Comments on: More Glassy Scrolling with UITableView http://www.fieryrobot.com/blog/2008/10/08/more-glassy-scrolling-with-uitableview/ Defender of Corporate Headquarters Fri, 09 Dec 2011 06:14:31 +0000 hourly 1 http://wordpress.org/?v=3.2.1 By: Peter http://www.fieryrobot.com/blog/2008/10/08/more-glassy-scrolling-with-uitableview/comment-page-1/#comment-215220 Peter Thu, 01 Sep 2011 17:06:28 +0000 http://www.fieryrobot.com/blog/?p=111#comment-215220 <p>Use NSCache and you're done.</p> Use NSCache and you’re done.

]]> By: godspeedlzu http://www.fieryrobot.com/blog/2008/10/08/more-glassy-scrolling-with-uitableview/comment-page-1/#comment-211352 godspeedlzu Tue, 24 May 2011 03:00:55 +0000 http://www.fieryrobot.com/blog/?p=111#comment-211352 <p>I need to create tableView with a refresh View at the botton ,when pulled to the last cell, if you want to get more information shown in cells,go on to pull up,then more information can be parsed and finally shown on the cells.The effect can be seen on the Weico( a client blog application for iPhone or Ipad),but I don't know how to realize such visual effect?</p> I need to create tableView with a refresh View at the botton ,when pulled to the last cell, if you want to get more information shown in cells,go on to pull up,then more information can be parsed and finally shown on the cells.The effect can be seen on the Weico( a client blog application for iPhone or Ipad),but I don’t know how to realize such visual effect?

]]> By: godspeedlzu http://www.fieryrobot.com/blog/2008/10/08/more-glassy-scrolling-with-uitableview/comment-page-1/#comment-210532 godspeedlzu Wed, 04 May 2011 09:20:52 +0000 http://www.fieryrobot.com/blog/?p=111#comment-210532 <p>I need to create tableView with a refresh View at the botton ,when pulled to the last cell, if you want to get more information shown in cells,go on to pull up,then more information can be parsed and finally shown on the cells.The effect can be seen on the Weico( a client blog app for iPhone or Ipad),but I don't know how to realize such visual effect?</p> I need to create tableView with a refresh View at the botton ,when pulled to the last cell, if you want to get more information shown in cells,go on to pull up,then more information can be parsed and finally shown on the cells.The effect can be seen on the Weico( a client blog app for iPhone or Ipad),but I don’t know how to realize such visual effect?

]]> By: Alfredo http://www.fieryrobot.com/blog/2008/10/08/more-glassy-scrolling-with-uitableview/comment-page-1/#comment-154812 Alfredo Sat, 21 Feb 2009 18:33:48 +0000 http://www.fieryrobot.com/blog/?p=111#comment-154812 <p>sorry what's the _item.identifier? O.o?</p> sorry what’s the _item.identifier? O.o?

]]> By: mike http://www.fieryrobot.com/blog/2008/10/08/more-glassy-scrolling-with-uitableview/comment-page-1/#comment-147820 mike Mon, 12 Jan 2009 21:21:24 +0000 http://www.fieryrobot.com/blog/?p=111#comment-147820 <p>I hope you can create a post on how to make a UIScrollView respond to touches and swipes at the same time and still scroll like glass... I am trying to figure out how to implemente touchesbegan, touchesmoved, touchesended and scrollViewDidScroll on the same controller. I have subclassed UIScrollView but it stopped scrolling like glass... very frustrating...</p> I hope you can create a post on how to make a UIScrollView respond to touches and swipes at the same time and still scroll like glass… I am trying to figure out how to implemente touchesbegan, touchesmoved, touchesended and scrollViewDidScroll on the same controller. I have subclassed UIScrollView but it stopped scrolling like glass… very frustrating…

]]> By: Ed http://www.fieryrobot.com/blog/2008/10/08/more-glassy-scrolling-with-uitableview/comment-page-1/#comment-147186 Ed Fri, 09 Jan 2009 04:08:38 +0000 http://www.fieryrobot.com/blog/?p=111#comment-147186 <p>Is there more or less room in said shared memory?</p> Is there more or less room in said shared memory?

]]> By: Andrew Ebling http://www.fieryrobot.com/blog/2008/10/08/more-glassy-scrolling-with-uitableview/comment-page-1/#comment-147054 Andrew Ebling Thu, 08 Jan 2009 11:41:47 +0000 http://www.fieryrobot.com/blog/?p=111#comment-147054 <p>Try using a layer rather than a bitmap images. Layers get cached in the shared video memory, whereas bitmaps do not.</p> Try using a layer rather than a bitmap images. Layers get cached in the shared video memory, whereas bitmaps do not.

]]> By: Ed http://www.fieryrobot.com/blog/2008/10/08/more-glassy-scrolling-with-uitableview/comment-page-1/#comment-144706 Ed Wed, 24 Dec 2008 18:10:15 +0000 http://www.fieryrobot.com/blog/?p=111#comment-144706 <p>Yeah, this will definitely fail miserably if you have a lot of rows. As mentioned, it's a rather extreme approach. Definitely better suited for data sets where you know the size will be relatively small (1-200 items).</p> <p>In the end, I didn't end up using this solution myself (mostly because I had some sharing issues), but I couldn't see a lot of user-noticeable performance improvement in the end after playing with it turned on and off.</p> <p>But I do know that there are other products that use an ever more extreme case of this: they buffer the entire view into a giant scrollable bitmap. The performance is super-smooth, but clearly they can't deal with variable length tables without making the phone explode.</p> Yeah, this will definitely fail miserably if you have a lot of rows. As mentioned, it’s a rather extreme approach. Definitely better suited for data sets where you know the size will be relatively small (1-200 items).

In the end, I didn’t end up using this solution myself (mostly because I had some sharing issues), but I couldn’t see a lot of user-noticeable performance improvement in the end after playing with it turned on and off.

But I do know that there are other products that use an ever more extreme case of this: they buffer the entire view into a giant scrollable bitmap. The performance is super-smooth, but clearly they can’t deal with variable length tables without making the phone explode.

]]> By: Raj http://www.fieryrobot.com/blog/2008/10/08/more-glassy-scrolling-with-uitableview/comment-page-1/#comment-144672 Raj Wed, 24 Dec 2008 13:49:17 +0000 http://www.fieryrobot.com/blog/?p=111#comment-144672 <p>nice trick for light weight applications, however have you tried it with heavy applications (say 1000+ rows and lots of text columns and multiple tables)?</p> <p>my only fear is the app might end up with multiple calls to didReceiveMemoryWarning this loading and freeing data multiple times</p> <p>i am also juggling between more memory versus faster scroll performance. for the time being, i am going the apple way (loading data from db only when needed, displaying it, releasing it - no caching) as my app is dealing with a lot of data</p> <p>i am also exploring the option of not closing the db connection (i know its risky) but having it open makes the db reads a lot faster i guess</p> <p>it would be cool if you could give me some insight as to how many rows and columns are you caching in memory</p> <p>cheers, raj</p> <p>http://www.iphonekicks.com</p> nice trick for light weight applications, however have you tried it with heavy applications (say 1000+ rows and lots of text columns and multiple tables)?

my only fear is the app might end up with multiple calls to didReceiveMemoryWarning this loading and freeing data multiple times

i am also juggling between more memory versus faster scroll performance. for the time being, i am going the apple way (loading data from db only when needed, displaying it, releasing it – no caching) as my app is dealing with a lot of data

i am also exploring the option of not closing the db connection (i know its risky) but having it open makes the db reads a lot faster i guess

it would be cool if you could give me some insight as to how many rows and columns are you caching in memory

cheers, raj

http://www.iphonekicks.com

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