flex Array去重

1去重

2满足一定条件的筛选

Xml代码 复制代码 收藏代码
  1. <?xml version="1.0" encoding="utf-8"?>  
  2. <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"  creationComplete="init()" layout="absolute" fontSize="12" backgroundGradientAlphas="[1.0, 1.0]" backgroundGradientColors="[#FCFCFC, #FCFCFC]">  
  3.  <mx:Script>  
  4.   <![CDATA[  
  5.   import mx.collections.ArrayCollection;  
  6.   import mx.events.CloseEvent;  
  7.   public var temp:String="";  
  8.   [Bindable]private var filteredArr:Array;  
  9.      [Bindable]private var plistArr:Array;  
  10.      [Bindable]    
  11.         public var users:Array =[{id:1,username:"aaa", dept:"开发部"},     
  12.                         {id:2,username:"bbb", dept:"产品部"},     
  13.                      {id:3,username:"ccc", dept:"开发部"},                        
  14.                  {id:4,username:"ddd", dept:"产品部"}];  
  15.         
  16.       private function init():void{  
  17.         filteredArr = users.filter(removedDuplicates);   
  18.       }  
  19.       private var keys:Object = {};   
  20.       private function removedDuplicates(item:Object, idx:uint, arr:Array):Boolean {   
  21.                 if (keys.hasOwnProperty(item.dept)) {   
  22.                     return false;   
  23.                 } else {   
  24.                     keys[item.dept] = item;   
  25.                     return true;   
  26.                 }   
  27.             }   
  28.      
  29.       private function closeHandler(event:Event):void {  
  30.                 temp=String(ComboBox(event.target).selectedItem.dept);  
  31.                plistArr=users.filter(conditionFunction);  
  32.             }  
  33.  
  34.       private function conditionFunction(item:Object, idx:uint, arr:Array):Boolean {   
  35.                 if (item.dept==temp){  
  36.                     return true ;    
  37.                 }else{  
  38.                  return false;  
  39.                 }  
  40.                 
  41.             }          
  42.   ]]>  
  43.  </mx:Script>  
  44.   <mx:Form width="293" height="152"  horizontalCenter="0" verticalCenter="0" borderStyle="solid">  
  45.     <mx:FormItem label="部门：" width="250">  
  46.        <mx:ComboBox   close="closeHandler(event);"  labelField="dept" dataProvider="{filteredArr}"  width="100%"></mx:ComboBox>  
  47.     </mx:FormItem>  
  48.     <mx:FormItem width="250">  
  49.        <mx:Repeater id="checkBoxRepeater" dataProvider="{plistArr}">    
  50.     <mx:CheckBox id="checkBox" label="{checkBoxRepeater.currentItem.username}"/>    
  51.    </mx:Repeater>    
  52.   
  53.     </mx:FormItem>  
  54.     
  55.  </mx:Form>  
  56. </mx:Application>  

posted on 2011-09-13 15:36  破阵子 . 如是我闻  阅读(523)  评论(0)  编辑  收藏  举报

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