Android手机通过与PC通讯的有关问题

public class MainActivity extends Activity {    /** Called when the activity is first created. */    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        new Thread() {            @Override            public void run() {                beginRun();            }        };    }        @Override    protected void onStop() {        // TODO Auto-generated method stub        super.onStop();        MainService.ISRUN = false;    }    private void beginRun() {        try {            ServerSocket serverSocket = new ServerSocket(5566);            Socket client = serverSocket.accept();            new Thread(new SocketThread(client)).start();        } catch (IOException e) {            // TODO Auto-generated catch block            e.printStackTrace();        }    }}

public class SocketThread implements Runnable {    private static final String TAG = "SocketThread";    private static final int MAX_BUFFER_BYTES = 2048;    private static final String ENCODING = "UTF-8";    private Socket client;    public SocketThread(Socket client) {        this.client = client;    }    @Override    public void run() {        Log.d(TAG, "---服务线程启动...");        BufferedInputStream in = null;        BufferedOutputStream out = null;        try {            in = new BufferedInputStream(client.getInputStream());            out = new BufferedOutputStream(client.getOutputStream());            while (MainService.ISRUN) {                if (!client.isConnected())                    break;                String cmd = readCMD(in);                System.out.println("收到：" + cmd);            }        } catch (IOException e) {            // TODO Auto-generated catch block            e.printStackTrace();        } finally {            try {                out.close();                in.close();            } catch (IOException e) {                // TODO Auto-generated catch block                e.printStackTrace();            }            Log.d(TAG, "----线程关闭");        }    }    private String readCMD(InputStream in) {        byte[] bufferBytes = new byte[MAX_BUFFER_BYTES];        String cmd = null;        try {            int readBytesCount = in.read(bufferBytes);            cmd = new String(bufferBytes, 0, readBytesCount);        } catch (IOException e) {            // TODO Auto-generated catch block            e.printStackTrace();        }        return cmd;    }}

public class Main {    private static final String HOST = "127.0.0.1";    private static final int PORT = 55666;    private static Socket pc;    public static void main(String[] args) {        try {            InetAddress address = InetAddress.getByName(HOST);            pc = new Socket(address, PORT);            BufferedOutputStream out = new BufferedOutputStream(                    pc.getOutputStream());            int i = 1;            while (true) {                String msg = i++ + "你妹的";//                out.write(msg.getBytes());                out.write(3);                out.flush();                Thread.sleep(3000);            }        } catch (Exception e) {            // TODO Auto-generated catch block            e.printStackTrace();        }    }}