学步园

<mx:ComboBox id="list" width="125" height="26" change="list_changeHandler(event)"
				 chromeColor="#c2e7fe" cornerRadius="5" selectedIndex="0" textAlign="center"/>

			import mx.collections.ArrayCollection;
			import mx.events.ListEvent;
			import mx.rpc.xml.SimpleXMLDecoder;
			
			import spark.events.IndexChangeEvent;
			/**
			 * 传送数据
			 * @param newDatagv 源数据
			 */
			private function init():void
			{
				var XMlLoader:URLLoader = new URLLoader();
				XMlLoader.addEventListener(Event.COMPLETE,xmlcomplete);
				XMlLoader.addEventListener(IOErrorEvent.IO_ERROR,io_error);
				XMlLoader.load(new URLRequest(xmlurl));
			}
			private function xmlcomplete(evet:Event):void{
				xml = new XML(evet.currentTarget.data);
				//var xmllist:XMLList = new XMLList(xml.record.names);
				
				var xmlDoc:XMLDocument = new XMLDocument(xml)
				
				var decoder:SimpleXMLDecoder = new SimpleXMLDecoder();
				
				var data:Object = decoder.decodeXML( xmlDoc );
				cityarr = new ArrayCollection(data.string.record);
				list.dataProvider = cityarr;
				list.selectedIndex = 0;
			}
			private function io_error(evt:IOErrorEvent):void{
				trace(evt.text.toString())
			}