A trigger condition that causes a notification to be delivered at a specific date and time.
Mac Catalyst 13.0+Beta
Create a UNCalendarNotificationTrigger object when you want to schedule the delivery of a local notification at the specified date and time. You specify the temporal information using an NSDateComponents object, which lets you specify only the time values that matter to you. The system uses the provided information to determine the next date and time that matches the specified information.
Listing 1 creates a trigger that delivers its notification every morning at 8:30. The repeating behavior is achieved by specifying true for the repeats parameter when creating the trigger.
The common behavior for subclasses that trigger the delivery of a local or remote notification.
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