Sorry, no magic sauce here. I had some pixie dust somewhere, but. Was it Asimov or Clark that said, "Any sufficiently advanced technology is indistinguishable from magic"?
When I needed a variable height renderer, I copied ListItemRenderer and modified to my needs. That was the only way I could get it to work. It is also *much* more performant than a container based renderer. The magic is indeed in the measure() function. If you do not have a lot of items to renderer, Repeater works well with variable heights. Tracy Spratt, Lariat Services, development services available _____ From: flexcoders@yahoogroups.com [mailto:flexcod...@yahoogroups.com] On Behalf Of wubac1 Sent: Saturday, April 18, 2009 2:02 AM To: flexcoders@yahoogroups.com Subject: [flexcoders] Custom List ItemRenderer / Recycling troubles (height incorrect) I'm attempting to create a very simple item renderer for mx:List. I've found that when the dataProvider is static, there are no problems with the custom item renderer. However, when the dataProvider is dynamic, the height of the item renderer is not correct (and scroll bars appear for each renderer with any meaningful # of rows). I've set variableRowHeight="true" for the List. I've also tried overriding the measure function and invaliding the size when a dataChange event is dispatched (based on information provided on FlexCoders in previous discussions along these lines). CommentRenderer.mxml: <?xml version="1.0" encoding="utf-8"?> <mx:VBox xmlns:mx="http://www.adobe. <http://www.adobe.com/2006/mxml> com/2006/mxml" width="100%"> <mx:Script> <![CDATA[ override protected function measure():void { super.measure(); measuredHeight = comment.textHeight; } ]]> </mx:Script> <mx:LinkButton label="{data.commenter.name}"/> <mx:Text id="comment" width="100%" text="{data.comment}" dataChange="invalidateSize()"/> </mx:VBox> The mx:List definition: <mx:List id="comments" itemRenderer="com.test.CommentRenderer" width="100%" height="100%"/> I've looked over the ListItemRenderer, but have so far been unable to glean the magic sauce that makes the item renderer function correctly when the control recycles. Can someone explain / provide a functional example(s) with mx:Text (ActionScript and MXML examples preferred, for completeness)?
