Hey Alex, Thanks for your reply.
I solved my issue. for some reason my custom component never got it's systemManager set. This is not a problem when all you add to the component are Hboxes or labels apparently, but as soon as you add an image the systemManager must be set. All i did was to set it manually in the preinitialize event handler of my weather component : this.systemManager = this.parentDocument.systemManager. After that it worked like a charm! Do you know when the systemManager is set in the components lifecycle? Maybe it wasn't set because my creation policy was set to "none" ... just a wild guess really :-) Thanks for your help, Tony. --- In [email protected], Alex Harui <aha...@...> wrote: > > Maybe IDSWeather::init() is being called before IDSWeather has been added as > a child to a container. > > Alex Harui > Flex SDK Developer > Adobe Systems Inc.<http://www.adobe.com/> > Blog: http://blogs.adobe.com/aharui > > From: [email protected] [mailto:[email protected]] On > Behalf Of gordofeatherfoot > Sent: Monday, July 13, 2009 8:52 AM > To: [email protected] > Subject: [flexcoders] Issue adding an Image component to a custom component > > > > > > Hello, > > I have a problem that is not so easy to expose so please bare with me. > > I have a Component class written is AS3 which extends the Canvas Class. I > then have a weather component written in mxml that uses as a base the the > Component class. ie my weather component.mxml looks something like this: > > <components:Component > xmlns:components="net.zzzzzz.components.*" > xmlns:mx="http://www.adobe.com/2006/mxml"; > verticalScrollPolicy="off" horizontalScrollPolicy="off" > preinitialize="onPreInitialize()"> > ... > ... > <script .........> > <mx:HBox id="hbxBackground" width="256" height="120" /> > > <mx:HBox id="hbxInnerFrame" x="15" y="15" width="226" height="50"/> > > <mx:HBox id="hbxBottom" x="15" y="65" width="226" height="40"/> > > <mx:HBox id="hbxMiddle" x="15" y="40" width="226" height="40"/> > > <mx:Label id="lblLocation" x="15" y="12" width="226"/> > > <mx:Image id="meteoImg" x="56" y="63" /> -----> this causes the error ! > > <mx:Label id="lblTemperature" x="132" y="40" width="100"/> > > <mx:Label id="lblDayTitle" x="15" y="78" width="226"/> > </components:Component> > > This weather component is compiled into a swf seperatly from my main app. > In my main app I load the weather component definition from the swf with a > loader. I instantiate this weather component (by extracting it's definition > through the loader) and add it to the stage. > > When adding it to the stage i get the following error: > > TypeError: Error #1009: Cannot access a property or method of a null object > reference. > at > mx.controls::SWFLoader/addedToStageHandler()[C:\autobuild\3.3.0\frameworks\projects\framework\src\mx\controls\SWFLoader.as:1990] > at flash.display::DisplayObjectContainer/addChildAt() > at > mx.core::UIComponent/http://www.adobe.com/2006/flex/mx/internal::$addChildAt()[C:\autobuild\3.3.0\frameworks\projects\framework\src\mx\core\UIComponent.as:5083] > at > mx.core::Container/addChildAt()[C:\autobuild\3.3.0\frameworks\projects\framework\src\mx\core\Container.as:2215] > at > mx.core::Container/addChild()[C:\autobuild\3.3.0\frameworks\projects\framework\src\mx\core\Container.as:2140] > at > mx.core::Container/createComponentFromDescriptor()[C:\autobuild\3.3.0\frameworks\projects\framework\src\mx\core\Container.as:3681] > at > mx.core::Container/createComponentsFromDescriptors()[C:\autobuild\3.3.0\frameworks\projects\framework\src\mx\core\Container.as:3493] > at > IDSWeather/init()[/Users/bounce/Documents/IdScreen/Components/src/IDSWeather.mxml:375] > > This error happens when flex is trying to add the Image component that i > defined in the mxml of the weather component. Specifically this error happens > in SWFLoader in the following function: > > private function addedToStageHandler(event:Event):void > { > systemManager.getSandboxRoot().addEventListener(InterManagerRequest.DRAG_MANAGER_REQUEST, > mouseShieldHandler, false, 0, true); > } > > Here 'systemManager' is null and i don't understand why. > > Any help would be very much appreaciated. > > Many thanks, > Bounce. >
