ScheduledExecution and nUITimerObject

1

Hi everyone,
In our application we need to implement polling and from the samples we were provided the closest one is the UMGDemo. Based on it we have the following code:

public boolean nUIEventCallback(nUIObject object, int evt_type) {
        switch (object.nuiid) {
     
            case NUIID_ENVIRONMENTS_STATE_TIMER: {
                if (evt_type == EVT_TIMER_COMPLETE) {
                    System.out.println("Tick!");
                    object.tick();
			createComponent();
                    //addTimerObject();
                }
                break;
            }
        }
        
        return true;
}

private void addTimerObject () {
        nUITimerObject timer = new nUITimerObject (NUIID_ENVIRONMENTS_STATE_TIMER, 1000);
        timer.addEventListener(this, true);
        view.add(timer);
}

 public nUIViewDisplay createComponent() {
        view = new nUIViewDisplay(-1);
        addTimerObject();
        
        return view;
}

My questions are:

  • what is the purpose of the tick method? And is it important to call it everytime?
  • Should we recreate the whole view on every TIMER event or it’s OK just to add the nUITimerObject? I guess that the second approach is not prefferable because no one removes the old timers.
  • is there an object that fires event on a fixed amount of time (something like TimerTask?)
  • if we implement this functionality just starting a new thread and using a flag, is it enough for this flag to be volatile (how will this be cross-compiled?) and we should implement monitor pattern or something like that (again how will this be cross-compiled?) ?

Thanks,
Nenko