flex中在地图上绘制点（遍历数组坐标）

 

   //定义图层
   private var labelGraLayer:GraphicsLayer=new GraphicsLayer(); 

在方法中写：

     var trw:TrWushuikouCols=new TrWushuikouCols()
     var ss:Array=TrWushuikouCols.rowcol;
     var c:Number=ss.length;//定义循环次数
     labelGraLayer.clear();//清空
     map.addLayer(labelGraLayer);//加载图层
     for(var i:int=0;i<c;i++)
     {
      var obj:Object=ss[i] as Object;        
      var point:MapPoint=new MapPoint(obj.row,obj.col);
      var symbol:PictureMarkerSymbol=new PictureMarkerSymbol("assets/i_pin.png",30,30,0,0);
      var graphic:Graphic=new Graphic(point,symbol);
      labelGraLayer.add(graphic);
     }

     if(map)
      map.centerAt(point);