External SWF garbage collection issue

1

I apologize if this is somewhere else in the forums.

I’ve written a very simple swf loader/unloader that does not seem to remove from memory the loaded swf after it is no longer on the stage. There are several blog entries I’ve found regarding this, and none of their solutions have seemed to work. Adobe’s Livedocs example of loading in an external swf and removing still has this issue as well. Perhaps I’m missing a simple step?

Here’s what I’ve got. Feel free to dump this code into your Flash app. All you need to do is make the 2 buttons (LOAD & UNLOAD) and the .SWF you want to load in as a test.


var url;
var urlRequest;
var contentLoader;

runOnce();

function runOnce():void{
	load_btn.addEventListener(MouseEvent.CLICK, loadTheMovie);
}

function loadTheMovie(event:MouseEvent):void{
	load_btn.removeEventListener(MouseEvent.CLICK, loadTheMovie);
	
	contentLoader = new Loader();
	url = "media/attract.swf";
	urlRequest = new URLRequest(url);
	
	contentLoader.load(urlRequest);

	content_mc.addChild(contentLoader);
	contentLoader.contentLoaderInfo.addEventListener(Event.COMPLETE, loadMovieComplete);
}

function loadMovieComplete(e:Event):void{
	trace("swf loaded");
	contentLoader.contentLoaderInfo.removeEventListener(Event.COMPLETE, loadMovieComplete);
	unload_btn.addEventListener(MouseEvent.CLICK, destroyClass);
}

function destroyClass(event:MouseEvent):void{
	trace("unload swf");
		
	unload_btn.removeEventListener(MouseEvent.CLICK, destroyClass);
	
	//contentLoader.unload();
	contentLoader.unloadAndStop();
	
	/*while(content_mc.numChildren > 0){
		content_mc.removeChildAt(0);
	}*/
	
	contentLoader = null;
	urlRequest = null;
	url = "";
		
	load_btn.addEventListener(MouseEvent.CLICK, loadTheMovie);
}