>
>
If found that I do not get the error when I leave this filterfunction out:
public function set cables ( k : ArrayCollection ) : void
{
_cables = new ArrayCollection( k.toArray() );
//_cables.filterFunction = filterCables; // generates error
//_cables.refresh();
}
private function filterCables( item : ConnectorModel ) : Boolean
{
return item.value > 0;
}
On 10/24/07, Alex Harui <[EMAIL PROTECTED]> wrote:
> >
> > Are you doing a reset or remove? Are you removing rows that are locked?
> >
> >
> > ------------------------------
> >
> > *From:* [EMAIL PROTECTED] ups.com [mailto:[EMAIL PROTECTED]
> > * On Behalf Of *Webdevotion
> > *Sent:* Wednesday, October 24, 2007 7:43 AM
> > *To:* [EMAIL PROTECTED] ups.com
> > *Subject:* Re: [Flexcoders] Error from
> > mx\controls\listClasses\ListBase.as
> >
> >
> >
> > That's a good question ... The application is quite big, I'll have to
> > look into that.
> > But yes, it occurs when I go back some screens and reset the
> > dataprovider.
> >
> > Thanks for that fresh insight.
> >
> >
> > On 10/24/07, *Daniel Freiman* <[EMAIL PROTECTED]> wrote:
> >
> > This appears to be happening when you remove an item from the
> > dataProvider. Is there anything unique about the dataProvider or how you're
> > removing the item from the dataProvider?
> >
> > - Dan Freiman
> >
> > On 10/24/07, *Webdevotion* < [EMAIL PROTECTED] > wrote:
> >
> > Hey everyone,
> >
> > I've been hunting a bug down for a while now in a Flex project:
> >
> > *This is the generated error: *
> > TypeError: Error #1009: Cannot access a property or method of a null
> > object reference.
> > *at mx.controls.listClasses::ListBase/collectionChangeHandler()
> > [C:\dev\flex_201_gmc\sdk\frameworks\mx\controls\listClasses\ListBase.as:6496]
> > *
> > at
> > mx.controls.listClasses::TileBase/collectionChangeHandler()[C:\dev\flex_201_gmc\sdk\frameworks\mx\controls\listClasses\TileBase.as:1981]
> > at flash.events::EventDispatcher/dispatchEventFunction ()
> > at flash.events::EventDispatcher/dispatchEvent()
> > at
> > mx.collections::ListCollectionView/dispatchEvent()[C:\dev\flex_201_gmc\sdk\frameworks\mx\collections\ListCollectionView.as:833
> > ]
> > at
> > mx.collections::ListCollectionView/moveItemInView()[C:\dev\flex_201_gmc\sdk\frameworks\mx\collections\ListCollectionView.as:1316
> > ]
> > at
> > mx.collections::ListCollectionView/handlePropertyChangeEvents()[C:\dev\flex_201_gmc\sdk\frameworks\mx\collections\ListCollectionView.as:1124]
> >
> >
> >
> > at
> > mx.collections::ListCollectionView/listChangeHandler()[C:\dev\flex_201_gmc\sdk\frameworks\mx\collections\ListCollectionView.as:1042
> > ]
> > at flash.events::EventDispatcher/dispatchEventFunction ()
> > at flash.events::EventDispatcher/dispatchEvent ()
> > at
> > mx.collections::ArrayList/internalDispatchEvent()[C:\dev\flex_201_gmc\sdk\frameworks\mx\collections\ArrayList.as:518]
> >
> > at
> > mx.collections::ArrayList/itemUpdateHandler()[C:\dev\flex_201_gmc\sdk\frameworks\mx\collections\ArrayList.as:544]
> > at flash.events::EventDispatcher/dispatchEventFunction()
> > at flash.events::EventDispatcher/dispatchEvent()
> >
> >
> > *The rule that throws the error*
> > // RULE 6493 in ListBase.as
> > //( found at : C:\Program Files\Adobe\Flex Builder 2 Plug-in\Flex SDK
> > 2\frameworks\source\mx\controls\listClasses )
> > // make sure we've generated rows for the actual data
> > // at startup time we might just have blank rows
> > if (listItems.length && listItems[lockedRowCount].length )
> >
> > *Screenshot*
> > For those interested, this is the dump of listItems:
> > screenshot<http://content.screencast.com/media/d25bbc5a-9b36-42ee-8393-b2e2f48929f8_8373bf5e-323c-46b9-94a3-68ac1e9fbb8f_static_0_0_image.png>
> >
> >
> > Any thought are greatly appreciated!
> > Bram
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
>
>
