flex调用webservices查询中国城市天气返回的是数组类型

<?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" minWidth="955" minHeight="600" creationComplete="init()">
	<fx:Script>
		<![CDATA[
			import mx.controls.Alert;
			import mx.collections.ArrayCollection;
			import mx.rpc.events.ResultEvent;
			import mx.rpc.soap.LoadEvent;
			import mx.rpc.soap.WebService;
			public var web:WebService;
			
			import spark.events.IndexChangeEvent;

			public function init():void
			{
				web=new WebService();
				web.wsdl="http://www.webxml.com.cn/WebServices/WeatherWebService.asmx?WSDL";
				web.loadWSDL();
				web.addEventListener(LoadEvent.LOAD,getConn);
				web.getSupportProvince();//webservices中的方法
				web.getSupportProvince.addEventListener(ResultEvent.RESULT,getProvince);
			}
			public function getConn(event:Event):void
			{
				lblState.text+="连接成功";
			}
			public function getProvince(event:ResultEvent):void
			{
				var provinces:ArrayCollection=new ArrayCollection();
				provinces=event.result as ArrayCollection;
				cmbProvince.dataProvider=provinces;
				cmbProvince.selectedIndex=0;
			}
			protected function cmbProvince_changeHandler(event:IndexChangeEvent):void
			{
				web.getSupportCity(cmbProvince.selectedItem);
				web.getSupportCity.addEventListener(ResultEvent.RESULT,getCity);
			}
			public function getCity(event:ResultEvent):void
			{
				var cities:ArrayCollection=new ArrayCollection();
				cities=event.result as ArrayCollection;
				cmbCity.dataProvider=cities;
				cmbCity.selectedIndex=0;
			}


			protected function cmbCity_changeHandler(event:IndexChangeEvent):void
			{
				var cityTemp:String=cmbCity.selectedItem;
				var city:String=cityTemp.substring(0,cityTemp.indexOf("("));
				web.getWeatherbyCityName(city);
				web.getWeatherbyCityName.addEventListener(ResultEvent.RESULT,getWeather);
			}
			public function getWeather(event:ResultEvent):void
			{
				var msg:ArrayCollection=new ArrayCollection();
				msg=event.result as ArrayCollection;
				txtMsg.text="";
				for(var i:int=0;i<msg.length;i++)
				{
					txtMsg.text+=i+":"+msg[i]+"n";
				}
				img1.source="../flex_src/weather/a_"+msg[8];
				img2.source="../flex_src/weather/a_"+msg[9];
			}

		]]>
	</fx:Script>
	<s:layout>
		<s:BasicLayout/>
	</s:layout>
	<fx:Declarations>
		<!-- 将非可视元素（例如服务、值对象）放在此处 -->
	</fx:Declarations>
	<s:ComboBox x="31" y="54" id="cmbProvince" change="cmbProvince_changeHandler(event)"/>
	<s:ComboBox x="205" y="54" id="cmbCity" change="cmbCity_changeHandler(event)"/>
	<s:TextArea x="31" y="97" width="320" height="466" id="txtMsg"/>
	<s:Label x="32" y="21" text="连接状态：" width="320" height="26" id="lblState" fontSize="16"/>
	<mx:Image x="379" y="97" width="90" height="83" id="img1"/>
	<mx:Image x="379" y="214" width="90" height="91" id="img2"/>
</s:Application>