You should use a debug build and post the full stack trace.
________________________________ From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of txakin Sent: Wednesday, April 23, 2008 12:16 AM To: [email protected] Subject: [flexcoders] Re: TypeError: Error #2007: The parameter listener must not be NULL + Cairngorm Nobody can help me????????????? I have more than 2 days trying to fix it....but i can not.... Maybe i have explained in wrong way my problem. Thanks in advance. --- In [email protected] <mailto:flexcoders%40yahoogroups.com> , "txakin" <[EMAIL PROTECTED]> wrote: > > > Hi all > > I´m trying to display an image from database in my application using > Cairngorm framework. > > I always get the same error : > > TypeError: Error #2007: The parameter listener must not be NULL > > at flash.events::EventDispatcher/addEventListener () > > and I don´t know if is because my source is incorrect or because > i´m forgetting some step. > > Here I will send u my source....and my classes. > > > > I´m going to try to explain my source step by step. > > 1. First of all....i have one repeater it calls other component: > > <mx:Repeater id="grdMovies" width="100%" height="100%" > horizontalCenter="0" bottom="0"> > > > > <detail:detailMovie id="detailmovie" > myMovie="{grdMovies.currentItem}"/> > > <mx:HRule width="90%"/> > > </mx:Repeater> > > > > 1. My component detailMovie calls my event to get my image. > > > > <mx:Canvas xmlns:mx="http://www.adobe.com/2006/mxml > <http://www.adobe.com/2006/mxml> " width="548" > height="142" > > backgroundColor="#FFFFFF" backgroundAlpha="0.0" > creationComplete="loadData();"> > > > > <mx:Script> > > <![CDATA[ > > public function loadData():void > > { > > var getCoverRepeaterEvent:GetCoverRepeaterEvent > = new GetCoverRepeaterEvent(myMovie.movieId); > > getCoverRepeaterEvent.dispatch(); > > } > > > > public function > loaderCompleteHandler(event:Event):void > > { > > this.movie_cover.source = > event.currentTarget.content as Bitmap; > > } > > ]]> > > </mx:Script> > > > > <mx:Image x="10" y="31" width="91" height="101" id="movie_cover"/> > > </mx:Canvas> > > > > > > 1. SampleController : > > > > package com.cairngorm.control { > > > > import com.adobe.cairngorm.control.FrontController; > > import com.cairngorm.commands.*; > > import com.cairngorm.commands.movieimage.repeater.*; > > import com.cairngorm.events.movieimage.repeater.*; > > > > public class SampleController extends FrontController { > > > > public function SampleController() { > > this.initialize(); > > } > > > > public function initialize():void { > > > > // ADD COMMANDS > > this.addCommand( > GetCoverRepeaterEvent.GET_COVER_REPEATER, GetCoverRepeaterCommand); > > > > ..............................other commands > ............................ > > } > > > > } > > } > > > > 1. MovieImageDelegate : Here i call the java class....and is > correct....but i have taken it out my java class....because i think is > not very important > > > > package com.cairngorm.business.movieimage > > { > > import com.adobe.cairngorm.business.ServiceLocator; > > > > import mx.rpc.IResponder; > > > > public class MovieImageDelegate > > { > > private var responder : IResponder; > > private var service : Object; > > > > public function MovieImageDelegate(responder : IResponder) > > { > > this.responder = responder; > > this.service = > ServiceLocator.getInstance().getRemoteObject("movieImageObject"); > > } > > > > public function getCover(pMovieImageId:String):void > > { > > var call:Object = service.getCover (pMovieImageId); > > call.addResponder(responder); > > } > > } > > } > > > > 1. GetCoverRepeaterEvent : > > > > package com.cairngorm.events.movieimage.repeater > > { > > import com.adobe.cairngorm.control.CairngormEvent; > > > > import flash.events.Event; > > > > public class GetCoverRepeaterEvent extends CairngormEvent { > > > > public static const GET_COVER_REPEATER:String = > "GetCoverRepeater"; > > > > public var movieImageId:String; > > > > public function > GetCoverRepeaterEvent(submittedMovieImageId:String) { > > movieImageId = submittedMovieImageId; > > super(GET_COVER_REPEATER); > > } > > > > override public function clone():Event { > > return new GetCoverRepeaterEvent(movieImageId); > > } > > > > } > > } > > > > 1. GetCoverRepeaterCommand : Here I get correctly my image > > > > package com.cairngorm.commands.movieimage.repeater > > { > > import com.adobe.cairngorm.commands.ICommand; > > import com.adobe.cairngorm.control.CairngormEvent; > > import com.cairngorm.business.movieimage.MovieImageDelegate; > > import > com.cairngorm.events.movieimage.repeater.GetCoverRepeaterEvent; > > import com.cairngorm.model.ViewModelLocator; > > import com.cairngorm.vo.MovieImage; > > > > import mx.controls.Alert; > > import mx.rpc.IResponder; > > > > public class GetCoverRepeaterCommand implements ICommand, > IResponder > > { > > public var modelLocator:ViewModelLocator = > ViewModelLocator.getInstance(); > > > > public function GetCoverRepeaterCommand() { > > > > } > > > > public function execute(event:CairngormEvent):void { > > > > var getCoverRepeaterEvent:GetCoverRepeaterEvent = > event as GetCoverRepeaterEvent; > > var delegate:MovieImageDelegate = new > MovieImageDelegate(this); > > delegate.getCover (getCoverRepeaterEvent.movieImageId); > > } > > > > public function result(event:Object):void > > { > > if (event.result == null) > > { > > Alert.show("The cover can not be > displayed.","WARNING"); > > modelLocator.movieCoverRepeater = null; > > } > > else > > { > > var myMovieImage:MovieImage = event.result as > MovieImage; > > modelLocator.movieCoverRepeater = > myMovieImage.cover; > > modelLocator.displayImageRepeater(); > > } > > } > > > > public function fault(event:Object):void > > { > > trace("Service Error!!!!! " + event.toString()); > > Alert.show("Can not open the database connection. Inform to the > administrator!!!!!" + event.toString().substr(0,600),"ERROR > CONFIGURATION"); > > } > > > > } > > } > > > > > > 1. ViewModelLocator : > > > > package com.cairngorm.model { > > > > import com.adobe.cairngorm.model.IModelLocator; > > import com.cairngorm.vo.Movie; > > > > import flash.display.DisplayObject; > > import flash.events.Event; > > import flash.utils.ByteArray; > > > > import mx.events.IndexChangedEvent; > > > > [Bindable] > > public class ViewModelLocator implements IModelLocator { > > > > private static var instance:ViewModelLocator; > > > > public function ViewModelLocator (enforcer:SingletonEnforcer) > { > > if (enforcer == null) { > > throw new Error( "You Can Only Have One > ViewModelLocator" ); > > } > > } > > > > public static function getInstance() : ViewModelLocator { > > if (instance == null) { > > instance = new ViewModelLocator( new > SingletonEnforcer ); > > } > > return instance; > > } > > > > // DEFINE YOUR VARIABLES HERE > > .............. other variables ..................... > > public var movieCoverRepeater:ByteArray; > > > > public var workflowState:uint = 0; > > > > // DEFINE VIEW CONSTANTS > > public static const LOGIN_SCREEN:uint = 0; > > public static const MAIN_SCREEN:uint = 1; > > > > > > import flash.display.Loader; > > > > public function displayImageRepeater():void { > > if (this.movieCoverRepeater != null && > this.movieCoverRepeater.length > 0) > > { > > var loader:Loader = new Loader(); > > loader.loadBytes(this.movieCoverRepeater); > > loader.contentLoaderInfo.addEventListener (Event.COMPLETE, > Application.application.repeatermovies.detailmovie.loaderCompleteHand ler\ > ); > > } > > } > > } > > } > > > > // Utility Class to Deny Access to Constructor > > class SingletonEnforcer {} > > > > > > > > Then when I execute the addEventListener....i always get the > error: > > TypeError: Error #2007: The parameter listener must not be NULL > > at > flash.events::EventDispatcher/addEventListener() > > > > I don´t know why....... Maybe I need to call my > functions after execute one event in my application or I lose some > source in my classes? I must tell.....untill call the > addEventListener....all the values are correct......and my image has > value. > > > > I hope someone can help me....because i have 2 days....blocked....and > i´m going to become crazy. > > > > Sorry if my englisg is not so good....but i´m spanish. > > > > Thanks is advance..... >
