Question

I have a TitleWindow component that I’m displaying via PopUpManager.addPopUp(). When I close the component, I’m calling the closePopUp Event which sets the object’s variable to null, as follows:

// application
private var myObject:MyObject;

private function openPopUp():void
{
    myObject = new MyObject();
    myObject.addEventListener('closePopUp', closePopUp);
    PopUpManager.addPopUp(myObject, this, true);
}

private function closePopUp(e:Event):void
{
    myObject = null;
}

However in debug mode I can see myObject being set to null, but the memory usage doesn’t decrease. When I open the component again, the memory usage remains the same as before.

I would have thought when the myObject variable is set to null, GC recycles the object and frees up memory. Any idea why this is not happening?

Answer 1

Try removing the event listener, I think having it hanging on there will prevent the GC from collecting your object.