Glist 刷新数据

private changeData(backData){
		this.data_arr=backData["data"]["list"];
		if(this.data_arr){
			this.list_scroller.refreshVirtualList();
			this.list_scroller.itemRenderer = this.renderListItem_icon_list;
			this.list_scroller.callbackThisObj = this;			
			this.list_scroller.numItems =this.data_arr.length;

			// this.list_scroller.addSelection(10,true);
			// this.list_scroller.selectedIndex=0;
			// this.list_scroller.getChildAt(0).asButton.getController("button").selectedIndex=1;
		}
	}



this.list_scroller=this.getChild("list_scroller").asList;
		this.list_scroller.setVirtual();		
   		this.list_scroller.callbackThisObj = this;
		this.list_scroller.itemRenderer = this.renderListItem_icon_list;
		this.list_scroller.numItems =this.item_total_num;