andoid app rchat

package com.wbapps.lenin.lenin;

import android.content.Context;
import android.content.res.Resources;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.os.AsyncTask;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.inputmethod.InputMethodManager;
import android.widget.EditText;
import android.widget.ScrollView;
import android.widget.TableLayout;
import android.widget.TableRow;
import android.widget.TextView;
import android.widget.Toast;

import java.net.Socket;
import java.io.*;


public class MainActivity extends  ActionBarActivity {
    //StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
    private TableLayout table;

    Resources rs                = null;
    Socket sc                   = null;
    DataOutputStream os         = null;
    boolean socket_conectado    = false;
    boolean layout_usuarios     = false;
    boolean layout_chat         = false;
    String user                 = "";
    String pass                 = "";
    SQLiteDatabase db           = null;
    DataInputStream is          = null;
    String last_socket_query    = "";
    String chat_msg             = "";
    String player_list          = "";
    String label_nickname       = "";

    private class ListenSocketTask extends AsyncTask<Void, Void, Void> {
        String line;
        protected Void doInBackground(Void... param) {
            try {
                line = is.readLine();
            } catch (IOException e) {

            }
            return null;
        }
        protected void onPostExecute(Void param) {
            new ListenSocketTask().execute((Void[]) null);
            //Toast toast = Toast.makeText(getApplicationContext(), line, Toast.LENGTH_LONG);
            //toast.show();
            OnSocketMessage(line);
        }
    }
    private class SocketSendQueryThread extends AsyncTask<Void, Void, Void> {
        protected Void doInBackground(Void... param) {
            try {
                os.writeBytes(last_socket_query);
                os.flush();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return null;
        }
        protected void onPostExecute(Void param) {
        }
    }
    private class SocketConnect extends AsyncTask<Void, Void, Void> {
        protected Void doInBackground(Void... param) {
            try {
                sc = new Socket("redzoneserver.com", 2033);
                os = new DataOutputStream(sc.getOutputStream());
                is = new DataInputStream(sc.getInputStream());
                socket_conectado = true;
                new ListenSocketTask().execute((Void[]) null);
            } catch (Exception e) {

            }
            return null;
        }
        protected void onPostExecute(Void param) {
            if(!socket_conectado) {
                setContentView(R.layout.internet_error);
                return;
            }
            UsuariosSQLiteHelper app_db = new UsuariosSQLiteHelper(com.wbapps.lenin.lenin.MainActivity.this, "database");
            db = app_db.getWritableDatabase();
            Cursor result = db.rawQuery("SELECT USER,PASS FROM credenciales", null);
            if(result.moveToFirst()) {
                user = result.getString(0);
                pass = result.getString(1);
                setContentView(R.layout.spiner);
                SocketSendQuery("login\1" + user + "\1" + pass);
            }
            else {
                setContentView(R.layout.login);
            }
        }
    }
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        //StrictMode.setThreadPolicy(policy);
        super.onCreate(savedInstanceState);
        new SocketConnect().execute((Void[]) null);
    }
    public void clickbtnReconectar(View v) {
        setContentView(R.layout.spiner);
        new SocketConnect().execute((Void[]) null);
    }
    public void clickbtnPlayers(View v) {
        setContentView(R.layout.players);
        layout_usuarios = true;
        layout_chat     = false;
        SocketSendQuery("players\1");
        UpdatePlayerList();
    }
    public void clickbtnChat(View v) {
        setContentView(R.layout.chat);
        layout_usuarios = false;
        layout_chat     = true;
        TextView obj = (TextView) findViewById(R.id.lbSocket);
        obj.setText(chat_msg);
    }
    public void clickbtnSetLogin(View v) {
        EditText obj = (EditText) findViewById(R.id.txtNick);
        user = obj.getText().toString();
        obj.setText("");
        obj = (EditText) findViewById(R.id.txtPass);
        pass = obj.getText().toString();
        obj.setText("");
        if(user.length() < 1 || pass.length() < 1) {
            Toast.makeText(getBaseContext(), "Rellene todo los campos!", Toast.LENGTH_SHORT).show();
            return;
        }
        db.execSQL("DELETE FROM credenciales");
        db.execSQL("INSERT INTO credenciales (USER,PASS) VALUES ('" + user + "','" + pass + "')");
        InputMethodManager imm = (InputMethodManager) getSystemService(INPUT_METHOD_SERVICE);
        imm.hideSoftInputFromWindow(getCurrentFocus().getWindowToken(), 0);
        setContentView(R.layout.spiner);
        SocketSendQuery("login\1" + user + "\1" + pass);
    }
    public void SocketSendQuery(String socket_query) {
        last_socket_query = socket_query;
        try {
            os.writeBytes(last_socket_query);
        } catch (IOException e) {
            e.printStackTrace();
        }
        //new SocketSendQueryThread().execute((Void[]) null);
    }
    public void OnSocketMessage(String data) {
        String[] query = data.split("\1");
        switch(query[0]) {
            //login:
            case "login": {
                int pLevel = Integer.parseInt(query[1]);
                if (pLevel > 0) {
                    setContentView(R.layout.chat);
                    layout_chat = true;
                }
                else {
                    setContentView(R.layout.login);
                    EditText obj = (EditText) findViewById(R.id.txtNick);
                    obj.setText(user);
                    TextView obj1 = (TextView) findViewById(R.id.lbLoginError);
                    obj1.setText("Credenciales incorrectas!!");
                }
                break;
            }
            case "msg": {
                chat_msg += query[1] + ": " + query[2] + "\n";
                SetChatString(chat_msg);
                break;
            }
            case "text": {
                chat_msg += query[1] + " (ID:"+query[2]+"): "+query[3]+"\n";
                SetChatString(chat_msg);
                break;
            }
            case "rcon": {
                chat_msg += query[1]+"\n";
                SetChatString(chat_msg);
                break;
            }
            case "rconEx": {
                chat_msg += query[1]+"\n";
                SetChatString(chat_msg);
                break;
            }
            case "players": {
                player_list = data;
                if(layout_usuarios) {
                    UpdatePlayerList();
                }
            }
        }
    }
    public void SetChatString(String string) {
        if(layout_chat) {
            TextView obj = (TextView) findViewById(R.id.lbSocket);
            obj.setText(string);
            ScrollView obj2 = (ScrollView) findViewById(R.id.scrollView);
            obj2.fullScroll(View.FOCUS_DOWN);
        }
    }
    public void clickbtnEnviarDato(View v) {
        SocketSendChat();
    }
    public void SocketSendChat() {
        EditText text = (EditText)findViewById(R.id.txtSocket);
        String dato = text.getText().toString();
        if(dato.length() > 0) {
            text.setText("");
            SocketSendQuery("msg\1" + dato);
        }
    }
    public void UpdatePlayerList() {
        setContentView(R.layout.players);
        String[] split = player_list.split("\1");
        int t = 0;
        int total = split.length-1;

        TableRow fila;
        TextView columna;
        //STYLE-------------------------------------------------------------------------------------
        table = (TableLayout)findViewById(R.id.table);
        TableRow.LayoutParams layoutFila  = new TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT, TableRow.LayoutParams.WRAP_CONTENT);
        TableRow.LayoutParams layoutId    = new TableRow.LayoutParams(70,TableRow.LayoutParams.WRAP_CONTENT);
        TableRow.LayoutParams layoutNombre= new TableRow.LayoutParams(150,TableRow.LayoutParams.WRAP_CONTENT);
        //------------------------------------------------------------------------------------------

        fila = new TableRow(this);
        fila.setLayoutParams(layoutFila);
        //-------------------------------------
        columna = new TextView(this);
        columna.setText("ID");
        columna.setLayoutParams(layoutId);
        columna.setTextAppearance(this, R.style.etiqueta);          //Style
        columna.setBackgroundResource(R.drawable.tabla_cabecera);   //Style
        fila.addView(columna);
        //-------------------------------------
        columna = new TextView(this);
        columna.setText("NOMBRE");
        columna.setLayoutParams(layoutNombre);
        columna.setTextAppearance(this, R.style.etiqueta);          //Style
        columna.setBackgroundResource(R.drawable.tabla_cabecera);   //Style
        fila.addView(columna);
        //-------------------------------------
        columna = new TextView(this);
        columna.setText("PAIS");
        //columna.setGravity(Gravity.CENTER_HORIZONTAL);
        columna.setTextAppearance(this,R.style.etiqueta);           //Style
        columna.setBackgroundResource(R.drawable.tabla_cabecera);   //Style
        fila.addView(columna);
        //-------------------------------------
        table.addView(fila);

        for( int i=1; i < total; i++) {
            fila = new TableRow(this);
            //-------------------------------------
            columna = new TextView(this);
            columna.setText(split[i]);
            columna.setBackgroundResource(R.drawable.tabla_cuerpo);//Style
            fila.addView(columna);
            //-------------------------------------
            columna = new TextView(this);
            columna.setText(split[i + 2]);
            columna.setBackgroundResource(R.drawable.tabla_cuerpo);//Style
            fila.addView(columna);
            //-------------------------------------
            columna = new TextView(this);
            columna.setText(split[i+4]);
            columna.setBackgroundResource(R.drawable.tabla_cuerpo);//Style
            fila.addView(columna);
            //-------------------------------------
            table.addView(fila);
            i+=5;
            t++;
        }
        TextView text = (TextView)findViewById(R.id.lbChatPlayers);
        text.setText("JUGADORES ("+t+")");
    }
    public class UsuariosSQLiteHelper extends SQLiteOpenHelper {
        public UsuariosSQLiteHelper(Context contexto, String nombre) {
            super(contexto, nombre, null, 1);
        }
        @Override
        public void onCreate(SQLiteDatabase db) {
            db.execSQL("CREATE TABLE IF NOT EXISTS credenciales (USER TEXT,PASS TEXT)");
            //Toast.makeText(getBaseContext(), "NEW DATABASE :)", Toast.LENGTH_LONG).show();
        }
        @Override
        public void onUpgrade(SQLiteDatabase db, int versionAnterior, int versionNueva) {
            db.execSQL("DROP TABLE IF EXISTS credenciales");
            db.execSQL("CREATE TABLE IF NOT EXIST credenciales (USER TEXT,PASS TEXT)");
        }
    }

    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.menuConfig) {
            return true;
        }
        if (id == R.id.menuLogout) {
            setContentView(R.layout.login);
            db.execSQL("DELETE FROM credenciales");
            return true;
        }
        return super.onOptionsItemSelected(item);
    }
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        if (keyCode == KeyEvent.KEYCODE_BACK) {
            System.exit(0);
        }
        return true;
    }
}