Question

I am trying to provide my own labelFunction for a CategoryAxis programatically but am completely stumped. The regular way is to do it in your MXML file, but I want to do it in my Actionscript file.

The regular way of doing it is:

<mx:Script>     <![CDATA[        private function categoryAxis_labelFunc(item:Object,                  prevValue:Object,                  axis:CategoryAxis,                  categoryItem:Object):String {                 return 'Some String';             }       ]]> </mx:Script>  <mx:CategoryAxis labelFunction='categoryAxis_labelFunc' /> 

But I want to achieve the same thing in my subclass of CategoryAxis, something like:

public class FauxDateAxis extends CategoryAxis {      public function FauxDateAxis() {         super();         labelFunction = categoryAxis_labelFunc // Doesn't work of course.     }          private function categoryAxis_labelFunc(item:Object,                  prevValue:Object,                  axis:CategoryAxis,                  categoryItem:Object):String {             return 'Another String';     }     } 

Answer 1

Well, I’m baffled by your problem, because it works absolutely fine for me.

I took the example application for CategoryAxis from the Adobe Flex site: http://livedocs.adobe.com/flex/3/langref/index.html?mx/charts/CategoryAxis.html&mx/charts/class-list.html, added your code verbatim (well except for adding package and import statments), and it worked just like you want it to.

In the example, I modified the line

<mx:CategoryAxis id='haxis' categoryField='Date' title='Date'/> 

to read

<local:FauxDateAxis id='haxis' categoryField='Date' title='Date'/> 

and it displayed ‘Another String’ at the base of each column.

I’m using Flex 3, if that matters.

Good Luck, Randy Stegbauer