如何在Flex Tree控件中展开特定节点

Question

这是我正在使用的代码......

dp = CategoryParser.createDataProvider( Application.application.categoriesmanager.categoryBaseList);

var xList:XMLList = dp..category.(hasOwnProperty("@categoryid") && @categoryid == 1491);

categoryTree.expandItem(xList, true);

Answer 1

有两种方法：

tree.openItems = xList;详情请http://blog.flexexamples.com/2008/01/15/expanding-nodes-in-a-flex-tree-control-using-the-openitems-property/

或者在其他情况下这一个

http://blog.flexexamples.com/2007/12/02/expanding-and-collapsing-flex-tree-nodes-using-the-expanditem-and-expandchildrenof-methods/