Is there any non-private way of knowing how many notifications there are in the Notification Center (NSUserNotificationCenter) in Mountain Lion? Not just notifications from my app, but from all apps.
So, to sum things up, what I want to do is to retrieve the number of notifications displayed here:
I've tried to search around, but I can't find information about this. Any ideas?
Thanks in advance!
There is no public API to access notifications from other apps. The best way to access this information is to read the sqlite database located in ~/Library/Application Support/NotificationCenter/<UUID>.db. Note that this will only work if your app is not sandboxed.
来源：https://stackoverflow.com/questions/16761077/is-there-any-way-of-knowing-how-many-nsusernotifications-there-are-in-nsusernoti