Resizing a flex application

Question

I am trying to write a resize function for my flex
application. I have pasted a simple sample below, but when I try to
run this application I get the following error:
TypeError: Error #1009: Cannot access a property or method of
a null object reference.
This is my application:
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="
http://www.adobe.com/2006/mxml"
layout="absolute" resize="resizeHandler()">
<mx:Script>
<![CDATA[
private function resizeHandler():void {
t.text = stage.width + " - " + stage.height;
t.text += "\n" + stage.stageWidth + " - " +
stage.stageHeight;
]]>
</mx:Script>
<mx:Panel x="10" y="10" width="250" height="200"
layout="absolute">
<mx:TextArea id="t" x="0" y="0" text="test"/>
</mx:Panel>
</mx:Application>
Can someone tell me where I am going wrong?
Thanks in advance

Answer 1

DIsplay Object Stage would cause the exception the first time
you run the application. A simple if condition can help you
overcome the issue..
private function resizeHandler():void {
if(stage != null){
t.text = stage.width + " - " + stage.height;
t.text += "\n" + stage.stageWidth + " - " +
stage.stageHeight;
}