On Sun, Feb 3, 2013, at 05:09 PM, Todd Heberlein wrote: > I've added an NSInvocationOperation object to process a large file > asynchronously. Everything mostly works fine, but I am trying to add a > way for this NSInvocationOperation object to communicate its progress > back to the main thread (e.g., setting a percent of the file processed). > > I have an NSProgressIndicator value bound to a double variable > "loadingProgressPercent", and I have the operation updating that value > with > > self.loadingProgressPercent = percent_read * 100.0;
Do not do this. You'll send KVO on that property from the background thread that's running your operation. > Is there a common approach for an NSOperation object to communicate its > progress back to the main thread and have that progress value update an > NSProgressIndicator? Have your operation post new operations back to +[NSOperationQueue mainQueue] to update the loadingProgressPercent property. --Kyle Sluder _______________________________________________ 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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
