iOS版无法在地面脱颖而出再次找到iBeacon显示(iOS Can not find the iB

嗨〜我正在学习用CLLocationManager检测iBeacon显示。我读这篇文章： http://developer.radiusnetworks.com/2013/11/13/ibeacon-monitoring-in-the-background-and-foreground.html它说，startRangingBeaconsInRegion将使系统扫描灯塔每一秒。我测试，它是正确的。

但是，一个问题发生，如果程序只无startRangingBeaconsInRegion执行startMonitoringForRegion。

我的程序可以找到灯塔我第一次开始的灯塔硬件后，我停止信标的职能A anaylse didExitRegion被调用。但之后我开始信标第二次，程序无法找到它在所有（执行didEnterRegion）。我必须等待1小时。

我使用的测试平台的硬件与iOS 8.1.2和radBeacon USB iPhone 5S。这里是我的代码。

#import "ViewController.h"
#import <CoreLocation/CoreLocation.h>

@interface ViewController () <CLLocationManagerDelegate>
@property (retain, nonatomic) IBOutlet UITextView *textView;
@property (strong, nonatomic) NSMutableString *myLog;
@property (strong, nonatomic) CLLocationManager *locationManager;
@property (strong, nonatomic) CLBeaconRegion *beaconRegion;
@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    [self startBeaconMonitoring];
}

- (void)startBeaconMonitoring {
    _locationManager = [[CLLocationManager alloc] init];
    _locationManager.desiredAccuracy = kCLLocationAccuracyNearestTenMeters;
    _locationManager.delegate = self;

    [_locationManager performSelector:@selector(requestAlwaysAuthorization)];

    [self userGeofencingPreferencesWereUpdatedWithNotification:nil];

    [self updateLogWithString:@"start the app"];
}

- (void) userGeofencingPreferencesWereUpdatedWithNotification: (NSNotification *) notification
{
    if (1) {
        NSUUID *proximityUUID = [[NSUUID UUID] initWithUUIDString:@"EEF45689-BBE5-4FB6-9E80-41B78F6578E2"];
        _beaconRegion = [[CLBeaconRegion alloc]
                         initWithProximityUUID:proximityUUID
                         identifier:@"1"];
        _beaconRegion.notifyEntryStateOnDisplay = YES;
        [_locationManager startMonitoringForRegion:_beaconRegion];
        //[_locationManager startRangingBeaconsInRegion:beaconRegion];
        //[_locationManager stopUpdatingLocation];
    }
}

- (void) locationManager:(CLLocationManager *)manager didEnterRegion:(CLRegion *)region
{
    [self updateLogWithString:@"enter"];
    NSLog(@"enter");
}

- (void) locationManager:(CLLocationManager *)manager didExitRegion:(CLRegion *)region
{
    [self updateLogWithString:@"exit"];
    NSLog(@"exit");
}

- (void)locationManager:(CLLocationManager *)manager
        didRangeBeacons:(NSArray *)beacons
               inRegion:(CLBeaconRegion *)region {
    //NSLog(@"range");
}

- (void)dealloc {
    [_textView release];
    [_myLog release];
    [_locationManager release];
    [_beaconRegion release];
    [super dealloc];
}

- (NSMutableString *)myLog {
    if (!_myLog) {
        _myLog = [[NSMutableString alloc] init];
    }
    return _myLog;
}

- (void) updateLogWithString:(NSString*)newLog {
    NSDate *now = [NSDate date];
    NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
    dateFormatter.dateFormat = @"hh:mm:ss";
    [dateFormatter setTimeZone:[NSTimeZone systemTimeZone]];
    NSString * logWithTime = [NSString stringWithFormat:@"%@---%@\n",[dateFormatter stringFromDate:now], newLog];
    [self.myLog appendString:logWithTime];
    self.textView.text = self.myLog;
    [dateFormatter release];
}
@end

我发现了一些意外，这解决了我的问题。当我使用一个名为转播一个iOS应用模拟iBeacon显示，它触发iBeacon显示检测APP很快这在其他iOS设备上运行在前台，后台不管或屏幕关闭。当我使用拉德灯塔USB，故障依旧。我测试我所有的4拉德灯塔个USB同样的事情发生。看来，由拉德灯塔USB发送的BLE消息是从由iOS的模拟有点不同（我只是尝试了APP广播公司）。而iOS8上对待他们在某些情况下不同。

我拉德灯塔个USB 2.0是版本。