Flex使用sort对ArrayCollection进行排序、筛选操作

 

 

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml "
 layout="horizontal"
 verticalAlign="middle"
 horizontalAlign="center">

 <mx:Script>
  <![CDATA[
   import mx.collections.SortField;
   import mx.collections.Sort;
   import mx.collections.ArrayCollection;
   
   [Bindable]
   public var myCollection:ArrayCollection = new ArrayCollection([{label:"A"},
   {label:"B"},{label:"C"},{label:"D"},{label:"E"},{label:"F"}]);
   //排序
   public function sortCollection():void
   {
    var sort:Sort = new Sort();
    sort.fields = [new SortField("label",true,true)];
    myCollection.sort = sort;
    myCollection.refresh(); //应用更改
   }

 

  public function stateFilter(item:Object):Boolean
   {
    return item.label >= "B" && item.label <= "D";
   }
   //筛选
   public function filterCollection():void
   {
    myCollection.filterFunction = stateFilter;
    myCollection.refresh();
   }

  ]]>
 </mx:Script>
 
 <mx:List dataProvider="{myCollection}" width="200" />
 <mx:Button label="Sort Collection1" click="sortCollection();" />

 <mx:Button label="Sort Collection2" click="filterCollection();" /> 
</mx:Application>