将android套接字活动转换为片段

Question

我目前正在尝试将android套接字活动转换为android套接字片段。但是，将所有代码导出到片段方法后，应用程序总是在按下连接按钮时停止工作。以下是mainActivity的代码

public class MainActivity extends Activity {

    private static TextView textResponse;
    private EditText editTextAddress, editTextPort;
    private Button buttonConnect;
    private String message = "Hi client!";
    private static String kq = "";
    private ClientTask myClientTask;
    private OnListener listener;
    private static boolean flag = true;
    Socket socket = null;

    public interface OnListener {
        void listener(String text);
    }

    public void addListener(OnListener listener) {
        this.listener = listener;
    }

    static Handler handler = new Handler() {
        @Override
        public void handleMessage(Message msg) {
            if (flag) {
                kq += msg.obj.toString() + "\r\n";
                textResponse.setText(kq);
            }
        }
    };

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

        editTextAddress = (EditText) findViewById(R.id.address);
        editTextPort = (EditText) findViewById(R.id.port);
        buttonConnect = (Button) findViewById(R.id.connect);
        textResponse = (TextView) findViewById(R.id.response);

        buttonConnect.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                myClientTask = new ClientTask(editTextAddress.getText()
                        .toString(), Integer.parseInt(editTextPort.getText()
                        .toString()));
                myClientTask.execute();
            }
        });

    }

    public class ClientTask extends AsyncTask<String, String, String> implements
            OnListener {

        String dstAddress;
        int dstPort;
        PrintWriter out1;


        ClientTask(String addr, int port) {
            dstAddress = addr;
            dstPort = port;
        }

        @Override
        protected void onProgressUpdate(String... values) {
            // TODO Auto-generated method stub
            super.onProgressUpdate(values);

        }

        @Override
        protected String doInBackground(String... params) {
            // TODO Auto-generated method stub

            try {

                socket = new Socket(dstAddress, dstPort);
                out1 = new PrintWriter(socket.getOutputStream(), true);
                //out1.print("Hello server!");
                out1.flush();

                BufferedReader in1 = new BufferedReader(new InputStreamReader(
                        socket.getInputStream()));
                do {
                    try {
                        if (!in1.ready()) {
                            if (message != null) {
                                MainActivity.handler.obtainMessage(0, 0, -1,
                                        "Server: " + message).sendToTarget();
                                message = "";
                            }
                        }
                        int num = in1.read();
                        message += Character.toString((char) num);
                    } catch (Exception classNot) {
                    }

                } while (!message.equals("bye"));

                try {
                    sendMessage("bye");
                } catch (Exception e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                } finally {
                    socket.close();
                }

            } catch (IOException e) {
                e.printStackTrace();
            }
            return null;
        }

        @Override
        protected void onPostExecute(String result) {
            try {
                if (socket.isClosed()) {
                    flag = false;
                }
            } catch (Exception e) {
                Toast.makeText(getApplicationContext(), "Lỗi nhập!", Toast.LENGTH_LONG).show();
            }

            super.onPostExecute(result);
        }

        @Override
        public void listener(String text) {
            // TODO Auto-generated method stub
            sendMessage(text);
        }

        void sendMessage(String msg) {
            try {
                out1.print(msg);
                out1.flush();
                if (!msg.equals("bye"))
                    MainActivity.handler.obtainMessage(0, 0, -1, "Me: " + msg)
                            .sendToTarget();
                else
                    MainActivity.handler.obtainMessage(0, 0, -1,
                            "Ngắt kết nối!").sendToTarget();
            } catch (Exception ioException) {
                ioException.printStackTrace();
            }
        }

    }

    public void send(View v) {
        addListener(myClientTask);
        if (listener != null)
            listener.listener(((EditText) findViewById(R.id.editText1))
                    .getText().toString());
    }

    @Override
    protected void onDestroy() {
        // TODO Auto-generated method stub
        try {
            if (listener != null)
                listener.listener("bye");
            socket.close();
        } catch (Exception e) {
            // TODO: handle exception
        }
        super.onDestroy();
    }

    @Override
    protected void onStop() {
        // TODO Auto-generated method stub
        try {
            if (listener != null)
                listener.listener("bye");
            socket.close();
        } catch (Exception e) {
            // TODO: handle exception
        }
        super.onStop();
    }

    public void onClick(View v) {
        Intent intent = new Intent(getApplicationContext(), MainActivity.class);
        startActivity(intent);
        finish();
    }

}

这是片段

中android socket的代码

public class blank extends Fragment {

private static final String ARG_PARAM1 = "param1";
private static final String ARG_PARAM2 = "param2";

// TODO: Rename and change types of parameters
private String mParam1;
private String mParam2;

private static TextView textResponse;
private static EditText editTextAddress, editTextPort;
private static Button buttonConnect;
private String message = "Hi Nice to meet you Client";
private static String kq= "";
private static boolean flag=true;
private OnListener listener;
private ClientTask myClientTask;
Socket socket = null;

public interface OnListener {
    void listener(String text);
}

public void addListener(OnListener listener) {
    this.listener = listener;
}

static Handler handler = new Handler() {
    @Override
    public void handleMessage(Message msg) {
        if (flag) {
            kq += msg.obj.toString() + "\r\n";
            textResponse.setText(kq);
        }
    }
};

private OnFragmentInteractionListener mListener;

public blank() {
    // Required empty public constructor
}

// TODO: Rename and change types and number of parameters
public static blank newInstance(String param1, String param2) {
    blank fragment = new blank();
    Bundle args = new Bundle();
    args.putString(ARG_PARAM1, param1);
    args.putString(ARG_PARAM2, param2);
    fragment.setArguments(args);
    return fragment;
}

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    if (getArguments() != null) {
        mParam1 = getArguments().getString(ARG_PARAM1);
        mParam2 = getArguments().getString(ARG_PARAM2);
    }
}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    // Inflate the layout for this fragment
    View view = (View) inflater.inflate(R.layout.fragment_blank, container, false);

    editTextAddress = (EditText)view.findViewById(R.id.address);
    editTextPort = (EditText)view.findViewById(R.id.port);
    buttonConnect = (Button)view.findViewById(R.id.connect);
    textResponse = (TextView)view.findViewById(R.id.response);



    return view;
}

@Override
public void onActivityCreated(Bundle savedInstanceState) {

    buttonConnect.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            myClientTask = new ClientTask(editTextAddress.getText()
                    .toString(), Integer.parseInt(editTextAddress.getText()
                    .toString()));
            myClientTask.execute();
        }
    });

    super.onActivityCreated(savedInstanceState);
}

public class ClientTask extends AsyncTask<String, String, String> implements
        OnListener {

    String dstAddress;
    int dstPort;
    PrintWriter out1;

    ClientTask(String addr, int port) {
        dstAddress = addr;
        dstPort = port;
    }

    @Override
    protected void onProgressUpdate(String... values) {
        super.onProgressUpdate(values);
    }

    @Override
    protected String doInBackground(String... params) {

        try {

            socket = new Socket(dstAddress, dstPort);
            out1 = new PrintWriter(socket.getOutputStream(), true);
            out1.flush();

            BufferedReader in1 = new BufferedReader(new InputStreamReader(
                    socket.getInputStream()
            ));
            do {
                try {
                    if (!in1.ready()) {
                        if (message != null) {
                            blank.handler.obtainMessage(0, 0, -1,
                                    "Server : " + message).sendToTarget();
                            message = "";
                        }
                    }
                    int num = in1.read();
                    message += Character.toString((char)num);
                }
                catch (Exception classNot) {

                }
            } while ((message.equals("bye !")));
            try {
                sendMessage("bye");
            }catch (Exception e) {
                e.printStackTrace();
            } finally {
                socket.close();
            }

        } catch (UnknownHostException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }

        return null;
    }

    @Override
    protected void onPostExecute(String result) {
        try {
            if (socket.isClosed()) {
                flag = false;
            }
        } catch (Exception e) {
            Toast.makeText(getActivity().getApplicationContext(), "Disconnect!", Toast.LENGTH_LONG).show();
        }
        super.onPostExecute(result);
    }

    @Override
    public void listener(String text) {
        sendMessage(text);
    }

    void sendMessage(String msg) {
        try {
            out1.print(msg);
            out1.flush();
            if (!msg.equals("bye"))
                blank.handler.obtainMessage(0, 0, -1, "Me: " + msg)
                        .sendToTarget();
            else
                blank.handler.obtainMessage(0, 0, -1,
                        "Disconnected !").sendToTarget();
        } catch (Exception ioException) {
            ioException.printStackTrace();
        }
    }

}

public void send(View v) {
    addListener(myClientTask);
    if (listener != null)
    {
        listener.listener(((EditText)getView().findViewById(R.id.editText1))
        .getText().toString());
    }
}


// TODO: Rename method, update argument and hook method into UI event
public void onButtonPressed(Uri uri) {
    if (mListener != null) {
        mListener.onFragmentInteraction(uri);
    }
}

@Override
public void onAttach(Context context) {
    super.onAttach(context);
    if (context instanceof OnFragmentInteractionListener) {
        mListener = (OnFragmentInteractionListener) context;
    } else {
        throw new RuntimeException(context.toString()
                + " must implement OnFragmentInteractionListener");
    }
}

@Override
public void onDetach() {
    super.onDetach();
    mListener = null;
}

public interface OnFragmentInteractionListener {
    // TODO: Update argument type and name
    void onFragmentInteraction(Uri uri);
}

@Override
public void onDestroy() {
    // TODO Auto-generated method stub
    try {
        if (listener != null)
            listener.listener("bye");
        socket.close();
    } catch (Exception e) {
        // TODO: handle exception
    }
    super.onDestroy();
}

@Override
public void onStop() {
    // TODO Auto-generated method stub
    try {
        if (listener != null)
            listener.listener("bye");
        socket.close();
    } catch (Exception e) {
        // TODO: handle exception
    }
    super.onStop();
}

    public void onClick(View v) {
        Intent intent = new Intent(getActivity().getApplicationContext(), blank.class);
        startActivity(intent);
        getActivity().finish();
    }

}

代码在活动中运行良好，但在片段中运行良好。仅供参考，一旦套接字建立片段，文本视图将被更新并显示欢迎文本。我是否应该知道在哪里放置代码而不是onCreateView方法？