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From "Ejaz Asghar (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLEX-33611) TileLayout scrolling is worst (v slow) on many android devices including Nexus 7 and Nexus 10
Date Thu, 18 Jul 2013 00:56:48 GMT

    [ https://issues.apache.org/jira/browse/FLEX-33611?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13711884#comment-13711884
] 

Ejaz Asghar commented on FLEX-33611:
------------------------------------

@OmPrakash Muppirala ,
I'm able to improve the performance using iconItemRenderer ,  i was previously extending labelItemRenderer
and adding my BitmapImage using Gorup to sprite. So this problem is fixed, however i had to
spend 4 hours to understand the implementation of iConItemrenderer, for example it is not
clear how to change the index (setChildIndex) of the bitmapImage and other several questions,
perhaps an article explaining how bitmaps r handled in IconRenderer and how can we customize
their rendering order, partial opacity to each individual bitmap etc can b published on apache
blog after the release. Otherwise it vl b really difficuilt for new users to customize or
add more bitmaps to IconItemRenderer and still make it perform better.
You can close this issue, Thanks 
                
> TileLayout scrolling is worst (v slow) on many android devices including Nexus 7 and
Nexus 10
> ---------------------------------------------------------------------------------------------
>
>                 Key: FLEX-33611
>                 URL: https://issues.apache.org/jira/browse/FLEX-33611
>             Project: Apache Flex
>          Issue Type: Bug
>          Components: Spark: TileLayout
>    Affects Versions: Apache Flex 4.9.0
>         Environment: Flash Builder 4.7, Apache Flex 4.9, Air 3.7, Mobile Project
>            Reporter: Ejaz Asghar
>            Priority: Blocker
>              Labels: mobile, performance, tilelayout
>
> Hi, 
> my app which shows 100 160x160 images on a tile layout works great on iOS, 
> but on many devices even Nexus 7 or Nexus 10 scrolling is very very slow. We cant launch
the product with this. However vertical layout is much much better on same devices.
> It looks like TileList require a rewrite for mobile devices. I even specified fixed values
to columns, and tile sizes which are all 160x160 (no variable heights/widths). but still its
pretty slow.
> I'd appreciate if you guys incorporate a mobile friendly Tilelayout for Flex 4.10, which
provide fixed sizes of tiles and scroll as fast as vertical layout.
>  
> Thanks

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