android - Service restart on starting activity -

i'm trying services working in android. application can start service now, when service running in background , start (main)activity, service restart (the oncreate() , onstartcommand() commands called). in mainactivity check if service running via following code:

    if (isservicerunning()){         system.out.println("de serice running");     }     else{         system.out.println("de service niet running");         startservice(new intent(this, yourservice.class));     } ... private boolean isservicerunning() {     activitymanager manager = (activitymanager)getsystemservice(activity_service);     (activitymanager.runningserviceinfo service : manager.getrunningservices(integer.max_value)) {         log.d("services", service.service.getclassname());         if ("com.vandervoorden.mijncijfers.yourservice".equals(service.service.getclassname())) {             return true;         }     }     return false; } 

when service running "de serice running" shown in console.

why oncreate() , onstartcommand() called while didn't restart service myself? how can make sure service isn't start twice when started?

edit 1 2013-10-07 8:54 pm:

my service class:

public class yourservice extends service {     alarm alarm = new alarm();      public void oncreate()     {         super.oncreate();         system.out.println("service: oncreate");     }       public int onstartcommand(intent intent, int flags, int startid) {         //alarm.setalarm(this);         system.out.println("service: onstartcommand");         return start_sticky;     }      @override     public ibinder onbind(intent intent)     {         return null;     } } 

this behavior looks weird if sure not destroying service somewhere in activity, make sure 1 instance of service running, flagging service using static flag keeps track of "oncreate" , "ondestroy", way independently if activity start service have validations in service itself.

hope helps.

regards!