Custom component and custom event problem

Question

hello , i have a strange problem since one week , is that i can't handle the events becoming from my custom component , here is my code :
Event Class :
package events
     import flash.events.Event;
     public class Ev extends Event
          public static const UPDATE:String="update";
          public var data:String;
          public function Ev(type:String,data:String)
               super(type);
               this.data=data;
          override public function clone():Event
               return new Ev(type,data);
MXML component :
<?xml version="1.0" encoding="utf-8"?>
<mx:VBox xmlns:fx="http://ns.adobe.com/mxml/2009"
           xmlns:s="library://ns.adobe.com/flex/spark"
           xmlns:mx="library://ns.adobe.com/flex/mx">
     <fx:Metadata>
          [Event(name="onMenuChange",type="events.Ev")]
     </fx:Metadata>
     <fx:Script>
          <![CDATA[
               import events.Ev;
               import mx.events.IndexChangedEvent;
               protected function accordion1_changeHandler(event:IndexChangedEvent):void
                    dispatchEvent(new Ev(Ev.UPDATE,event.newIndex.toString()));
          ]]>
     </fx:Script>
     <fx:Declarations>
          <!-- Placer ici les éléments non visuels (services et objets de valeur, par exemple). -->
     </fx:Declarations>
     <mx:Accordion width="200" height="200" change="accordion1_changeHandler(event)">
          <s:NavigatorContent label="Menu 1" width="100%" height="100%">
          </s:NavigatorContent>
          <s:NavigatorContent label="Menu 2" width="100%" height="100%">
          </s:NavigatorContent>
          <s:NavigatorContent label="Menu 3" width="100%" height="100%">
          </s:NavigatorContent>
     </mx:Accordion>
</mx:VBox>
the main container :
<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
                  xmlns:s="library://ns.adobe.com/flex/spark"
                  xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="955" minHeight="600" xmlns:local="*">
     <fx:Script>
          <![CDATA[
               import events.Ev;
               import mx.controls.Alert;
               protected function comp1_onMenuChangeHandler(event:Ev):void
                    Alert.show(event.data,"notice");
          ]]>
     </fx:Script>
     <local:Comp onMenuChange="comp1_onMenuChangeHandler(event)"/>
</s:Application>
any help will be welcome !

Answer 1

hi,
Not sure why your custom event is not working, I tend not to worry about 'custom' events unless I need to transfer a lot of information.
Here is a way to 'simplify' event management.
I just declare a new event in the meta data and then send it to notify that a change has been made. Although the parent can find the index value easily enough I also use two-way bind the navigators index so that it is directly available for the application to manipulate/read .
http://gumbo.flashhub.net/events/  source included
David.