大师怎么给CheckBox implements ICellRenderer的类设true或false

gaowenzhen 2012-07-16 10:26:35

我是flash 中actionscript3.0 中用到

有两个类 DataGridExample.as和CheckBoxRenderer.as

DataGridExample.as 类中的动态创建了一个DataGrid
因第一列要用到CheckBox，我就用到了ICellRenderer，

CheckBoxRenderer.as
原来有一个addEventListener(Event.CHANGE,onCheckChange);方法可老和DataGridExample类的Event.CHANGE跑到一起
就不能准确的判断出true或false，因为程序是默认DataGridExample执行完自已的事件才能执行到CheckBoxRenderer类
如下是程序大师看一眼

#################################################
最终要求：点DataGrid第一列某个CheckBox得到真或假，同事得到DataGrid当前行的index,最好是在DataGridExample类中可以用到这些值感谢
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package 

{

	import flash.display.Sprite;

	import flash.display.Shape;

	import flash.events.Event;

	import flash.text.TextField;



	import fl.data.DataProvider;

	import fl.controls.Label;



	import fl.controls.ScrollBarDirection;

	import flash.display.Bitmap;

	import fl.controls.CheckBox;





	import fl.controls.DataGrid;

	import fl.controls.ScrollPolicy;

	import fl.data.DataProvider;

	import flashx.textLayout.container.ColumnState;

	import flash.events.MouseEvent;

	import flash.utils.setTimeout;















	public class DataGridExample extends Sprite

	{



		public function DataGridExample()

		{



		}

		public function setfilelistdata(w:int=0,h:int=0,imgadatalistarry:Array=null):void

		{

			createDataGrid(w,h,imgadatalistarry);

		}



		private var dg:DataGrid = new DataGrid();

		private var dp:DataProvider= new DataProvider();

		public function createDataGrid(w:int,h:int,imgdataarry:Array):void

		{



			if (dg != null && dg.parent != null)

			{

				dg.parent.removeChild(dg);

				dg = null;

			}





			var i:uint;

			for (i = 0; i < imgdataarry.length; i++)

			{

//这里一个数组

dp.addItem({selete:i,data:Bitmap(imgdataarry[i].imgbit),GPS:imgdataarry[i].gps,"时间":imgdataarry[i].rsDateTime});

			}





			dg.setSize(w,h);

			dg.columns = ["选择","图片","GPS","时间"];

			dg.dataProvider = dp;

			dg.move(5,30);

			dg.rowHeight = 140;

			dg.getColumnAt(0).width = 40;

			dg.getColumnAt(1).width = 200;

			dg.getColumnAt(2).width = 200;

			dg.resizableColumns=false;

			dg.getColumnAt(0).cellRenderer = CheckBoxRenderer;

			dg.addEventListener(Event.CHANGE,onCheckChange);

			addChild(dg);

			



		}

		

		private var CheckBoxclass:CheckBoxRenderer;

		public function onCheckChange(e:Event):void

		{

			if(CheckBoxclass==null)

			CheckBoxclass=new CheckBoxRenderer();			

			CheckBoxclass.onCheckChange();			 

			

		}



	}







}



CheckBoxRenderer.as

package

{ 

    import fl.controls.CheckBox; 

    import fl.controls.listClasses.ICellRenderer; 

    import fl.controls.listClasses.ListData; 

    import flash.events.Event; 

    import fl.core.InvalidationType; 

    public class CheckBoxRenderer extends CheckBox implements ICellRenderer 

    { 

        public var _listData:ListData; 

        public var _data:Object; 

  

        public function CheckBoxRenderer(){ 

          // super(); 

          // addEventListener(Event.CHANGE,onCheckChange); 

        } 

        public function set data(d:Object):void{ 

           _data = d; 

           label = ""; 

           _selected = (_data["checked"]=='true')?true:false; 

        } 

        public function get data():Object { 

           return _data; 

        } 

        public function get selectedItem():Object { 

           return _data; 

        } 

        public function get listData():ListData { 

            return _listData; 

        } 

        public function set listData(value:ListData):void { 

            _listData = value; 

        } 

        override public function get selected():Boolean { 

            return _selected; 

         } 

       override public function set selected(value:Boolean):void {

       } 

	    private var DataGridcheckstrin:DataGridExample;

		//e:Event

        public function onCheckChange() {

			trace("因不行我就考虑到从DataGridExample直接执行它可如下会报错");

             _selected = !_selected; 

			this["checked"]=(_selected==true)?'true':'false';

            //_data["checked"] = (_selected==true)?'true':'false';

			//if(DataGridcheckstrin==null){

				//DataGridcheckstrin=new DataGridExample();

				//}

				//DataGridcheckstrin.rseonCheckChange((_selected==true)?'true':'false');

			

       } 

     } 

  }