Flex中对ArrayCollection进行排序

利用ArrayCollection的sort属性

<?xml version="1.0" encoding="utf-8"?> 
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute"> 
 <mx:Script> 
 <![CDATA[ 
 import mx.collections.SortField; 
 import mx.collections.Sort; 
 import mx.collections.ArrayCollection; 
 private var acSort:ArrayCollection=new ArrayCollection([
 {id:0,userName:"zhangSan",age:21},
 {id:2,userName:"liSi",age:24},
 {id:1,userName:"wangWu",age:31}]); 
 
 
 private function sortAc():ArrayCollection
 { 
 var sort:Sort=new Sort(); 
 //按照ID升序排序 
 sort.fields=[new SortField("id")]; 
 
 //按照userName降序排序 
 sort.fields=[new SortField("userName",true,true)]; 
 
 //先按ID升序,再按userName降序 
 sort.fields[new SortField("id"),new SortField("userName",true)]; 
 acSort.sort=sort; 
 acSort.refresh();//更新 
                 ?return acSort; 
 }  
 ]]> 
 </mx:Script> 
</mx:Application>