why setIsOpen() doesn't work for a tree component

[rexyanhx]

I want to open a node of a tree component when it is loading. But when I used setIsOpen(), it doesn't work. My script is as follows:

var myTree:mx.controls.Tree;
var myTreeDP:XML = new XML();
myTreeDP.ignoreWhite = true;
myTreeDP.load("test.xml");

myTreeDP.onLoad = function(success:Boolean) {
myTree.dataProvider = this.firstChild;
myTree.setIsOpen(myTree.getTreeNodeAt(1),true, true);

};

Please help me!

Thanks in advance.

 

[kennethkawamoto]

It works for me. But [tt]setIsOpen()[/tt] will not work if there is no node to open. [tt]myTree.getTreeNodeAt(1)[/tt] is the second node in the XML - does your XML has second child node?

Kenneth Kawamoto

http://www.materiaprima.co.uk

 

[rexyanhx]

You are right, Kenneth. My XML has no second child node, so when I tried:
myTree.setIsOpen(myTree.getTreeNodeAt(0),true, true);

I does work.

Thank you so much, Kenneth.