postDelayed() in a Service

Question

I'm trying to restart service from itself in a few time. My code looks like this (inside the onStartCommand(...))

Looper.prepare();
Handler handler = new Handler();
handler.postDelayed(new Runnable() {
            @Override
            public void run() {
                Intent intent = new Intent(BackgroundService.this, BackgroundService.class);
                startService(intent);
            }
        }, 3 * 60000);

Service is running in the foreground while this code executes, but it doesn't seem to call onStartCommand(...) . Is there any other way to restart service from itself in a few time?

UPD: I've found out that it actually restarts service, but not in a given time (may take up to 30 minutes instead of given 3). So now the question is how to make it restart consequently

Answer 1

I would declare the Handler variable at the Service level, not locally in the onStartCommand, like:

public class NLService extends NotificationListenerService {
    Handler handler = new Handler(); 

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        handler.postDelayed(new Runnable() {....} , 60000);
    }

And the service has its own loop, so you do not need Looper.prepare();

Answer 2

Replace

Handler handler = new Handler();

With

Handler handler = new Handler(Looper.getMainLooper());

Worked for me.