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before writing this I looked at other post but have not found any solution, I would appreciate your help.

In the onCreate method of the class of the application launcher creates a thread TCPServer and display a table with information. The problem is that this information varies and must be updated when the thread detects TCPServer have sent a new message control.

Then I show the code if I expressed myself well.

//launcher class
public class profesor extends Activity implements OnClickListener {

    static TableLayout alumnsTable; 

    @Override
    public void onCreate(Bundle savedInstanceState) {               
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        .
        .
        .

        Thread serverThread = new Thread(null, new TCPServer(), "BackgroundService");
        serverThread.start();
        .
        .
        .       

        //information is added to the table        
        alumnsTable = (TableLayout)findViewById(R.id.alumnsTable);
        List<Alumnos> listaAlumnos = Alumnos.ReadList();
        for(Alumnos al:listaAlumnos){
            alumnsTable.addView(filaAlumno(al));
        }  
    }

    //Eliminates the above information and reloads the table with the new information
    public void actualiza(){
        alumnsTable.removeAllViews();
        setContentView(R.layout.main);
        alumnsTable = (TableLayout)findViewById(R.id.alumnsTable);                          
         List<Alumnos> listaAlumnos = Alumnos.ReadList();                                                                                                   
        for(Alumnos al:listaAlumnos){
            alumnsTable.addView(filaAlumno(al));
        }
    }
}


//TCPServer class
public class TCPServer implements Runnable {
    private static Handler handler = new Handler();


    public void run() {

    ServerSocket serverSocket;

    String file;
    int filesizeMb = 4;
    int filesize = filesizeMb * (1024 * 1024); // filesize temporary hardcoded


    int bytesRead;
    int current = 0;
    try {
        serverSocket = new ServerSocket(profesor.COMUNICATION_PORT);
        Log.d(profesor.LOG_TAG,"S: Servidor Iniciado.");

        while (true) {
            final Socket sock = serverSocket.accept();
            String ClientAddr=sock.getInetAddress().toString();
            ClientAddr = ClientAddr.substring(ClientAddr.indexOf('/') + 1, ClientAddr.length());
            final String contacto=DeviceList.getDeviceName(ClientAddr);
            Log.d(profesor.LOG_TAG,"S: Conectado con: " + ClientAddr);

            // Conection type
            DataInputStream dis = new DataInputStream(sock.getInputStream());
            final String connectionType =dis.readUTF();
            Log.d(profesor.LOG_TAG,"S: Tipo de Conexion " + connectionType);

            .
            .
            .
            .

            // RECEIVING CONTROL MESSAGE
            if (connectionType.contains("CONTROL")) {
                String ControlText =dis.readUTF();
                String[] Control = ControlText.split(":");
                Log.d(profesor.LOG_TAG,"S: Recibido nuevo progreso de prueba. IP: "+Alumnos.getIdAlumno(ClientAddr)+"->"+Integer.parseInt(Control[0])+" ->"+Integer.parseInt(Control[1]));

                Alumnos.setProgress(Alumnos.getIdAlumno(ClientAddr), Integer.parseInt(Control[0]), Integer.parseInt(Control[1]));


                /****************************************************/
                //Here is where I need to call the update method of the
                //class teacher to delete the old data and fill the table
                //again.
                /****************************************************/
            }   
            dis.close();
            sock.close();
        }

        } catch (IOException e) {
            Log.d(profesor.LOG_TAG, "IOException"+e);
            e.printStackTrace();
        }
    }
}

Can anyone give me some idea?, I have seen examples handlers but not in a class declaration and the call in another.

I hope that you understand what I mean, my English is not very good.

Thanks for the help

4

2 回答 2

1

您可以尝试使用 Handler 或 Activity 引用创建 TCPServer，然后在要更新 UI 时使用它：

refHandler.post(new Runnable(){
    public void run() {
        //Update
    }
});

refActivity.runOnUiThread(new Runnable() {
    public void run() {
       //Update
    }
});
于 2012-06-22T15:33:10.237 回答
0

用于runOnUiThread从 Thread 更新 ui：

// RECEIVING CONTROL MESSAGE
            if (connectionType.contains("CONTROL")) {
                String ControlText =dis.readUTF();
                String[] Control = ControlText.split(":");
                Log.d(profesor.LOG_TAG,"S: Recibido nuevo progreso de prueba. IP: "+Alumnos.getIdAlumno(ClientAddr)+"->"+Integer.parseInt(Control[0])+" ->"+Integer.parseInt(Control[1]));

                Alumnos.setProgress(Alumnos.getIdAlumno(ClientAddr), Integer.parseInt(Control[0]), Integer.parseInt(Control[1]));


                /****************************************************/
                //Here is where I need to call the update method of the
                //class teacher to delete the old data and fill the table
                //again.
                /****************************************************/
    profesor.this.runOnUiThread(new Runnable() {
        @Override
        public void run() {
            // refresh ui here
        }
    });
        }
于 2012-06-22T15:33:48.690 回答