问题
I have an app that programmatically adds reminders to your iOS device's calendar.
Previous to iOS 5, I could add a calendar item with two alarms thusly:
EKEventStore* eventStore = [[EKEventStore alloc] init];
EKEvent* event = [EKEvent eventWithEventStore:eventStore];
// set startDate, endDate, title, location, etc.
[event addAlarm:[EKAlarm alarmWithRelativeOffset:60.0f * -5.0f]]; // 5 min
[event addAlarm:[EKAlarm alarmWithRelativeOffset:60.0f * -15.0f]]; // 15 min
[event setCalendar:[eventStore defaultCalendarForNewEvents]];
NSError* error = nil;
BOOL success = [eventStore saveEvent:event span:EKSpanThisEvent error:&error];
On iOS 5 this freezes the application. It does not return with an error - it just never returns.
If I only call addAlarm once, it works as expected.
On iOS 4.2, calling addAlarm twice works just fine.
Am I doing something wrong?
回答1:
Its a bug with Apple. If you set 2 alarms it causes the app to freeze. If you only set 1 it works just fine. This is fixed in iOS 5.1 .
回答2:
If you take a look at the EventKit section in the iOS 5 changes from iOS 4.3 document, it mentions that some items are deprecated for EKEvent. The hierarchy has changed and a new abstract superclass has been added: EKCalendarItem.
回答3:
have you tried calling addAlarm using a variable?
EKAlarm *alarm = [EKAlarm alarmWithRelativeOffset:60.0f * -5.0f]]; // 5 min
[event addAlarm:alarm];
EKAlarm *alarm2 = [EKAlarm alarmWithRelativeOffset:60.0f * -15.0f]]; // 15 min
[event addAlarm:alarm2];
回答4:
I had the same error.
The problem seems that startDate shoudln't be the same as endDate... really silly iOS change!
来源：https://stackoverflow.com/questions/7844402/eventkit-app-freezes-when-adding-an-ekevent-with-2-alarms-ios-5