Duda con servicio

[rafaxplayer]

Hola compañeros tengo dudas con el tema de los servicios , resulta que he creado uno el cual usa una tarea asincronica cada intervalo de tiempo ,esta tarea retorna un numero el cual
debo imprimir en un textview de la mainactivity , cual es el mejor procedimiento para este trabajo?

codigo de mi servicio:

public class StartService extends Service {
int i=0;
static private int DELAY = 500;
private Timer timer;

private String USERNAME;
SharedPreferences Settings;



@Override
public void onCreate() {
// TODO Auto-generated method stub
super.onCreate();
Settings = PreferenceManager.getDefaultSharedPreferences(getA pplicationContext());
this.USERNAME = Settings.getString("username", "");
Log.i(getClass().getSimpleName(), "Servicio Creado");
iniciarServicio();
}

@Override
public void onStart(Intent intent, int startId) {
// TODO Auto-generated method stub
super.onStart(intent, startId);



}

@Override
public void onDestroy() {
// TODO Auto-generated method stub
super.onDestroy();
this.finalizarServicio();
Log.i(getClass().getSimpleName(), "Servicio Finalizado");

}

@Override
public IBinder onBind(Intent intent) {
// TODO Auto-generated method stub
return null;
}

public void iniciarServicio(){
try{

// Creamos el timer
this.timer = new Timer();
Log.i(getClass().getSimpleName(), "Iniciando servicio...");
// Configuramos lo que tiene que hacer
this.timer.scheduleAtFixedRate ( new TimerTask() {

public void run() {
GetNewPostCount npost = new GetNewPostCount();
npost.execute ("http://www.amsspecialist.com/unread_count.php?id=" + Settings.getString("username", ""));
Log.i(getClass().getSimpleName(), "Temporizando : "+ i++);

}
}, 0, DELAY);
Log.i(getClass().getSimpleName(), "Temporizador iniciado");
}
catch(Exception ex)
{
Log.e(getClass().getSimpleName(), ex.getMessage());
}

}

public void finalizarServicio(){

try{
if(this.timer != null){
timer.cancel();
Log.i(getClass().getSimpleName(), "Temporizador detenido");
}

}catch(Exception e){
Log.e(getClass().getSimpleName(), e.getMessage());
}

}

public class GetNewPostCount extends AsyncTask<String, Integer, Integer> {

protected void onPreExecute(){


}

@Override
protected Integer doInBackground(String... params) {
HttpURLConnection urlConnection = null;
int nPost=0;
try {
URL url = new URL(params[0]);
urlConnection = (HttpURLConnection)url.openConnection();
InputStream in = new BufferedInputStream(urlConnection.getInputStream() );
nPost = Integer.parseInt(readStream(in));

}
catch(Exception ex)
{
Log.e("Post","Error en la petición de datos",ex);
}
finally
{
urlConnection.disconnect();
}
return nPost;

}

protected void onProgressUpdate(Integer... params){
//Update a progress bar here, or ignore it, it's up to you
}

protected void onPostExecute(Integer np){

// este deberia ser el textview a actualizar
//TextView tx=(TextView)actividad.findViewById(R.id.npost);
Settings = PreferenceManager.getDefaultSharedPreferences(getB aseContext());
int oldPost = Settings.getInt("newpost",0);

if( oldPost < np && np > 0)
{
NotifyShow(1,R.drawable.ic_launcher,"Nuevos post",USERNAME + " Hay " + String.valueOf(np - oldPost) + " mensajes nuevos desde tu última visita",Settings.getBoolean("notifisound", false),Settings.getBoolean("notifivibrate", false));
oldPost=np;
}
Editor edit = Settings.edit();
edit.putInt("newpost", np);
edit.commit();
//tx.setText(String.valueOf(np));
this.cancel(true);
}

public String readStream(InputStream in) throws Exception{
String nPost="0";
BufferedReader r = new BufferedReader(new InputStreamReader(in),1000);
nPost = r.readLine();
in.close();

return nPost;
}

}
//End Class
public void NotifyShow(int id,int icon,String title,String msg,boolean sound,boolean bVibrate){
Intent resultIntent = new Intent(getBaseContext(), MainActivity.class);
Uri UriSound = RingtoneManager.getDefaultUri(RingtoneManager.TYPE _NOTIFICATION);
long[] vibrate=new long[] {100, 250, 100, 500};

if(!sound){
UriSound=null;
}
if(!bVibrate){
vibrate=null;
}

NotificationCompat.Builder mBuilder =new NotificationCompat.Builder(getApplicationContext() )
.setSmallIcon(icon)
.setContentTitle(title)
.setContentText(msg)
.setVibrate(vibrate)
.setAutoCancel(true)
.setSound(UriSound);

PendingIntent resultPendingIntent =PendingIntent.getActivity(getApplicationContext() ,0,resultIntent ,PendingIntent.FLAG_UPDATE_CURRENT);
mBuilder.setContentIntent(resultPendingIntent);
NotificationManager mNotifyMgr = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);

if(Settings.getBoolean("notifishow", true)){
mNotifyMgr.notify(id, mBuilder.build());
}else{
mNotifyMgr.cancelAll();}
}


public boolean networkavailable(){
boolean connection = false;
ConnectivityManager conn = (ConnectivityManager)this.getSystemService(Context .CONNECTIVITY_SERVICE);
NetworkInfo netinfo=conn.getActiveNetworkInfo();
//final android.net.NetworkInfo wifi= conn.getNetworkInfo(ConnectivityManager.TYPE_WIFI) ;
//final android.net.NetworkInfo gmovile= conn.getNetworkInfo(ConnectivityManager.TYPE_MOBIL E);
if(netinfo!= null && netinfo.isConnectedOrConnecting()){

connection=true;
}else{connection = false;}
return connection;
}
}

[Carlosdelachica]

No se si tu código funciona ya que no lo he mirado a fondo, pero usando una tarea asíncrona dentro del hilo parece lo mas sensato ;)