Check out this post <http://blog.fastlanesw.com/?p=25> on my blog where
I discuss and demonstrate performance diffs using various item renderers
in Flex. Source code is available if you run the app and right click.
Notice how the optimized renderer does not use layout containers such as
HBox, etc. Instead it extends the AdvancedDataGridItemRenderer class.
In general you want to make your renderers as light weight as possible.
hth
Scott
Scott Melby
Founder, Fast Lane Software LLC
http://www.fastlanesw.com
letterpigeon wrote:
Hi all,
I'm seeing a huge performance degradation while using custom item
renderer with a datagrid. My datagrid is using a custom item renderer
for all its column. And even if my item renderer does nothing more
than :
public override function data(value:object)
{
super.data = value;
}
I'm still seeing a few more seconds delay compared to not using custom
item renderers for a data set of 50 rows or more.
Just wondering if this is a known issue with flex due to heavy graphic
rendering? Any pointers on how to speed things up a little bit? Thanks.
Ban
