Have service running when app is closed from recent apps

Question

I want to keep running one service which reads incoming messages even after app is closed [clicking on recent apps button and then close it]. I have tried using START_STICKY, isolated process but nothing is working. Is it possible in latest android versions ?

Answer 1

Try startForeground(notitficationId, notificationObject); command in onStartCommand()

Answer 2

private void startForground(){
    Intent notificationIntent = new Intent(this,MainActivity.class);
    PendingIntent pendingIntent=PendingIntent.getActivity(this, 0,
            notificationIntent, Intent.FLAG_ACTIVITY_NEW_TASK);

    Notification notification=new NotificationCompat.Builder(this)
                                .setSmallIcon(R.drawable.ic_launcher)
                                .setContentText("App Name")
                                .setContentIntent(pendingIntent)
                                .build();

    startForeground(NOTIFICATION_ID, notification);
}

If you don't want to show notification or icon but still want to run in background try this answer

Answer 3

Making a sticky service, will ensure you restarting after app is closed, but you need to call your methods in onStartComand().

@Override
public int onStartCommand(Intent intent, int flags, int startId) {
    // do your job here
    // start reading your incoming messages
    readMessages();
    return START_STICKY;
}

Answer 4

try

public int onStartCommand(Intent intent, int flags, int startId)
{
..........

return super.onStartCommand(intent, flags, startId);
}

but when you close the application onStartCommand restart from the beginning whether it has finished it's job or not!