Alex, didn't tell me once about the order of the actions (setStyle, addChild) would also impact? Cant' remember what was the order but styling and adding it as a child would also force additional invalidations.
Regarding virtual layout, do the items need to be all visible at the same time? I would recomend to use as the most lightweight component as possible, does your container need to be a mx:VBox? Couldn't he simply be a s:VBox (doesn't have any styling)? Even to optimize it further, instead of creating all those nested containers, you could use a s:List with a custom layout do place your lightweight items. On 8 December 2016 at 19:19, Alex Harui <aha...@adobe.com> wrote: > Run a profiler to see what is taking so much time. It could be just > adding that many children, or it could be something each child does when > being added that could be optimized or deferred for later. > > If it is just adding that many children, you could create an array of them > and add them in bunches over several frames. > > -Alex > > On 12/8/16, 9:54 AM, "gmanupnorth" <gordoncro...@gmail.com> wrote: > > >This piece of code is causing significant lag in our UI and was looking > >for > >suggestions on how to improve it. This builds up a list of approx 1400 > >items > >and takes 35-50 seconds to finish. > > > > > >AssetTreeChild is a custom component based on the VBOX AssetTreeChild.mxml > ><http://apache-flex-development.2333347.n4.nabble. > com/file/n57076/AssetTre > >eChild.mxml> > > > > > >public function setAgentItem(value:SmartAgentVO):void > > { > > this.agentItem = value; > > if ( value.Children!=null && > value.Children.length>0 ) > > { > > var assetComp:AssetTreeChild; > > for each ( var item:SmartAgentVO > in value.Children ) > > { > > assetComp = new > AssetTreeChild(); > > list.addChild(assetComp); > > > assetComp.setAgentItem(item); > > assetComp.setStyle(" > textIndent",7); > > } > > } > > } > > > > > > > >-- > >View this message in context: > >http://apache-flex-development.2333347.n4.nabble. > com/Slow-performance-1000 > >-objects-tp57076.html > >Sent from the Apache Flex Development mailing list archive at Nabble.com. > > -- João Fernandes
