android - ProgressDialog freezes when trying to run a service with an asynctask -

i have code inside asynctask:

@override protected void onpreexecute() {     waitdialog = new progressdialog(context);                waitdialog.settitle(r.string.wait_title);                waitdialog.setmessage(context.getstring(r.string.wait_body));     waitdialog.setindeterminate(true);     waitdialog.show(); }  @override protected boolean doinbackground(void... unused) {     intent serviceintent = new intent(context, publisherservice.class);     savesettings(false);     startservice(serviceintent);     return serviceisrunning(); } 

the dialog shows while service starting (and takes few seconds) progressdialog frozen. if use simple systemclock.sleep() inside doinbackground() call works fine.

can tell me why happening , how solve issue?

thanks

you should not start services threads or asynctasks. service start own thread , perform work there. or it's possible bind service in onpreexecute() , call methods doinbackground. read local service sample here http://developer.android.com/reference/android/app/service.html