc] initWithUUIDString:@"77777777-1717-2727-7777-777777777777"]; NSString *identifier = @"MyBeaconRegion"; CLBeaconRegion *region = [[CLBeaconRegion alloc] initWithProximityUUID:UUID identifier:identifier]; [_locationManager startMonitoringForRegion:region]; - (void)locationManager:(CLLocationManager *)manager didEnterRegion:(CLRegion *)region { NSLog(@"didEnterRegion"); [_locationManager startRangingBeaconsInRegion:(CLBeaconRegion*)region]; NSLog(@"StartRangingBeacons"); } - (void)locationManager:(CLLocationManager *)manager didExitRegion:(CLRegion *)region { NSLog(@"didExitRegion"); [_locationManager stopRangingBeaconsInRegion:(CLBeaconRegion*)region]; NSLog(@"StopRangingBeacons"); } - (void)locationManager:manager didRangeBeacons:(NSArray *)beacons inRegion:(CLBeaconRegion *)region { for (CLBeacon *beacon in beacons) { NSLog(@"Ranging Beacon: %@ and proximity: %f", beacon.proximityUUID.UUIDString, beacon.accuracy); } }
还有一些日志：
2015-01-13 09:46:30.559 RegionMonitoring[188:5314] didEnterRegion 2015-01-13 09:46:30.561 RegionMonitoring[188:5314] StartRangingBeacons 2015-01-13 09:46:31.579 RegionMonitoring[188:5314] Ranging Beacon: 77777777-1717-2727-7777-777777777777 and proximity: 0.008799 2015-01-13 09:46:32.575 RegionMonitoring[188:5314] Ranging Beacon: 77777777-1717-2727-7777-777777777777 and proximity: 0.011362 2015-01-13 09:46:33.580 RegionMonitoring[188:5314] Ranging Beacon: 77777777-1717-2727-7777-777777777777 and proximity: 0.012814 2015-01-13 09:46:34.580 RegionMonitoring[188:5314] Ranging Beacon: 77777777-1717-2727-7777-777777777777 and proximity: 0.012909 2015-01-13 09:46:35.579 RegionMonitoring[188:5314] Ranging Beacon: 77777777-1717-2727-7777-777777777777 and proximity: 0.012915 2015-01-13 09:46:36.579 RegionMonitoring[188:5314] Ranging Beacon: 77777777-1717-2727-7777-777777777777 and proximity: 0.011501 2015-01-13 09:46:37.576 RegionMonitoring[188:5314] Ranging Beacon: 77777777-1717-2727-7777-777777777777 and proximity: 0.010177 2015-01-13 09:46:38.576 RegionMonitoring[188:5314] Ranging Beacon: 77777777-1717-2727-7777-777777777777 and proximity: 0.013618 2015-01-13 09:46:39.578 RegionMonitoring[188:5314] Ranging Beacon: 77777777-1717-2727-7777-777777777777 and proximity: -1.000000 2015-01-13 09:46:40.573 RegionMonitoring[188:5314] Ranging Beacon: 77777777-1717-2727-7777-777777777777 and proximity: -1.000000 2015-01-13 09:46:41.578 RegionMonitoring[188:5314] Ranging Beacon: 77777777-1717-2727-7777-777777777777 and proximity: -1.000000 2015-01-13 09:46:42.575 RegionMonitoring[188:5314] Ranging Beacon: 77777777-1717-2727-7777-777777777777 and proximity: -1.000000 2015-01-13 09:46:43.578 RegionMonitoring[188:5314] didExitRegion 2015-01-13 09:46:43.579 RegionMonitoring[188:5314] StopRangingBeacons 2015-01-13 09:46:43.581 RegionMonitoring[188:5314] Ranging Beacon: 77777777-1717-2727-7777-777777777777 and proximity: -1.000000
然后，我打开灯塔，没有任何反应。
如果我尝试这个代码：
- (void)locationManager:(CLLocationManager *)manager didExitRegion:(CLRegion *)region { NSLog(@"didExitRegion"); //[_locationManager stopRangingBeaconsInRegion:(CLBeaconRegion*)region]; //NSLog(@"StopRangingBeacons"); }
工作正常：
2015-01-13 10:15:45.945 RegionMonitoring[364:11017] didEnterRegion 2015-01-13 10:15:45.947 RegionMonitoring[364:11017] StartRangingBeacons 2015-01-13 10:15:46.960 RegionMonitoring[364:11017] Ranging Beacon: 77777777-1717-2727-7777-777777777777 and proximity: 0.040842 2015-01-13 10:15:47.960 RegionMonitoring[364:11017] Ranging Beacon: 77777777-1717-2727-7777-777777777777 and proximity: 0.040842 2015-01-13 10:15:48.961 RegionMonitoring[364:11017] Ranging Beacon: 77777777-1717-2727-7777-777777777777 and proximity: 0.040842 2015-01-13 10:15:49.958 RegionMonitoring[364:11017] Ranging Beacon: 77777777-1717-2727-7777-777777777777 and proximity: 0.040842 2015-01-13 10:15:50.960 RegionMonitoring[364:11017] Ranging Beacon: 77777777-1717-2727-7777-777777777777 and proximity: -1.000000 2015-01-13 10:15:51.958 RegionMonitoring[364:11017] Ranging Beacon: 77777777-1717-2727-7777-777777777777 and proximity: -1.000000 2015-01-13 10:15:52.960 RegionMonitoring[364:11017] Ranging Beacon: 77777777-1717-2727-7777-777777777777 and proximity: -1.000000 2015-01-13 10:15:53.956 RegionMonitoring[364:11017] Ranging Beacon: 77777777-1717-2727-7777-777777777777 and proximity: -1.000000 2015-01-13 10:15:54.960 RegionMonitoring[364:11017] didExitRegion 2015-01-13 10:15:54.962 RegionMonitoring[364:11017] Ranging Beacon: 77777777-1717-2727-7777-777777777777 and proximity: -1.000000 2015-01-13 10:15:55.955 RegionMonitoring[364:11017] Ranging Beacon: 77777777-1717-2727-7777-777777777777 and proximity: -1.000000 2015-01-13 10:15:56.960 RegionMonitoring[364:11017] Ranging Beacon: 77777777-1717-2727-7777-777777777777 and proximity: -1.000000 2015-01-13 10:15:57.959 RegionMonitoring[364:11017] Ranging Beacon: 77777777-1717-2727-7777-777777777777 and proximity: -1.000000 2015-01-13 10:16:02.960 RegionMonitoring[364:11017] didEnterRegion 2015-01-13 10:16:02.962 RegionMonitoring[364:11017] StartRangingBeacons 2015-01-13 10:16:02.963 RegionMonitoring[364:11017] Ranging Beacon: 77777777-1717-2727-7777-777777777777 and proximity: 0.040842 2015-01-13 10:16:02.971 RegionMonitoring[364:11017] Ranging Beacon: 77777777-1717-2727-7777-777777777777 and proximity: 0.040842 2015-01-13 10:16:03.979 RegionMonitoring[364:11017] Ranging Beacon: 77777777-1717-2727-7777-777777777777 and proximity: 0.040842 2015-01-13 10:16:04.979 RegionMonitoring[364:11017] Ranging Beacon: 77777777-1717-2727-7777-777777777777 and proximity: 0.036694 2015-01-13 10:16:05.978 RegionMonitoring[364:11017] Ranging Beacon: 77777777-1717-2727-7777-777777777777 and proximity: 0.036051 2015-01-13 10:16:06.977 RegionMonitoring[364:11017] Ranging Beacon: 77777777-1717-2727-7777-777777777777 and proximity: -1.000000 2015-01-13 10:16:07.977 RegionMonitoring[364:11017] Ranging Beacon: 77777777-1717-2727-7777-777777777777 and proximity: -1.000000 2015-01-13 10:16:08.974 RegionMonitoring[364:11017] Ranging Beacon: 77777777-1717-2727-7777-777777777777 and proximity: -1.000000 2015-01-13 10:16:09.977 RegionMonitoring[364:11017] Ranging Beacon: 77777777-1717-2727-7777-777777777777 and proximity: -1.000000 2015-01-13 10:16:10.973 RegionMonitoring[364:11017] Ranging Beacon: 77777777-1717-2727-7777-777777777777 and proximity: -1.000000 2015-01-13 10:16:11.977 RegionMonitoring[364:11017] didExitRegion 2015-01-13 10:16:11.978 RegionMonitoring[364:11017] Ranging Beacon: 77777777-1717-2727-7777-777777777777 and proximity: -1.000000 2015-01-13 10:16:12.974 RegionMonitoring[364:11017] Ranging Beacon: 77777777-1717-2727-7777-777777777777 and proximity: -1.000000 2015-01-13 10:16:13.977 RegionMonitoring[364:11017] Ranging Beacon: 77777777-1717-2727-7777-777777777777 and proximity: -1.000000
代码看起来正确。 我怀疑发生了什么事情，你只是看到一个新的检测延迟后停止测距。 如果您等待15分钟，您是否看到第二区域进入事件？
在前台测距绝对可以加快信标检测的速度，因为它告诉操作系统做恒定的蓝牙扫描来寻找信标。 测距导致检测在几秒钟内发生。 如果没有测距，iOS会使用15分钟的扫描周期来查找信标，iPhone 5+上的蓝牙硬件filter可能会加速信标。 硬件filter不是100％可靠的，所以无论如何，一次检测的延迟时间最多可延迟15分钟。
详情请看这里： http : //developer.radiusnetworks.com/2013/11/13/ibeacon-monitoring-in-the-background-and-foreground.html
如果应用程序在区域内启动，则每个startMonitoringForRegion不会调用didEnterRegion ，“ didEnterRegion是一个阈值事件，当input一个区域时触发。想一想：一个事件表明您在一个区域内会持续激发。 也许它没有触发的原因是因为当你调用startRangingBeaconsInRegion你已经在这个区域了，所以没有调用didEnterRegion 。