Got it, so that's the issue then, how do I know if my itemRenderer is off the screen so I can reset it's measuredHeight, is there a way I can find this information out?
Thanks, Patrick --- In [email protected], Alex Harui <aha...@...> wrote: > > The list always remeasures the renderers. It assigns the .data property, > sets explicitWidth then calls measure(), then checks for explicitHeight then > measuredHeight, and that's the height it uses. > > But if you can only see three renderers, it will probably create a new one > for the one just off-screen, but it will re-use the first renderer for the > fifth row assuming the first row is now off-screen. If that renderer still > thinks it is in the expanded state when it is not representing row 5 which is > not expanded, then scrolling will be off. > > 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 djhatrick > Sent: Friday, October 02, 2009 10:09 AM > To: [email protected] > Subject: [flexcoders] Re: variableRowHeight > > > > OK makes sense, the problem I am having is that if I have 4 item renderers, i > expand renderers 1,2,3, and if the 4th one is out of view.... when I scroll > the list it does not work, until I expand the 4th item, then the scroll works > correctly? > > Is there a way to force the list to remeasure the height of all the renderers > to determine how scrolling works? > > Thanks, > Patrick > > --- In [email protected]<mailto:flexcoders%40yahoogroups.com>, Alex > Harui <aharui@> wrote: > > > > Remember that renderers are recycled so the size of the renderer must be > > determined from the .data property, it can't just be stored in the renderer > > instance. > > > > Alex Harui > > Flex SDK Developer > > Adobe Systems Inc.<http://www.adobe.com/> > > Blog: http://blogs.adobe.com/aharui > > > > From: [email protected]<mailto:flexcoders%40yahoogroups.com> > > [mailto:[email protected]<mailto:flexcoders%40yahoogroups.com>] On > > Behalf Of djhatrick > > Sent: Thursday, October 01, 2009 6:19 AM > > To: [email protected]<mailto:flexcoders%40yahoogroups.com> > > Subject: [flexcoders] variableRowHeight > > > > > > > > I have collapsing/expanding item renderers in a List, all works well, but > > there is a case where the scrolling doesn't work correctly? > > > > Is there a way to force the list to measure all of it's item renderers > > correctly please? > > > > Thanks, > > Patrick > > >
