Question

我正在开发一个模块，在这个模块中，我需要获得所有的蓝光设备并连接所选设备。我正在使用这个

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

- (void)centralManagerDidUpdateState:(CBCentralManager *)central

{

  NSString *messtoshow;

    switch (central.state) {

    case CBCentralManagerStateUnknown:
    {
        messtoshow=[NSString stringWithFormat:@"State unknown, update imminent."];
        break;
    }
    case CBCentralManagerStateResetting:
    {
        messtoshow=[NSString stringWithFormat:@"The connection with the system service was momentarily lost, update imminent."];
        break;
    }
    case CBCentralManagerStateUnsupported:
    {
        messtoshow=[NSString stringWithFormat:@"The platform doesn't support Bluetooth Low Energy"];
        break;
    }
    case CBCentralManagerStateUnauthorized:
    {
        messtoshow=[NSString stringWithFormat:@"The app is not authorized to use Bluetooth Low Energy"];
        break;
    }
    case CBCentralManagerStatePoweredOff:
    {
        messtoshow=[NSString stringWithFormat:@"Bluetooth is currently powered off."];
        break;
    }
    case CBCentralManagerStatePoweredOn:
    {
        messtoshow=[NSString stringWithFormat:@"Bluetooth is currently powered on and available to use."];
          [self.blueManager scanForPeripheralsWithServices:nil options:nil];
          CBUUID *deviceInfoUUID = [CBUUID UUIDWithString:@"180A"];
        NSLog(@"connected devices ios 8 code%@  ",[blueManager retrieveConnectedPeripheralsWithServices:@[deviceInfoUUID]]);

}

我的蓝牙已打开并连接到两个设备，我可以从设置中看到，但我没有得到任何设备。我已经签到了

- (void)centralManager:(CBCentralManager *)central didDiscoverPeripheral:(CBPeripheral *)peripheral advertisementData:(NSDictionary *)advertisementData RSSI:(NSNumber *)RSSI {}

方法，但它没有调用。我知道有两个BLE设备已连接到我的设备

获取bluetoooth设备列表ios

0 个答案: