EKReminder's lastModifiedDate property doesn't work?

Question

I'm integrating my app with EventKit, and listening for EKEventStoreChangedNotifications. When one comes in, I'd like to see which reminders have changed in some way since the last update. I had hoped I could just use the lastModifiedDate property, but it doesn't seem to change -- it's always the same as the creation date, even for reminders that I know I've updated on another device.

Any idea what's going on and if there's a fix?

Thanks.

Answer 1

We ran into this bug as well.

We found out that lastModifiedDateworks when:

The event is created and modified only by the Desktop or Web Calendar Interface. When you change it on your iPhone, lastModifiedDate won't be updated by Desktop/Web any longer.

• Create event on Desktop -> lastModifiedDate is set
• Check event on iPad -> lastModifiedDate correct
• Modify event on Desktop and check event on iPad -> lastModifiedDate is updated
• Modify event on iPad and check event on Desktop -> lastModifiedDate is updated
• Modify event on Desktop and check event on iPad -> lastModifiedDate is NOT updated

OR

Desktop and Web Interface are not used. Tested with iPad Calendar App, GoogleMail and Exchange. Events can be modified on both ends of synchronisation.