A trigger condition that causes a notification to be delivered after the specified amount of time elapses.


class UNTimeIntervalNotificationTrigger : UNNotificationTrigger


Create a UNTimeIntervalNotificationTrigger object when you want to schedule the delivery of a local notification after the specified number of seconds elapse. You use this type of trigger to implement timers.

Listing 1 creates a trigger that delivers its notification one time after thirty minutes have elapsed.

Listing 1

Creating a trigger that fires in 30 minutes

// Fire in 30 minutes (60 seconds times 30)
let trigger = UNTimeIntervalNotificationTrigger(timeInterval: (30*60), repeats: false)


Creating a Time Interval Trigger

init(timeInterval: TimeInterval, repeats: Bool)

Creates a time interval trigger from the specified time value.

Getting the Trigger Information

func nextTriggerDate() -> Date?

The next date at which the trigger conditions will be met.

var timeInterval: TimeInterval

The time interval used to create the trigger.


Conforms To

See Also


class UNCalendarNotificationTrigger

A trigger condition that causes a notification to be delivered at a specific date and time.

class UNLocationNotificationTrigger

A trigger condition that causes a notification to be delivered when the user's device enters or exits the specified geographic region.

class UNPushNotificationTrigger

A trigger condition that indicates the notification was sent from Apple Push Notification Service (APNs).

class UNNotificationTrigger

The common behavior for subclasses that trigger the delivery of a local or remote notification.

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