Comments on: Disappearing data in your itemRenderer?

By: Kalen Gibbons

Kalen Gibbons — Mon, 21 Feb 2011 20:44:56 +0000

Russ,
I believe Priyank is referring to the commitProperties() method of your component, as described here: http://livedocs.adobe.com/flex/3/html/help.html?content=ascomponents_advanced_2.html

By: Russ

Russ — Mon, 21 Feb 2011 16:52:39 +0000

So can anyone post a code example of Priyank’s tip? I just don’t get the second part, “and inside commit properties call validate now” what is the commit properties?

By: Kalen Gibbons

Kalen Gibbons — Fri, 03 Sep 2010 19:45:10 +0000

Thanks for the tip Priyank.

By: Priyank Namdeo

Priyank Namdeo — Fri, 03 Sep 2010 06:11:09 +0000

Above solution is good in some sense but not fruitful every time. To hit the nail, you should override the data setter and force commit properties using invalidateProperties(), and inside commit properties call validate now. This works perfectly!

By: Andrew

Andrew — Thu, 08 Jul 2010 13:25:53 +0000

This solution worked great for me. Thanks!

On my ItemRenderer:

import mx.events.FlexEvent;

private function init():void
{
this.addEventListener(FlexEvent.DATA_CHANGE,val);
}

private function val(evt:FlexEvent):void
{
this.validateNow();
}

By: Dan Petitt

Dan Petitt — Fri, 24 Apr 2009 05:15:41 +0000

Unfortunately this still doesnt work for me … its much worse on my Vista x64 machine at work than my Win XP machine at home, but I still get the disappearing text. I even have an image to the left of the text that always appears and the row has a minheight the size of the image, but the text still disappears sometimes and gets progressively worse. This is a real bad bug as far as I am concerned, there must be a way around it that works completely as apps like Twhirl dont suffer this problem, I wonder how they are doing it.

By: Dan Petitt

Dan Petitt — Tue, 21 Apr 2009 14:55:52 +0000

So glad someone else was experiencing this … I have been pulling my hair out with this thinking it was a bug I had caused or something. I will be trying the solution tonight when I get home! Thanks!!

By: Kalen Gibbons

Kalen Gibbons — Tue, 09 Dec 2008 05:59:52 +0000

Thanks a bunch Olivier, that worked like a charm. I created a new post to demonstrate what you suggested. You can find it at http://www.kalengibbons.com/blog/index.php/2008/10/disappearing-data-in-your-itemrenderer/.

By: Olivier Lalonde

Olivier Lalonde — Sat, 29 Nov 2008 04:12:19 +0000

Try forcing validation when changing the data. In your renderer, at creation complete, add an event listener on “dataChange” and call validateNow() in the function used by the listener.