If you want to listen to events that are dispatched from Application, you need to listen at either Application.application or (better) make them bubble, and listen on the SystemManager.
-Josh On Tue, Jan 6, 2009 at 8:58 AM, stldvd <stl...@yahoo.com> wrote: > OK, here's a little app to demonstrate the problem. I'm sure the > answer is obvious, but... can someone point it out? > > The Application and the Canvas go in the src folder; the custom event > (FoodEvent) goes in an 'events' folder inside src. > > I made the canvas because I wanted the event to be heard in a > different component from the Application itself. > > <?xml version="1.0" encoding="utf-8"?> > <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"; > layout="horizontal" xmlns:food = "*"> > <mx:Script> > <![CDATA[ > > import events.FoodEvent; > > [Bindable] > public var food_supply:Array = [{label:"Pizza Pie", > data:"Pizza"},{label:"Buffalo Wings", data:"Wings"}]; > > private function onFoodCBChange():void > { > var item:Object = foodCB.selectedItem; > if(item == null) > return; > > var event:FoodEvent = new FoodEvent(FoodEvent.FOOD_EVENT); > event.selectedItemFromFoodCB = item.data; > this.dispatchEvent(event); > } > ]]> > </mx:Script> > <mx:Canvas height="167" width="200"> > <mx:ComboBox x="40" y="20" > dataProvider="{food_supply}" > id="foodCB" textAlign="left" change="onFoodCBChange()"/> > </mx:Canvas> > <food:testCanvas /> > </mx:Application> > > <?xml version="1.0" encoding="utf-8"?> > <mx:Canvas xmlns:mx="http://www.adobe.com/2006/mxml"; > creationComplete="this.addEventListener(FoodEvent.FOOD_EVENT, > foodEventhandler)" > borderStyle="solid" borderColor="red" borderThickness="3" x="300" > y="300" width="200" height="200"> > <mx:Script> > <![CDATA[ > import events.FoodEvent; > import mx.controls.Alert; > > private function foodEventhandler(e:FoodEvent):void > { > Alert.show(e.selectedItemFromFoodCB); > } > > ]]> > </mx:Script> > </mx:Canvas> > > package events > { > import flash.events.Event; > > public class FoodEvent extends Event > { > > public static const FOOD_EVENT:String = 'food.event'; > > public var selectedItemFromFoodCB:String; //Used to > pass selection value > > public function FoodEvent(type:String, > bubbles:Boolean=false, > cancelable:Boolean=false) > { > super(type, bubbles, cancelable); > } > > } > } > > --- In flexcoders@yahoogroups.com, "Tracy Spratt" <tspr...@...> wrote: > > > > It will depend on where and how the listener is declared. > > CreationComplete fires at different times for different components. As > > I recall, it is bottom up, so creationComplete for a parent will fire > > after creationComplete for a child. If the parent creationComplete > > handler declares the listener, then there would be a problem. > > > > > > > > This should only be an issue on start-up. Certainly the listener would > > be available when the app was ready to receive user input, via ComboBox > > or button click, as the original poster noticed. > > > > > > > > Remember that events flow through the DOM. It is possible for a > > dispatched event to "miss" a component. Pop-ups are a particular > > problem. > > > > > > > > Tracy > > > > > > > > ________________________________ > > > > From: flexcoders@yahoogroups.com [mailto:flexcod...@yahoogroups.com] On > > Behalf Of stldvd > > Sent: Monday, January 05, 2009 4:48 PM > > To: flexcoders@yahoogroups.com > > Subject: [flexcoders] Re: why I can not dispatchEvent with > > creationComplete? > > > > > > > > I'm having a similar issue. Event is dispatched (I can step through > > code and see it) but the event listener is never hearing it, and so > > the listener function is never being fired. > > > > How does one tell if the listener is ready or not? If you add the > > listener on the creationcomplete or initialize event of an mxml > > component, it should in theory be ready to fire, for the duration of > > the app, right? And if you're dispatching a custom event when an item > > is selected in a combobox, it should certainly work. What could be the > > reason for a 'deaf' event listener? :) > > > > -- David > > > > --- In flexcoders@yahoogroups.com > > <mailto:flexcoders%40yahoogroups.com<flexcoders%2540yahoogroups.com> > > > > , "Tracy Spratt" <tspratt@> wrote: > > > > > > Perhaps the listener is not yet ready when the canvas creationComplete > > > fires? > > > > > > Tracy > > > > > > > > > > > > ________________________________ > > > > > > From: flexcoders@yahoogroups.com > > > <mailto:flexcoders%40yahoogroups.com<flexcoders%2540yahoogroups.com> > > > > [mailto:flexcoders@yahoogroups.com > > <mailto:flexcoders%40yahoogroups.com<flexcoders%2540yahoogroups.com> > > > > ] On > > > Behalf Of markflex2007 > > > Sent: Monday, January 05, 2009 2:08 PM > > > To: flexcoders@yahoogroups.com > > > <mailto:flexcoders%40yahoogroups.com<flexcoders%2540yahoogroups.com> > > > > > Subject: [flexcoders] why I can not dispatchEvent with > > creationComplete? > > > > > > > > > > > > I try the following code, But I can not dispatchEvent. > > > > > > <mx:Canvas xmlns:mx="http://www.adobe.com/2006/mxml > > <http://www.adobe.com/2006/mxml> > > > <http://www.adobe.com/2006/mxml <http://www.adobe.com/2006/mxml> > " > > > creationComplete="justLogin()" > > > > <mx:Metadata> > > > [Event(name="loginEvent", type="flash.events.Event")] > > > </mx:Metadata> > > > <mx:Script> > > > <![CDATA[ > > > > > > > > > private function justLogin():void{ > > > > > > dispatchEvent(new Event("loginEvent", false)); > > > > > > } > > > ]]> > > > </mx:Script> > > > > > > </mx:Canvas> > > > > > > I can dispatchEvent with button click, please let me know how to > > > automatic dispatchEvent in page start. > > > > > > Thanks > > > > > > Mark > > > > > > > > > ------------------------------------ > > -- > Flexcoders Mailing List > FAQ: http://groups.yahoo.com/group/flexcoders/files/flexcodersFAQ.txt > Alternative FAQ location: > https://share.acrobat.com/adc/document.do?docid=942dbdc8-e469-446f-b4cf-1e62079f6847 > Search Archives: > http://www.mail-archive.com/flexcoders%40yahoogroups.comYahoo! Groups > Links > > > > -- "Therefore, send not to know For whom the bell tolls. It tolls for thee." Like the cut of my jib? Check out my Flex blog! :: Josh 'G-Funk' McDonald :: 0437 221 380 :: j...@gfunk007.com :: http://flex.joshmcdonald.info/ :: http://twitter.com/sophistifunk
