如何在Android中读取套接字输入流

can anybody tell me how to read socket input stream. Here is my code.

if (!serverIpaddress.equals(""))
        {
            try
            {
                InetAddress serverAddr = InetAddress.getByName(serverIpaddress);
                Log.i("ClientActivity","ConnecTing...");
                Socket socket = new Socket(serverAddr,5777);

                try {
                    Log.i("ClientActivity","Sending command.");
                    PrintWriter out = new PrintWriter(new BufferedWriter(new OutputStreamWriter(socket
                            .getOutputStream())),truE);
                    // where you issue the commands
                    out.println("<maplist />");
                    Log.i("ClientActivity","Sent.");

                    input = new BufferedReader(new InputStreamReader(socket.geTinputStream()));                     
                    buffer = new StringBuilder();

                    new Thread(new Runnable() {

                        @Override
                        public void run() {

                            try 
                            {
                                buffer.append(input.readLine());
                            } catch (IOException E) {
                                // TODO Auto-generated catch block
                                e.printStackTrace();
                            }
                        }
                    }).start();    
                    this.WriteXMLResponse(buffer.toString());

                } catch (Exception E) {
                    Log.e("ClientActivity","S: Error",E);
                }

在我的代码和运行方法中,我正在读取输入流,发生异常.其中说java.net.socketException：错误的文件号.

如果我使用while循环我的应用程序冻结.
任何建议都是有意义的.
谢谢