iPhone4S在信标检测时出现异常行为

Question

我正在开发包含ibeacon检测的应用程序。
但是，当设备在后台B后面接收信标A时，什么也没发生。

条件
1. iPhone4S（iPhone5一切正常）
2.应用程序在后台
3.在检测到另一个信标（与另一个信标区不同）之后。

有人能帮我吗？ 任何建议，将不胜感激。

感谢您的回复。 进入信标A（第二个）的区域比进入信标B（第一个）的区域大约延迟30秒，而我等待了大约20秒的本地通知将由“信标A”触发。 （Beacon-A区域和Beacon-B区域部分重叠。我在重叠的区域中等待。）

这是一段代码。

- (void)startBeaconMonitoring
{
    if ([CLLocationManager respondsToSelector:@selector(isMonitoringAvailableForClass:)] && [CLLocationManager isMonitoringAvailableForClass:[CLBeaconRegion class]] && !self.locationManager) {
        self.locationManager = [CLLocationManager new];
        self.locationManager.delegate = self;

        _storeUUID = [[NSUUID alloc] initWithUUIDString:@"MY UUID HERE"];
        CLBeaconRegion *region = [[CLBeaconRegion alloc] initWithProximityUUID:_storeUUID major:CENSOR_TYPE_A  identifier:@"MY ID1"];
        region.notifyOnExit  = YES;
        region.notifyOnEntry = YES;

        CLBeaconRegion *region2 = [[CLBeaconRegion alloc] initWithProximityUUID:_storeUUID major:CENSOR_TYPE_B identifier:@"MY ID2"];
        region.notifyOnExit  = YES;
        region.notifyOnEntry = YES;

        [self.locationManager startMonitoringForRegion:region];
        [self.locationManager startMonitoringForRegion:region2];
    }
}

# pragma CLLocationManagerDelegate
- (void)locationManager:(CLLocationManager *)manager didStartMonitoringForRegion:(CLRegion *)region
{
    [self.locationManager requestStateForRegion:region];
}

- (void)locationManager:(CLLocationManager *)manager didEnterRegion:(CLRegion *)region
{
    if ([region isMemberOfClass:[CLBeaconRegion class]] && [CLLocationManager isRangingAvailable]) {
        CLBeaconRegion *beacon = (CLBeaconRegion*)region;
        [self.locationManager startRangingBeaconsInRegion:beacon];
    }
}

- (void)locationManager:(CLLocationManager *)manager didDetermineState:(CLRegionState)state forRegion:(CLRegion *)region
{
    switch (state) {
        case CLRegionStateInside:
            if ([region isMemberOfClass:[CLBeaconRegion class]] && [CLLocationManager isRangingAvailable]) {
                CLBeaconRegion *beacon = (CLBeaconRegion*)region;
                int major = [beacon.major intValue];
                [self.locationManager startRangingBeaconsInRegion:beacon];
            }
            break;
        case CLRegionStateOutside:
        case CLRegionStateUnknown:
        default:
            break;
    }
}

- (void)locationManager:(CLLocationManager *)manager didExitRegion:(CLRegion *)region
{
    if ([region isMemberOfClass:[CLBeaconRegion class]] && [CLLocationManager isRangingAvailable]) {
        [self.locationManager stopRangingBeaconsInRegion:(CLBeaconRegion *)region];
    }
}

- (void)locationManager:(CLLocationManager *)manager didChangeAuthorizationStatus:(CLAuthorizationStatus)status
{
    switch (status) {
        case kCLAuthorizationStatusAuthorized:
            if (_locationDisabled) {
                _locationDisabled = NO;
                self.locationManager = nil;
                [self startBeaconMonitoring];
            }
            break;
        case kCLAuthorizationStatusRestricted:
        case kCLAuthorizationStatusNotDetermined:
            break;
        case kCLAuthorizationStatusDenied:
            _locationDisabled = YES;
            break;
        default:
            break;
    }
}

- (void)locationManager:(CLLocationManager *)manager didRangeBeacons:(NSArray *)beacons inRegion:(CLBeaconRegion *)region
{
    if (beacons.count > 0 && !_regionExit) {
        for (CLBeacon *beacon in beacons) {
            if ([beacon.proximityUUID.UUIDString isEqualToString:_storeUUID.UUIDString]) {
                NSString *censorType = [NSString stringWithFormat:@"%@", beacon.major];
                if ([censorType intValue] == CENSOR_TYPE_A) {
                    // DO ACTION A
                } else if ([censorType intValue] == CENSOR_TYPE_B) {
                    // DO ACTION B
                }
            }
        }
    }
}

Answer 1

看来iOS 8上的iPhone4s在检测背景中快速区域变化方面存在问题。 我的测试表明，如果您松开第一个区域超过1分钟并输入新区域，则立即检测到该区域。 但是，如果您在不到1分钟的时间内松开区域，iPhone 4s将无法识别它，您将不得不等待（大约15分钟）进行完整的蓝牙扫描才能注意到它。 我采取了变通方法，即在丢失第一个区域60秒后开始测距，如果我在60秒内输入下一个信标，测距将检测到它。