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定义个DataRenderer

   
   		
    			
    		
    		
     		
     	
    		
    
     		@namespace s "library://ns.adobe.com/flex/spark";		@namespace mx "library://ns.adobe.com/flex/mx";		.InfoExpandButton {			disabledSkin: Embed(source="/assets/swf/skins2.swf", symbol="Callout_expandButtonDisabledSkin");			downSkin: Embed(source="/assets/swf/skins2.swf", symbol="Callout_expandButtonDownSkin");			overSkin: Embed(source="/assets/swf/skins2.swf", symbol="Callout_expandButtonOverSkin");			upSkin: Embed(source="/assets/swf/skins2.swf", symbol="Callout_expandButtonUpSkin");		}				.InfoCloseButton {			disabledSkin: Embed(source="/assets/swf/skins2.swf", symbol="Callout_closeButtonDisabledSkin");			downSkin: Embed(source="/assets/swf/skins2.swf", symbol="Callout_closeButtonDownSkin");			overSkin: Embed(source="/assets/swf/skins2.swf", symbol="Callout_closeButtonOverSkin");			upSkin: Embed(source="/assets/swf/skins2.swf", symbol="Callout_closeButtonUpSkin");		}	
    		
    		
     	
    		
    		
     			
      			
      			
      		
     						
     			
      				
       			
      						
      				
       				
       			
      						
      				
       				
       			
      						
      				
       				
       			
      			
     				
     	
    	
   

使用该renderer

protected function btnShowVideoInfo_clickHandler(event:MouseEvent):void			{				var videoLayerName:String="sde.SDE.MonitorPoint";				//var videoLayerName:String="sde.SDE.RainMonitory";				featureLayer=MapUtil.getFeatureLayerByName(videoLayerName);								//featureLayer增加feature				featureLayer.addEventListener(GraphicEvent.GRAPHIC_ADD,graphicAddedHandler);				featureLayer.visible=true;								/**				 * feature添加处理函数				 */ 				function graphicAddedHandler(event:GraphicEvent):void{/* 					var features:ArrayCollection=featureLayer.graphicProvider as ArrayCollection;					for each(var feature:Graphic in features){						displayFeatureInfoSymbol(feature);					}  */					displayFeatureInfoSymbol(event.graphic);				}				}			private function displayFeatureInfoSymbol(feature:Graphic,data:Object=null):void{				var infoSymbol:InfoSymbol=new InfoSymbol();				infoSymbol.infoRenderer=new ClassFactory(MoniotorPointInfoSymbolRenderer);				feature.symbol=infoSymbol;				feature.alpha=0.8;				//feature.visible=false;			}

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