On Mon, Feb 1, 2010 at 10:20 AM, Kyle Sluder <kyle.slu...@gmail.com> wrote: > Ooh. So you need to perform this operation synchronously but still pole the > main thread (performing UI work is actually irrelevant; you need to run the > runloop to avoid the spinning beachball anyway). > > So in your override of -writeToURL:…, spin off the background thread like I > suggested, then set up your UI, and then start running the runloop in a > special modal mode until your background thread is done.
Running the runloop is necessary but not sufficient to avoid a SPOD. What you need to do to avoid that is to process events. One solution to all these various problems is to put up a modal panel. It processes events, thus avoiding the SPOD, it uses a special runloop mode, avoiding recursive callouts, it gives you a place to put your progress graphics, and it prevents the user from messing with the rest of your app while all this is going on. Mike _______________________________________________ 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
