Iphone检测蓝牙设备

我正在做一个iPhone应用程序，我需要得到附近的蓝牙设备。 我使用的是CoreBluetooth框架，但不起作用。我知道这个框架只适用于低能耗的蓝牙，所以我买了一个支持低能耗的蓝牙4.0USB适配器。我正在iPhone 5上测试这个应用程序。这是我的密码

- (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."];
        [mgr scanForPeripheralsWithServices:[NSArray arrayWithObject:[CBUUID UUIDWithString:@"180A"]] options:[NSDictionary dictionaryWithObject:[NSNumber numberWithBool:NO] forKey:CBCentralManagerScanOptionAllowDuplicatesKey]];

        [mgr retrieveConnectedPeripherals];


        break;
    }               
}
NSLog(messtoshow); 
}   

- (void)centralManager:(CBCentralManager *)central didDiscoverPeripheral:
(CBPeripheral *)peripheral advertisementData:(NSDictionary *)advertisementData RSSI:(NSNumber *)RSSI
{
NSLog(@"Did discover peripheral. peripheral: %@ rssi: %@, UUID: %@ advertisementData: %@ ", peripheral, RSSI, peripheral.UUID, advertisementData);
[mgr retrievePeripherals:[NSArray arrayWithObject:(id)peripheral.UUID]];
}

-(void)centralManager:(CBCentralManager *)central didRetrievePeripherals:(NSArray *)peripherals{
NSLog(@"This is it!");
}

此打印“Bluetooth当前已通电并可用”，但找不到我的usb Bluetooth或附近的任何其他Bluetooth设备。我需要一个解决办法，我快疯了。

---

多谢各位

您确定180A是正确的服务吗

如果没有，请尝试：

[mgr scanForPeripheralsWithServices:nil options:[NSDictionary dictionaryWithObject:[NSNumber numberWithBool:NO] forKey:CBCentralManagerScanOptionAllowDuplicatesKey]];

你的代码看起来不错

---

如果他们的应用程序无法发现您的蓝牙设备，请确保您的蓝牙设备已打开并且正在进行广告宣传。

我已尝试了所有posibles服务，并尝试将服务设置为零。它不起作用。我放弃了，但谢谢你。你检查过这个吗：？我最后遇到了类似的问题。你找到解决办法了吗？