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iosswiftnotificationsuilocalnotificationlocalnotification

Repeating Local Notifications every Week with Swift

I have an app using local notifications there is a total of 64 notifications, which is the limit of local notifications. I need to repeat each notification every week. I know that to set the repeat interval you use:

alarm.repeatInterval = NSCalendarUnit

I have tried using the .WeekOfYear and .WeekOfMonth. Do they repeat the notification every year or month? And I do not know the calendar unit for weekly. Which one can I use to repeat weekly?

Edit:

This is the code I am using to set the notifications. 

let notifyAlarm = UILocalNotification()
let component = NSDateComponents()
component.hour = NSUserDefaults.standardUserDefaults().integerForKey("Hour1")
component.minute = NSUserDefaults.standardUserDefaults().integerForKey("Minute1")
component.weekday = 1

notifyAlarm.fireDate = calendar.dateFromComponents(component)
notifyAlarm.timeZone = NSTimeZone.defaultTimeZone()
notifyAlarm.alertBody = NSUserDefaults.standardUserDefaults().stringForKey("Message1")
notifyAlarm.repeatInterval = NSCalendarUnit.WeekdayOrdinal
notifyAlarm.soundName = NSUserDefaults.standardUserDefaults().stringForKey("Sound1")
app.scheduleLocalNotification(notifyAlarm)

I am setting 64 notifications like that at once. But with different dates.

Solution

  • If you want the notification to fire for first time after a week you need to change the fire date. I use TimeIntervalSinceNow for this, which is in seconds, so 1 week would be around 604000 seconds. You can use _ to separate numbers for legibility. 

    alarm.fireDate = NSDate(timeIntervalSinceNow: 604_000)

    Maybe a bit clunky but I think its the easiest for those type of notifications. I do something like this to make it easier.

    struct NotificationFireDate {
    static let nextDay: NSTimeInterval = 85_000
    static let nextWeek: NSTimeInterval = 604_000
}

    and than use it like so

    alarm.fireDate = NSDate(timeIntervalSinceNow: NotificationFireDate.nextWeek)

    Repeat interval should be weekOfYear

    alarm.repeatInterval = NSCalendarUnit.WeekOfYear

    The first repeating notification should fire 1 week after the first (fireDate) notification fired.

    For a full list have a look at this (thanks madmik3)

    https://developer.apple.com/library/mac/documentation/Cocoa/Reference/Foundation/Classes/NSCalendar_Class/#//apple_ref/c/tdef/NSCalendarUnit