目标 C 中的 didRangeBeacons 中的信标数组值为空

Question

在我的应用程序中，我正在寻找信标并想要计算距离，这两天我遇到了一个问题，即 CCLocationManager 委托函数返回空信标数组。我尝试了 CBCentralManagerDelegate 函数，我得到了信标列表。在 didRangeBeacons 方法中给出了空数组帮助我。以下是我尝试过的代码

代码：

@interface ViewController ()<CBCentralManagerDelegate,CLLocationManagerDelegate>
{
    NSMutableData *dat;
    CLBeaconRegion *clBeconRegion;

    CLLocationManager *locManager;
}
@property (strong,nonatomic) CBCentralManager *cbcManager;
- (IBAction)scanBtn:(id)sender;
@end

@implementation ViewController

- (void)viewDidLoad{
    [super viewDidLoad];

    self.cbcManager=[[CBCentralManager alloc] initWithDelegate:self queue:nil];
    locManager=[[CLLocationManager alloc] init];
    locManager.delegate=self;
    [self initRegion];
    clBeconRegion.notifyEntryStateOnDisplay=YES;
    [locManager requestAlwaysAuthorization];
    [self locationManager:locManager didStartMonitoringForRegion:clBeconRegion];
}
-(void)centralManager:(CBCentralManager *)central didDiscoverPeripheral:(CBPeripheral *)peripheral advertisementData:(NSDictionary *)advertisementData RSSI:(NSNumber *)RSSI
{
    NSLog(@"List of peripheral %@",peripheral);
    NSLog(@"List of advertisementData %@ %@",advertisementData,RSSI);

}

-(void)initRegion{
    NSUUID *uuid=[[NSUUID alloc]initWithUUIDString:@"XXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX"];
    clBeconRegion=[[CLBeaconRegion alloc]initWithProximityUUID:uuid identifier:@"BluetoothExample"];
    clBeconRegion.notifyEntryStateOnDisplay=YES;
    clBeconRegion.notifyOnEntry=YES;
    clBeconRegion.notifyOnExit=YES;
    [locManager startMonitoringForRegion:clBeconRegion];
}
-(void)centralManager:(CBCentralManager *)central didConnectPeripheral:(CBPeripheral *)peripheral
{
    NSLog(@"didConnectPeripheral");
    [peripheral discoverServices:nil];
}

-(void)locationManager:(CLLocationManager *)manager didStartMonitoringForRegion:(CLRegion *)region{

    [locManager startRangingBeaconsInRegion:clBeconRegion];
}
-(void)locationManager:(CLLocationManager *)manager didEnterRegion:(CLRegion *)region{
    NSLog(@"Entered Region");
     [locManager startRangingBeaconsInRegion:clBeconRegion];
}
-(void)locationManager:(CLLocationManager *)manager didExitRegion:(CLRegion *)region{
    NSLog(@"Exit Region");
    [locManager stopRangingBeaconsInRegion:clBeconRegion];
}
-(void)locationManager:(CLLocationManager *)manager didRangeBeacons:(NSArray *)beacons inRegion:(CLBeaconRegion *)region{
    NSLog(@"beacons %@ last %@",beacons,[region proximityUUID]);
    CLBeacon *beacon=[[CLBeacon alloc]init];
    beacon=[beacons lastObject];
     NSLog(@"min %@ maj %@",beacon.minor,beacon.major);
}
- (IBAction)scanBtn:(id)sender
{
    NSDictionary *options = [NSDictionary dictionaryWithObjectsAndKeys:[NSNumber numberWithBool:NO], CBCentralManagerScanOptionAllowDuplicatesKey, nil];
    [self.cbcManager scanForPeripheralsWithServices:nil options:options];
    NSLog(@"scan clicked");
}

我已经修复了 NSLocationAlwaysUsageDescription info.plist。

我有一个真正的信标和 ipad 迷你设备。

此代码在所有信标查找示例中都给出。帮助我在这里做错了什么。

Answer 1

几点：

• 如果您没有收到测距回调，则 ProximityUUID 可能不正确。使用现成的信标检测器，如 Locate，并验证您可以检测到信标，并且 ProximityUUID 是 CLBeaconRegion 设置为检测的内容。

• 通过转到设置 ->（您的应用名称）验证您已正确获得位置权限，并验证位置设置为“始终”

• 检测 iBeacon 时无需使用 CoreBluetooth。您应该删除所有带有 CB 前缀的类的行。虽然此代码将为您提供附近的 iBeacon 蓝牙设备列表，但它不会让您读取信标标识符。您必须使用 CoreLocation 来执行此操作。

• 此方法调用由 CoreLocation 框架进行，不应手动调用。它应该被删除： [self locationManager:locManagerdidStartMonitoringForRegion:clBeconRegion];