AH, I GET IT NOW! I was having awful troubles with an ArrayAdapter recycling random views to me, in a list which used different kinds of views. The errors were maddening until I figured out what was going on, using that part of your book. It's absolutely insane...until you understand why they do it, and then it makes (some) sense. Phew.
-- Eric On Sep 19, 4:34 am, Mark Murphy <[email protected]> wrote: > Carmen Delessio wrote: > > Watch this video: > >http://code.google.com/events/io/sessions/TurboChargeUiAndroidFast.html > > Check Mark Murphy's bookhttp://commonsware.com/Android/index.html > > > Read several posts here: > >http://www.androidguys.com/2008/07/14/fancy-listviews-part-one/ > > > Short answer: > > ConvertView is a previously returned view. You can reuse it without > > having to make a view from scratch. > > So you can avoid costly operations. So you are correct about optimization. > > See the holder pattern. > > Thanks for the shout-out! > > Since those blog posts are as old as the hills (in Android years), I > make the chapter in my original book that covers this topic available as > a free excerpt: > > http://commonsware.com/Android/excerpt.pdf > > For short lists, convertView is not a big deal. For long lists, it's > rather important to avoid creating ten tons of (memory) garbage. > > -- > Mark Murphy (a Commons > Guy)http://commonsware.com|http://twitter.com/commonsguy > > _Android Programming Tutorials_ Version 1.0 Available! --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~----------~----~----~----~------~----~------~--~---
