Flex 2 Player r15 (debug version installed by builder) A repeater is bound to an ArrayCollection. The ArrayCollection is dynamically updated. Objects are added and removed at runtime. This works satisfactory. Now I want the removal of an object to trigger an effect which is much nicer than just removing an item from the screen with the blink of an eye. So I use the removedEffect in my custom component. The code looks something like this.
My custom component (just the bits that are relevant): <mx:Canvas xmlns:mx="http://www.adobe.com/2006/mxml"; creationComplete="initApp()" currentState="{assistant.availability}" horizontalScrollPolicy="off" verticalScrollPolicy="off" creationCompleteEffect="{appear}" removedEffect="{disappear}"> <mx:Parallel id="appear" > <mx:Fade alphaFrom="0" duration="1000"/> </mx:Parallel> <mx:Parallel id="disappear" > <mx:Fade alphaTo="0" duration="1000" /> </mx:Parallel> </mx:Canvas> ow the main application with the repeater (again just the relevant bits): <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"; pageTitle="SNS Bank" layout="absolute" horizontalAlign="center" verticalAlign="middle" width="800" height="600" creationComplete="initApp()" xmlns:local="*"> <mx:Script> <![CDATA[ [Bindable] private var assistants:ArrayCollection = new ArrayCollection(); </mx:Script> <mx:Tile height="245" top="29" borderStyle="none" dropShadowEnabled="false" width="350" horizontalCenter="0" backgroundColor="#FAA54C" backgroundAlpha="0.05"> <mx:Repeater id="rp1" dataProvider="{assistants}" recycleChildren="true" removed="{disappear}"> <local:AssistantRepresentationPanel id="assistantPanel" assistant="{rp1.currentItem}"/> </mx:Repeater> </mx:Tile> </mx:Canvas> When the removedEffect is defined on the custom component repeated within the Repeater and an element is removed from the ArrayCollection the Repeater is bound to, the error with stack trace occurs: TypeError: Error #1009: Cannot access a property or method of a null object reference. at mx.effects::EffectManager$/http://www.adobe.com/2006/flex/mx/internal::eventHandler()[C:\dev\GMC\sdk\frameworks\mx\effects\EffectManager.as:547] at flash.display::DisplayObjectContainer/removeChild() at mx.core::UIComponent/http://www.adobe.com/2006/flex/mx/internal::$removeChild()[C:\dev\GMC\sdk\frameworks\mx\core\UIComponent.as:4616] at mx.core::Container/removeChild()[C:\dev\GMC\sdk\frameworks\mx\core\Container.as:2324] at mx.core::Repeater/mx.core:Repeater::recycle()[C:\dev\GMC\sdk\frameworks\mx\core\Repeater.as:1049] at mx.core::Repeater/mx.core:Repeater::execute()[C:\dev\GMC\sdk\frameworks\mx\core\Repeater.as:1097] at mx.core::Repeater/mx.core:Repeater::collectionChangedHandler()[C:\dev\GMC\sdk\frameworks\mx\core\Repeater.as:1118] at flash.events::EventDispatcher/flash.events:EventDispatcher::dispatchEventFunction() at flash.events::EventDispatcher/dispatchEvent() at mx.collections::ListCollectionView/dispatchEvent()[C:\dev\GMC\sdk\frameworks\mx\collections\ListCollectionView.as:833] at mx.collections::ListCollectionView/mx.collections:ListCollectionView::removeItemsFromView()[C:\dev\GMC\sdk\frameworks\mx\collections\ListCollectionView.as:1367] at mx.collections::ListCollectionView/mx.collections:ListCollectionView::listChangeHandler()[C:\dev\GMC\sdk\frameworks\mx\collections\ListCollectionView.as:1022] at flash.events::EventDispatcher/flash.events:EventDispatcher::dispatchEventFunction() at flash.events::EventDispatcher/dispatchEvent() at mx.collections::ArrayList/mx.collections:ArrayList::internalDispatchEvent()[C:\dev\GMC\sdk\frameworks\mx\collections\ArrayList.as:518] at mx.collections::ArrayList/removeItemAt()[C:\dev\GMC\sdk\frameworks\mx\collections\ArrayList.as:371] at mx.collections::ListCollectionView/removeItemAt()[C:\dev\GMC\sdk\frameworks\mx\collections\ListCollectionView.as:596] at ProspectCenter/ProspectCenter::removeAssistant()[C:\fds2\jrun4\servers\dev\sns\ProspectCenter.mxml:187] at ProspectCenter/assistantStatusChangeHandler()[C:\fds2\jrun4\servers\dev\sns\ProspectCenter.mxml:144] at ProspectCenter/__assistantStatusConsumer_message()[C:\fds2\jrun4\servers\dev\sns\ProspectCenter.mxml:35] at flash.events::EventDispatcher/flash.events:EventDispatcher::dispatchEventFunction() at flash.events::EventDispatcher/dispatchEvent() at mx.messaging::Consumer/mx.messaging:Consumer::messageHandler()[C:\dev\enterprise_gmc\frameworks\mx\messaging\Consumer.as:943] at flash.events::EventDispatcher/flash.events:EventDispatcher::dispatchEventFunction() at flash.events::EventDispatcher/dispatchEvent() at mx.messaging::ChannelSet/mx.messaging:ChannelSet::messageHandler()[C:\dev\enterprise_gmc\frameworks\mx\messaging\ChannelSet.as:849] at flash.events::EventDispatcher/flash.events:EventDispatcher::dispatchEventFunction() at flash.events::EventDispatcher/dispatchEvent() at mx.messaging.channels::NetConnectionChannel/receive()[C:\dev\enterprise_gmc\frameworks\mx\messaging\channels\NetConnectionChannel.as:232] When stepping through the code in the debugger the error does not occur. Meaning that the breakpoint is set at the point where an element is removed from the ArrayCollection the Repeater is bound to. Can anyone verify this behaviour? Brgds, Eduard -- Flexcoders Mailing List FAQ: http://groups.yahoo.com/group/flexcoders/files/flexcodersFAQ.txt Search Archives: http://www.mail-archive.com/flexcoders%40yahoogroups.com Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/flexcoders/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
