Check if Load Multiple XML file Complete. How ?!

No there are no core class doing that but it's quite easy to do it sequentially or to create a simple class that does that. That could go something like that:

1. pass an array of paths to your custom loader class:

var loader:MultipleLoader = new MultipleLoader(["path1.xml", "path2.xml"])

loader.addEventListener(Event.COMPLETE, moveOn);

loader.load();

Then in your MultipleLoader class you can do:

public function load():void

{

     loadNextXML();

}

private function loadNextXML(e:Event = null):void

{

     if(!myxmlarray.length)

     {

          dispatchEvent(e);

          return;

     }

     var path:String = myxmlarray.shift();

     //code to load each xml from the array that was passed and stored in myxmlarray Array

     //you register Event.COMPLETE with loadNextXML method so you can cycle until the array is empty

}