如何獲得所有可用的藍牙設備android c＃xamarin

Question

我想在列表視圖中獲取所有藍牙設備此代碼在java中工作但我想通過c＃xamarin請求任何幫助嗎？

  private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
  public void onReceive(Context context, Intent intent) {
    String action = intent.getAction();
    if (BluetoothDevice.ACTION_FOUND.equals(action)) {
        // Discovery has found a device. Get the BluetoothDevice
        // object and its info from the Intent.
        BluetoothDevice device = 
        intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
        String deviceName = device.getName();
        String deviceHardwareAddress = device.getAddress(); // MAC address
    }
}

};

Answer 1

首先，在Android設備上獲取默認BluetoothAdapter的實例，並檢查它是否已啟用：

BluetoothAdapter adapter = BluetoothAdapter.DefaultAdapter;  
if(adapter == null)  
    throw new Exception("No Bluetooth adapter found.");

if(!adapter.IsEnabled)  
    throw new Exception("Bluetooth adapter is not enabled.");

然后獲取代表您要連接的物理設備的BluetoothDevice實例。 您可以使用適配器的BondedDevices集合獲取當前配對設備的列表。 我使用一些簡單的LINQ來找到我正在尋找的設備：

BluetoothDevice device = (from bd in adapter.BondedDevices  
                          where bd.Name == "NameOfTheDevice" select bd).FirstOrDefault();

if(device == null)  
    throw new Exception("Named device not found.");

最后，使用設備的CreateRfCommSocketToServiceRecord方法，該方法將返回可用於連接和通信的BluetoothSocket 。 請注意， UUID下面指定是標准的UUID為SPP ：

_socket = device.CreateRfcommSocketToServiceRecord(UUID.FromString("00001101-0000-1000-8000-00805f9b34fb"));  
await _socket.ConnectAsync();  

現在設備已連接，通過BluetoothSocket對象上的InputStream和OutputStream屬性進行通信。這些屬性是標准的.NET Stream對象，可以完全按照您的預期使用：

// Read data from the device
await _socket.InputStream.ReadAsync(buffer, 0, buffer.Length);

// Write data to the device
await _socket.OutputStream.WriteAsync(buffer, 0, buffer.Length);