如何通过蓝牙将文件从Android发送到电脑

任何人都可以给出蓝牙服务器客户端的工作示例（从Android到计算机）？

我想将数据从 Android 手机传输到 C# 应用程序。现在我使用下面的 Android 代码，效果很好，但它仍然无法将数据传输到我的计算机（可能无法写入这些数据）。

任何人都可以建议一些应该成功地将消息或文件从客户端 Android 传输到服务器 PC 的代码吗？

Button btnSend = null;
TextView txtPath = null;
Socket s = null;
BluetoothAdapter objBluetoothAdapter = null;
BluetoothDevice device = null;
BluetoothSocket socket = null;
String strPath = "/sdcard/bluetooth/IMG0245A.jpg";
byte [] buffer = null;
@Override public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);

btnSend = (Button)findViewById(R.id.send_button);
btnSend.setOnClickListener(this);
}
   @Override public void onClick(View arg0) {
    // TODO Auto-generated method stub

    String address="MY_COMPUTER_BLUETOOTH_ADDRESS";

    objBluetoothAdapter =  BluetoothAdapter.getDefaultAdapter();
    if(objBluetoothAdapter==null){
            Toast.makeText(this, "BT not supported", Toast.LENGTH_LONG);
            return;
    }

    //objBluetoothAdapter.enable();

    if(!objBluetoothAdapter.isEnabled()){
            Intent enableBT = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
            startActivity(enableBT);
    }
    try{
            device = objBluetoothAdapter.getRemoteDevice(address);

            final UUID uuid= UUID.fromString("00001101-0000-1000-8000-00805F9B34FB");

            try{
                    File f = new File(strPath);
                    buffer = new byte[(int)f.length()];
                    FileInputStream fis = new FileInputStream(f);
                    BufferedInputStream bis = new BufferedInputStream(fis);
                    bis.read(buffer,0,(int)f.length());

                    socket = device.createRfcommSocketToServiceRecord(uuid);
                    Log.d("BT","RF Connection Created"+socket);
                    //objBluetoothAdapter.startDiscovery();
                    for(int i=0;i<3;i++){
                            try{

                                    objBluetoothAdapter.cancelDiscovery();
                                    socket.connect();
                                    Log.d("BT","Socket Connected = "+socket);

                                    break;
                            }catch (Exception e) {
                                    // TODO: handle exception
                                    Log.d("BT","Socket Connection exception = "+e);
                            }
                    }
            }catch (Exception e) {
                    // TODO: handle exception
                    e.printStackTrace();
                    Log.d("BT","Connection NOT OK");
            }

            OutputStream os = socket.getOutputStream();
            os.write(buffer);//,0,buffer.length);
            os.flush();
            os.close();
            socket.close();

    } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
            Toast.makeText(this,"exception "+e, Toast.LENGTH_LONG);

这是我的一些 C# 代码。我使用 32feet 库

ObexListenerContext olContexet = obxlistener.GetContext();
ObexListenerRequest olRequest = olContexet.Request;
String[] pathSplits = olRequest.RawUrl.Split('/');
String filename = pathSplits[pathSplits.Length - 1];
olRequest.WriteFile(Path.GetFullPath(Application.StartupPath) + "\\" + filename);

当我从 android 的蓝牙发送文件时，此代码运行良好，但是当我尝试从 android 代码发送文件时，obxlistener.GetContext() 返回 null 值！

谢谢你的帮助