在socket編程中，inputstream.read（）不能在android中讀取

Question

我正在用socket編寫簡單的聊天應用程序。 我正在連接到我的本地服務器，如果連接沒有問題，它在我的textview中顯示“已連接”，它顯示了這一點。
我的問題是，當我將兩個設備連接到我的服務器並嘗試使用其中一個發送按摩時，另一個不通過inputstream.read（）獲得按摩並且它阻止了代碼。
這是我的代碼。 我很感激anybodys的幫助。

public class CommsThread extends Thread {<br>
    static Context context;<br>

    private Socket socket;
    private InputStream inputStream;
    private OutputStream outputStream;

    public CommsThread(Socket sock) {
        socket = sock;
        InputStream tmpIn = null;
        OutputStream tmpOut = null;
        try {
            tmpIn = socket.getInputStream();
            tmpOut = socket.getOutputStream();
        } catch (IOException e) {
            Log.d("SocketChat", e.getLocalizedMessage());
        }
        inputStream = tmpIn;
        outputStream = tmpOut;
    }

    public void run() {
        byte[] buffer = new byte[1024];
        int bytes;
        while (true) {
            try {
                bytes = inputStream.read(buffer);
                MainActivity.UIupdater.obtainMessage(0, bytes, -1, buffer).sendToTarget();
            } catch (IOException e) {
                break;
            }
        }
    }

    public void write(byte[] bytes) {
        try {
            outputStream.write(bytes);
            outputStream.flush();
        } catch (IOException e) {
        }
    }

    public void cancel() {
        try {
            socket.close();
        } catch (IOException e) { }
    }
}

public class MainActivity extends Activity {<br>
    static final String NICKNAME = "Wei-Meng";<br>
    InetAddress serverAddress;<br>
    Socket socket;<br>
    static TextView txtMessagesReceived;<br>
    EditText txtMessage;<br>
    CommsThread commsThread;<br>

    static Handler UIupdater = new Handler() {
        @Override
        public void handleMessage(Message msg) {
            int numOfBytesReceived = msg.arg1;
            byte[] buffer = (byte[]) msg.obj;
            String strReceived = new String(buffer);
            strReceived = strReceived.substring(0, numOfBytesReceived);
            txtMessagesReceived.setText(txtMessagesReceived.getText().toString() + strReceived);
        }
    };

    private class CreateCommThreadTask extends AsyncTask<Void, Integer, Void> {
        @Override
        protected Void doInBackground(Void... params) {
            try {
                serverAddress = InetAddress.getByName("172.20.10.3");
                socket = new Socket(serverAddress, 80);
                commsThread = new CommsThread(socket);
                commsThread.start();
                if (socket.isConnected())
                    txtMessagesReceived.setText("connected");
                sendToServer(NICKNAME);
            } catch (UnknownHostException e) {
                Log.d("Sockets", e.getLocalizedMessage());
            } catch (IOException e) {
                Log.d("Sockets", e.getLocalizedMessage());
            }
            return null;
        }
    }
    private class WriteToServerTask extends AsyncTask<byte[], Void, Void> {
        protected Void doInBackground(byte[]...data) {
            commsThread.write(data[0]);
            return null;
        }
    }
    private class CloseSocketTask extends AsyncTask<Void, Void, Void> {
        @Override
        protected Void doInBackground(Void... params) {
            try {
                socket.close();
            } catch (IOException e) {
                Log.d("Sockets", e.getLocalizedMessage());
            }
            return null;
        }
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        CommsThread.context = this;

        txtMessage = (EditText) findViewById(R.id.txtMessage);
        txtMessagesReceived = (TextView) findViewById(R.id.txtMessagesReceived);
    }

    public void onClickSend(View view) {
        sendToServer(txtMessage.getText().toString());
    }
    private void sendToServer(String message) {
        byte[] theByteArray = message.getBytes();
        new WriteToServerTask().execute(theByteArray);
    }
    @Override
    public void onResume() {
        super.onResume();
        new CreateCommThreadTask().execute();
    }
    @Override
    public void onPause() {
        super.onPause();
        new CloseSocketTask().execute();
    }
}

這是我的服務器代碼：

Answer 1

這樣做

String hostName = args[0];
int portNumber = Integer.parseInt(args[1]);

try (
    Socket echoSocket = new Socket(hostName, portNumber);
    PrintWriter out =
        new PrintWriter(echoSocket.getOutputStream(), true);
    BufferedReader in =
        new BufferedReader(
            new InputStreamReader(echoSocket.getInputStream()));
    BufferedReader stdIn =
        new BufferedReader(
            new InputStreamReader(System.in))
)