android - How can stop calling of activity on second time by a service class? -

i create service start activity on button click.in first time activity start when closed activity or leave open activity start service automatically.pleas me ,i want start activity click on button not second time automatically service class use following code-

service class

public class myservise extends service {        @override        public ibinder onbind(intent arg0) {           return null;        }         @override        public int onstartcommand(intent intent, int flags, int startid) {           // let continue running until stopped.           toast.maketext(this, "service started", toast.length_long).show();           return start_sticky;        }        @override     public void oncreate() {         super.oncreate();         intent dialogintent = new intent(this, demo.class);         dialogintent.addflags(intent.flag_activity_new_task);         startactivity(dialogintent);     }        @override        public void ondestroy() {           super.ondestroy();           toast.maketext(this, "service destroyed", toast.length_long).show();        }         } 

main activity

public class mainactivity extends activity  {      @override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.activity_main);                 }      @override     public boolean oncreateoptionsmenu(menu menu) {         // inflate menu; adds items action bar if present.         getmenuinflater().inflate(r.menu.main, menu);         return true;     }        // method start service        public void startservice(view view) {           startservice(new intent(getbasecontext(), myservise.class));        } } 

second activity

public class demo extends activity {     @override     protected void oncreate(bundle savedinstancestate) {         // todo auto-generated method stub         super.oncreate(savedinstancestate);         setcontentview(r.layout.demo);     }  } 

pleas me .

first should return

return start_not_sticky;  

in onstartcommand(..) in service.

and try stop service on ondestroy();

also refer this post