FLEX4中使用URLLoader与后台交互请求XML文件
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<?xml version="1.0" encoding="utf-8"?><s:Application xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/mx" xmlns:amcharts="http://www.amcharts.com/com_internal" backgroundColor="#FFFFFF" width="100%" height="100%" initialize="initializeHandler(event)"><fx:Script> private var _myService:URLLoader;private function initializeHandler(event:Event):void {_myService = new URLLoader( );_myService.addEventListener(Event.COMPLETE,myCompleteHandler);_myService.load(new URLRequest("fileName.xml"));XML.ignoreWhitespace = true;}private function myCompleteHandler(event:Event):void {var xml:XML = new XML(_myService.data);myComboBox.dataProvider = xml.children( );}</fx:Script><mx:VBox><mx:ComboBox id="myComboBox" /></mx:VBox></s:Application>