Flex4中DataGrid,itemrender 多行多列值控制

Demo.mxml

public var selectedItems:Array = new Array(); //保存选中行

   //将数组中的行的status 改为Delete,并且刷新Grid
   private function removeSelectedItems():void{
       for(var i:int = 0; i<selectedItems.length; i++){
               selectedItems.status = "Deleted";
         
          }
       idata.refresh()  
}

<mx:DataGrid id="grid" dataProvider="{idata}">
   <mx:columns>
       <mx:DataGridColumn headerText="删除" dataField="action" itemRenderer="{new ClassFactory(iCheckBox)}" />
       <mx:DataGridColumn headerText="姓名" dataField="name" />
       <mx:DataGridColumn headerText="状态" dataField="status" />

   </mx:columns>
</mx:DataGrid>

iCheckBox.as (ItemRender)

override public function set data(value:Object):void{
       if(value.action.toString() == "true"){ //如果action为true,选中check box
           this.selected = true;
           Application.application.selectedItems.push(value) //将选中的数据保存起来
       }else{
           this.selected = false;
       }
       this.currentData = value; //保存整行的引用
   }

   //点击check box时，根据状况向selectedItems array中添加当前行的引用，或者从array中移除
   private function changeHandle(e:Event):void{
       var itemArray:Array = Application.application.selectedItems
       this.currentData.action = this.selected.toString()
       if(this.selected){
           itemArray.push(this.currentData)
       }else{
           for(var i:int = 0; i<itemArray.length; i++){
               if(itemArray == this.currentData){
                   itemArray.splice(i,1)
               }
           }
       }
   }

是上面的例子。 GridDemo1是修改了checkBox为不在dataProvider中的column,tab切换可以Z字跳转。