Android: Sticky Service not restarting -

my app uses service background tasks. want service keep running when user kills app(swipes away). there 2 scenario's in user kan kill app:

scenario 1: when in app:     1 user presses **backbutton**, apps goes background , user on homescreen.     2 user presses multitasking button , swips app away.     3 service should restart because sticky.  scenario 2: when in app:     1 user presses **homebutton**, apps goes background , user on homescreen.     2 user presses multitasking button , swips app away.     3 service should restart because sticky. 

scenario 1 works expected. service restarts after app swiped away in matter of seconds.

scenario 2 not work expected. service restarted after more 5 minutes.

i don't understand why takes long restart service in scenario 2. there known solution this?

public class mainactivity extends activity {      @override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.activity_main);         intent test = new intent(this, testservice.class);         startservice(test);     } }  public class testservice extends service {      @override     public int onstartcommand(intent intent, int flags, int startid) {         log.e("service", "service restarted!");//in scenario 2, takes more 5 minutes print this.          return service.start_sticky;     }      @override     public ibinder onbind(intent intent) {         return null;     } } 

when press button, destroying activity means ondestroy() called stop() sticky_service. hence sticky_service boots again immediately.

when press home button, pausing activity (onpause()), putting in background. activity destroyed when os decides gc it. @ point of time ondestroy() called @ stop() service , sticky_service boots again.

hope helps.