看不到蓝牙设备

问题描述

我正在开发 BluetoothLE，我想在一个列表中看到我周围的设备及其名称，我想查看设备的属性、服务和字符，但我看不到这些设备即使我的手机和耳机的蓝牙都打开了，列表总是空的。

这是我的示例代码：

    private GattCharacteristic gattCharacteristic;
    private BluetoothLEDevice bluetoothLeDevice;
    public List<Deviceinformation> bluetoothLeDevicesList = new List<Deviceinformation>();
    public Deviceinformation selectedBluetoothLeDevice = null;
  
    public bool IsScannerActiwe { get; set; }
    public bool Buttonpressed { get; set; }
    public bool IsConnected { get; set; }


    public static string StopStatus = null;
    public bluetoothleadvertisementwatcher watcher;
    private DeviceWatcher deviceWatcher;        



    public void StartWatcher()
    {
        try
        {
            string[] requestedProperties = { "System.Devices.Aep.DeviceAddress","System.Devices.Aep.IsConnected","System.Devices.Aep.IsPresent","System.Devices.Aep.ContainerId","System.Devices.Aep.DeviceAddress","System.Devices.Aep.Manufacturer","System.Devices.Aep.ModelId","System.Devices.Aep.ProtocolId","System.Devices.Aep.SignalStrength" };

            deviceWatcher =
                      Deviceinformation.CreateWatcher(
                          BluetoothLEDevice.GetDeviceSelectorFromPairingState(false),requestedProperties,DeviceinformationKind.AssociationEndpoint);

            // Register event handlers before starting the watcher.
            // Added,Updated and Removed are required to get all nearby devices
            deviceWatcher.Added += DeviceWatcher_Added;
            deviceWatcher.Updated += DeviceWatcher_Updated;
            deviceWatcher.Removed += DeviceWatcher_Removed;

            // EnumerationCompleted and Stopped are optional to implement.
            deviceWatcher.EnumerationCompleted += DeviceWatcher_EnumerationCompleted;
            deviceWatcher.Stopped += DeviceWatcher_Stopped;


            // Start the watcher.
            deviceWatcher.Start();
            
        }

        catch (Exception ex)
        {

            Console.WriteLine("Exception -> ",ex.Message);
        }


    }

 public List<Deviceinformation> GetBluetoothLEDevicesList()
    {
        try
        {

            return bluetoothLeDevicesList;
        }
        catch (Exception ex)
        {
            Console.WriteLine("Exception Handled -> GetBluetoothLEDevices: " + ex);
            throw ex;
        }
    }

    public List<string> GetBluetoothLEDevices()
    {
        try
        {
            return bluetoothLeDevicesList.Select(x => x.Name).ToList();
        }
        catch (System.Exception ex)
        {
            Trace.WriteLine("Exception Handled -> GetBluetoothLEDevices: " + ex);
            throw ex;
        }
    }

我通过 nrF Connect 应用程序在我的 iphone 上开始了一些新广告，我可以在我的电脑上看到它，但我想将它们全部放在一个列表中并浏览该列表。

这是 Test.cs：

class Test
{
 static void Main(string[] args)
{

    // Since the StartWatcher method is called from within the constructor method,that method will always run whenever an instance is created.

    BLEControllers bLEControllers = new BLEControllers();

   var devices =  bLEControllers.GetBluetoothLEDevicesList();
    foreach (var device in devices)
    {
        if (device != null)
        {
            Console.WriteLine(device.Name);
        }
        Console.WriteLine("empty");
    }
    
    //bLEControllers.ConnectDevice(device);
    //bLEControllers.ConnectDevice();


    Console.Read();
  }
}

每当我运行此代码时，控制台上都不会出现设备名称和空文本，只有 startWatcher 函数起作用并结束。有没有列出所有设备的功能？以及如何查看支持的服务和特征 uuid？有没有办法做到这一点？

解决方法

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