NumericStepper with stepSize=0.1 set value to NaN

Question

I have a spark NumericStepper :
<s:NumericStepper value="0" stepSize="0.1" />
When I first click on the NumericStepper to increment the value, it goes from "0" to "0.1", it's ok.
But when I click again to increment or decrement, it displays "NaN".
I debug the NumericStepper and it seems my default locale is fr_FR and it waits for the "," decimal separator instead of "."
But if I try to set stepSize="0,1" I have a compilation error because 0,1 can't be cast to a Number.
Is it a bug ? is there a workaround to have a decimal stepSize with french locale ?

Answer 1

There are really two separate issues here:
(1) Halo NumberValidator produces a validation error for decimal values when locale is set to fr_FR
(2) Spark NumericStepper does not change decimal separator based on locale
I will file a separate issue for the Halo NumberValidator issue.  The issue filed by Bill can be used to track the decimal separator not changing based on locale.
As a workaround, you can change the way the value is displayed by the NumericStepper by using the valueFormatFunction and valueParseFunction.
For example, the following will replace the "." decimal separator with a ",".
<fx:Script>
<![CDATA[
private function myFormatFunc(val:Number):String
return val.toString().replace(".",",");
private function myParseFunc(val:String):Number
var stringVal:String = val.replace(",",".");
return Number(stringVal);     
]]>
</fx:Script>
<s:NumericStepper id="ns" stepSize="0.1" value="0" valueFormatFunction="myFormatFunc" valueParseFunction="myParseFunc"/>