From an Android application I create and execute a service that runs on a thread and runs in the background, but when the main application is completely closed, the service also dies.
The thread I think I declare as Daemon but still "kill" the service.
My idea is to leave the service running even if we close the main application, a wasap style that when you close the main program the messages keep coming to you.
Any ideas?
If you want to use a service and this continues executing the process even destroying the application , you must define:
Service.START_STICKY : Recreate the service if the application is destroy.
You can see as an example this service that plays an audio file:
import android.app.Service;
import android.content.Intent;
import android.media.MediaPlayer;
import android.os.IBinder;
import android.util.Log;
import android.widget.Toast;
/* Add declaration of this service into the AndroidManifest.xml inside application tag*/
public class BackgroundSoundService extends Service {
private static final String TAG = "BackgroundSoundService";
MediaPlayer player;
public IBinder onBind(Intent arg0) {
Log.i(TAG, "onBind()" );
return null;
}
@Override
public void onCreate() {
super.onCreate();
player = MediaPlayer.create(this, R.raw.jorgesys_song);
player.setLooping(true);
player.setVolume(100,100);
Toast.makeText(this, "Service started...", Toast.LENGTH_SHORT).show();
Log.i(TAG, "onCreate() , service started...");
}
public int onStartCommand(Intent intent, int flags, int startId) {
player.start();
return Service.START_STICKY;
}
public IBinder onUnBind(Intent arg0) {
Log.i(TAG, "onUnBind()");
return null;
}
public void onStop() {
Log.i(TAG, "onStop()");
}
public void onPause() {
Log.i(TAG, "onPause()");
}
@Override
public void onDestroy() {
player.stop();
player.release();
Toast.makeText(this, "Service stopped...", Toast.LENGTH_SHORT).show();
Log.i(TAG, "onCreate() , service stopped...");
}
@Override
public void onLowMemory() {
Log.i(TAG, "onLowMemory()");
}
}
You can also use a BroadcastReceiver
DO NOT use threads
because they die when the app is closed.
I recommend you use an extended class to Service
public class ClaseParaEjecutarEnSegundoPlano extends Service {
@Override
public void onCreate() {
super.onCreate();
Log.i( "msg", "Servicio creado");
}
@Override
public int onStartCommand(Intent intencion, int flags, int idArranque) {
Log.i( "msg", "Servicio reiniciado");
//----- Aquí tu codigo--------
return START_NOT_STICKY;
}
@Override
public void onDestroy() {
super.onDestroy();
}
public IBinder onBind(Intent intent) {
return null;
}
}
You start the service from the Activity
with:
startService(new Intent(this, ClaseParaEjecutarEnSegundoPlano.class));
and to stop it:
stoptService(new Intent(this, ClaseParaEjecutarEnSegundoPlano.class));