How many images are we talking about? What pixel dimensions are the images in the list? What are some of the sizes in bytes of the images being downloaded?
-Alex ________________________________________ From: Gabriele Campi [[email protected]] Sent: Monday, June 30, 2014 6:30 AM To: Javier Guerrero García; users Subject: Re: list of images: poor performances Nothing seems to work... performances are even worse with a timer or delay I cannot cache all the images because of memory consumption Il 28/06/14 10:44, Javier Guerrero García ha scritto: > Also adjust the opaqueBackground, don't set the image sources > inmediately but after a short timeout (so if you scroll down fast > skipping lets say 50 images you DON'T load 50 images before loading > the 51st), and use a contentCache loader with queueing > (http://corlan.org/2011/08/16/flex-mobile-development-caching-images-using-contentcache/) > > > P.S. you can use the ContentCache straight from MXML, not like the > sources in the link. Just declare it, set an ID and the rest of the > parameters, and set contentCache="{id}" in your itemRenderer. > > > On Sat, Jun 28, 2014 at 6:58 AM, Alex Harui <[email protected] > <mailto:[email protected]>> wrote: > > Make sure you are using a bitmap cache and that the images are not > being scaled down on the device. > Sent via the PANTECH Discover, an AT&T 4G LTE smartphone. > > Gabriele Campi <[email protected] > <mailto:[email protected]>> wrote: > > > Hi, > in a mobile app I need to display a list of 200 images. On the list I > use a tileLayout with virtualLayout=true and a custom itemRenderer > that > only contains a Spark Image. On the set value method of the > itemrenderer > I change the source of the image with the path to the new bitmap. > It works, but performances are poor and the list doesn't scroll > well. On > iPad it's almost acceptable, but on Android I have to scroll row > by row > and wait until every image of the row is loaded. > Any suggestions to improve the situation? > Thanks > > Gabriele > >
