学步园

                        //根据关键字查找节点
			private var temp:int = 0;
			private function searchCategory(key:String):void {
				var list:XMLList  = goodsModel.categorys.descendants().(@name.indexOf(key) != -1);
				if(key.length == 0) {
                                     closeAllCategory();
				} else {
					if(list.length() == 0) {
						Alert.show("没有找到相关信息！请重试","提示");
					} else if(list.length() == 1) {
						//展开并选中
						expandParents(list[0]); 
						myTree.selectedItem = list[0];
						//显示信息  根据查询的节点显示节点的详细信息  方法没写
						findCategoryById(XML(list[0]).@id);
					} else if(list.length() > 1) {
						if(temp < list.length()) {
							expandParents(list[temp]); 
							myTree.selectedItem = list[temp]; 
						} else {
							temp = 0;
							expandParents(list[temp]); 
							myTree.selectedItem = list[temp]; 
						}
						findCategoryById(XML(list[temp]).@id);
						temp ++;
					}
				}
			}