On Dec 18, 2019, at 12:39 PM, Jean-Daniel <mail...@xenonium.com> wrote: > >> Le 18 déc. 2019 à 20:10, Carl Hoefs via Cocoa-dev <cocoa-dev@lists.apple.com >> <mailto:cocoa-dev@lists.apple.com>> a écrit : >> >>> On Dec 18, 2019, at 11:35 AM, James Walker via Cocoa-dev >>> <cocoa-dev@lists.apple.com <mailto:cocoa-dev@lists.apple.com>> wrote: >>> >>> On 12/18/19 9:55 AM, Carl Hoefs via Cocoa-dev wrote: >>> >>>> However, I cannot get this notification to fire on system time changes. My >>>> other notifications (such as sleep wake, etc) do fire. >>>> -Carl >>>> [[[NSWorkspace sharedWorkspace] notificationCenter] addObserver: self >>>> selector: @selector(systemTimeChanged:) >>>> name: NSSystemClockDidChangeNotification object: NULL]; >>>> -(void) systemTimeChanged: (NSNotification *) notification >>>> { >>>> NSLog(@"-systemTimeChanged: %@", [notification name]); >>>> } >>> >>> I'm not sure what that workspace notification center is for. Maybe try >>> [NSNotificationCenter defaultCenter]. >> >> >> Thanks for the suggestion. Apple docs have [[[NSWorkspace sharedWorkspace] >> notificationCenter] in their code snippets. But [NSNotificationCenter >> defaultCenter] doesn't work either. Very odd. Might there be some way in >> Xcode or Console to see what notifications are being fired? >> > > Workspace Notification Center is only for workspace specific notifications. > All other notifications are send on the default Notification Center only. > > I just did test, and I properly receive notifications on each time change in > the System preferences.
Argh, I ran my test incorrectly... I just now verified that using [NSNotificationCenter defaultCenter] works for both NSSystemClockDidChangeNotification and NSSystemTimeZoneDidChangeNotification, as it should. But Workspace notifications, like NSWorkspaceWillSleepNotification and NSWorkspaceDidWakeNotification require [[NSWorkspace sharedWorkspace] notificationCenter]. Makes sense. > On Dec 18, 2019, at 2:18 PM, Jens Alfke <j...@mooseyard.com> wrote: > > If you add an observer with a notification name and object of nil, it will > receive all notifications sent to that center. That's very handy to know! Thanks to all! -Carl _______________________________________________ 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
