iOS 下 altBeacons 上的 Major 和 Minor

Posted 2023-03-05

【中文标题】iOS 下 altBeacons 上的 Major 和 Minor

【英文标题】：Major and Minor on altBeacons under iOS

【发布时间】：2015-02-18 11:30:17

【问题描述】：

有没有办法找出 altBeacon 的主要和次要值？ 我正在使用这个库 (https://github.com/CharruaLab/AltBeacon) 来检测附近的 BLE 设备（无论它是否是信标）。 检测到信标，我知道它们的 uuid。 我可以使用 ios CoreBluetooth 框架提取主要和次要值吗？

更新： 代码看起来不错。看起来找出主要或次要的唯一方法是请求信标的数据，因为它在下面接受的答案中完成。但信标本身并不一定会在这种情况下回复您。

【参考方案1】：

仅适用于 iBeacon：

---

覆盖下面的CLLocationManager委托方法，当您能够检测到信标时，将调用此方法。

-(void)locationManager:(CLLocationManager*)manager
       didRangeBeacons:(NSArray*)beacons
              inRegion:(CLBeaconRegion*)region 
    // Beacon found!
    
    CLBeacon *foundBeacon = [beacons firstObject];
    
    // You can retrieve the beacon data from its properties
    NSString *uuid = foundBeacon.proximityUUID.UUIDString;
    NSString *major = [NSString stringWithFormat:@"%@", foundBeacon.major];
    NSString *minor = [NSString stringWithFormat:@"%@", foundBeacon.minor];

要使用核心定位框架检测信标，您需要在viewDidLoad 方法中添加以下代码。

- (void)viewDidLoad 
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    
    // Initialize location manager and set ourselves as the delegate
    self.locationManager = [[CLLocationManager alloc] init];
    self.locationManager.delegate = self;
    
    // Create a NSUUID with the same UUID as the broadcasting beacon
    NSUUID *uuid = [[NSUUID alloc] initWithUUIDString:@"XXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX"];
    
    // Setup a new region with that UUID and same identifier as the broadcasting beacon
    self.myBeaconRegion = [[CLBeaconRegion alloc] initWithProximityUUID:uuid
                                                             identifier:@"com.app.identifier"];
    
    // Tell location manager to start monitoring for the beacon region
    [self.locationManager startMonitoringForRegion:self.myBeaconRegion];
    
    // Check if beacon monitoring is available for this device
    if (![CLLocationManager isMonitoringAvailableForClass:[CLBeaconRegion class]]) 
        
        UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Monitoring not available" message:nil delegate:nil cancelButtonTitle:@"Ok" otherButtonTitles: nil]; 
        [alert show]; 
    

---

对于蓝牙设备：

---

用两个代理 CBCentralManagerDelegate 和 CBPeripheralDelegate 扩展视图控制器

在viewDidLoad 中创建CBCentralManager 对象。

_centralManager = [[CBCentralManager alloc] initWithDelegate:self queue:nil];

并覆盖以下方法（scan 方法除外）：

- (void)centralManagerDidUpdateState:(CBCentralManager *)central 
    if (central.state != CBCentralManagerStatePoweredOn) 
        return;
    
    // The state must be CBCentralManagerStatePoweredOn...
    // ... so start scanning
    [self scan];


- (void) scan 
    
    // UUID for peripheral services
    [self.centralManager scanForPeripheralsWithServices:[NSArray arrayWithObject:[CBUUID UUIDWithString:@"XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXX"]] options:nil];
    NSLog(@"Scanning started");


- (void)centralManager:(CBCentralManager *)central didDiscoverPeripheral:(CBPeripheral *)peripheral advertisementData:(NSDictionary *)advertisementData RSSI:(NSNumber *)RSSI 
    
    NSLog(@"Discovered %@ at %@", peripheral.name, RSSI);
    
    if (self.discoveredPeripheral != peripheral) 
        
        // Save a local copy of the peripheral, so CoreBluetooth doesn't get rid of it
        self.discoveredPeripheral = peripheral;
        
        // And connect
        NSLog(@"Connecting to peripheral %@", peripheral.UUID);
        [self.centralManager connectPeripheral:peripheral options:nil];
    


- (void)centralManager:(CBCentralManager *)central didConnectPeripheral:(CBPeripheral *)peripheral 
    NSLog(@"Peripheral Connected");
    
    // Stop scanning
    [self.centralManager stopScan];
    NSLog(@"Scanning stopped");
    
    // Make sure we get the discovery callbacks
    peripheral.delegate = self;
    [peripheral discoverServices:nil];

【讨论】：

据我所知，这仅适用于 iBeacons。因为 altBeacons 触发 BT 框架委托。

仅供参考：如果 altBeacons 是 iBeacon，则它必须根据 Apple 标准和 MFI 程序支持 CoreLocation API。请检查 altBeacons API 并告诉我。

看看编辑。我检查了altBeacons git repo，没有关于主要和次要的详细信息。它以字节为单位发布数据，可以从上述方法轻松获取，如果设备可以通过覆盖核心蓝牙的更多委托方法来提供服务，您也可以获取服务。