Only visible items have renderers, plus a couple off-screen ones, regardless of how much datat there is. Please use a debug version and show the entire stack trace.
________________________________ From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of David Ham Sent: Tuesday, October 02, 2007 7:06 AM To: flexcoders@yahoogroups.com Subject: [flexcoders] Honey, my ItemRenderer is fubar! I have a List with a custom item renderer. Each item in the list will have a slightly different height, and I got this working through the generous help of Alex and Tracy on this list. Here's the thing: My app started crashing yesterday, and I traced it to my set data() method, which is as follows: override public function set data(value:Object):void { if ( value != null) { super.data = value; var item:FeedItem = value as FeedItem; if ( item.linkStatus == false ) { itemTitle.setStyle("fontStyle", "italic"); itemTitle.setStyle("color", 0x999999); itemText.styleName = "brokenLink"; itemSource.styleName = "brokenLink"; } else { itemTitle.setStyle("fontStyle", "normal"); itemTitle.setStyle("color", 0x333333 ); itemText.styleName = "normLink"; itemSource.styleName = "normLink"; } dispatchEvent( new FlexEvent(FlexEvent.DATA_CHANGE) ); } The error I get is a #1009 null object reference. I hadn't wanted to use set data() at all, but I need to display my items differently based on their linkStatus, and this was not working when I did it in commitProperties(), where I thought it should go. In a possibly related issue, what are the guidelines for how much data a List can display? My dataProvider has 7000+ items, and the list can toggle between different filtered views of this data. Some of the views contain a thumbnail image, and when you toggle between a thumbnail view and a non-thumbnail, it hangs for several seconds. Any way to optimize this, or is my data set just too big? Thanks as always, OK DAH
