Intent i = new Intent(this, LocalisationService.class);
startService(i);

public class LocalisationService extends Service {

private LocationManager locationManager;
private LocationListener locationListener;

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

@Override
public int onStartCommand(Intent intent, int flags, int startId) {
    Notification notification = new Notification(R.drawable.iconsmall,
            "Notification text", System.currentTimeMillis());
    notification.flags |= Notification.FLAG_ONGOING_EVENT;
    Intent i = new Intent(this, RouteActivity.class);

    i.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP
            | Intent.FLAG_ACTIVITY_SINGLE_TOP);

    PendingIntent pi = PendingIntent.getActivity(this, 0, i, 0);

    notification.setLatestEventInfo(this, "Notification title",
            "notification message)", pi);
    startForeground(1337, notification);
    startListenLocation();
    return (START_NOT_STICKY);
}

@Override
public void onDestroy() {
    stopListenLocation();
    stopForeground(true);
}

public void startListenLocation() {
    locationManager = (LocationManager) getApplicationContext()
            .getSystemService(Context.LOCATION_SERVICE);
    locationListener = new LocationListener() {
        public void onLocationChanged(Location location) {
            CurrentRouteManager.getSharedManager().updateWithLocation(
                    location);
        }

        public void onStatusChanged(String provider, int status,
                Bundle extras) {

        }

        public void onProviderEnabled(String provider) {

        }

        public void onProviderDisabled(String provider) {

        }

    };
    locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0,
            200, locationListener);
    locationManager.requestLocationUpdates(
            LocationManager.NETWORK_PROVIDER, 0, 200, locationListener);
}

public void stopListenLocation() {
        locationManager.removeUpdates(locationListener);
}

<activity
        android:name="com.wayzup.activity.RouteActivity"
        android:screenOrientation="portrait"
        android:launchMode="singleTop" >
    </activity>

<service android:name="com.wayzup.services.LocalisationService" >
        </service>