Nulls on the dataChange event

I have a custom ItemRenderer that uses the dataChange event to calculate the various bits and bobs when data changes, it works fine the first time that the data is loaded, but the second time it gives me a;

TypeError: Error #1009: cannot access a property or method of a null object reference

I have to reject and it works fine then...

<? XML version = "1.0" encoding = "utf-8"? >

" < = xmlns:fx s:ItemRenderer ' http://ns.Adobe.com/MXML/2009 "

xmlns:s = "library://ns.adobe.com/flex/spark".

xmlns:MX = "library://ns.adobe.com/flex/mx".

autoDrawBackground = "true" dataChange = "init ()" >

< fx:Script >

<! [CDATA]

Import mx.controls.Alert;

Import mx.controls.ToolTip;

Import mx.core.DragSource;

Import mx.core.IUIComponent;

Import mx.events.DragEvent;

Import mx.events.FlexEvent;

Import mx.events.ResizeEvent;

Import mx.managers.DragManager;

Import mx.managers.ToolTipManager;

Import spark.components.BorderContainer;

Import spark.components.Image;

Import spark.primitives.BitmapImage;

Import spark.primitives.Ellipse;

protected function init (): void

{

Switch (data.product_style_description)

{

It is on the line of switch (data.product_style_description), where it throws the error, I used the code and I seem to have that data... any help would be appreciated debugged.

Pete

... init (): void

If (! data |! data.product_style_description)

return;

Switch (data.product_style_description)

Keep in mind I don't know your business case so.

C

Tags: Flex

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