On Nov 18, 2011, at 18:48, Roland King wrote: > > On Nov 19, 2011, at 10:38 AM, Conrad Shultz wrote: > >> On 11/18/11 3:29 PM, Laurent Daudelin wrote: >>> There isn't much special code in that UITableView subclass and not >>> much either in the UITableViewController so I'm a little bit at a >>> lost as to what could cause this. There is nothing fancy here, no >>> custom handling of touches and things like that, just loading a bunch >>> of cells and then loading more when we reach the bottom of the table >>> view and there is more data to load. >>> >>> Anyone has any idea where I could look for this? >> >> Nothing's jumping out for me (at least I can't recall seeing this behavior). >> >> How are you adding more data? >> >> I assume that since you are bothering to load more data only when you >> reach the bottom that you are downloading some data for display. I also >> assume you are being a good iOS citizen by doing this download on a >> background thread/queue. If so, is it possible that you are >> accidentally doing some UI work on the background thread? In >> particular, might you be calling one of the -reloadData methods? I >> could certainly see that causing UITableView to end up in an >> inconsistent state... >> > > +1, I was just typing something similar, doing any UI work at all on a > background thread often leads to very odd behavior and I note in your second > mail that you say when you touch another UI element it all redraws nicely, > that is another symptom I've seen before after doing UI work on the > background thread. > > If you are, I would highly recommend blocks to throw the work back to the > main thread again, block programming and dispatch queues are possibly one of > the nicest things Apple has added in the last few years, they just make stuff > like this SO easy.
Thanks for the pointer, I'll check how the stuff is loaded and see if anything UI-related could be executed in the operation queue we're using to load the data. -Laurent. -- Laurent Daudelin AIM/iChat/Skype:LaurentDaudelin http://www.nemesys-soft.com/ Logiciels Nemesys Software laur...@nemesys-soft.com _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
