UserNotification in 3 days then repeat every day/hour - iOS 10

Question

UILocalNotification has been depreciated so I would like to update my code to the UserNotification framework:

let alertDays = 3.0
let alertSeconds = alertDay         


        

Answer 1

It seems like this is not supported, but to make a workaround you could use:

let alertDays = 3.0
let daySeconds = 86400
let alertSeconds = alertDays * daySeconds

let content: UNMutableNotificationContent = UNMutableNotificationContent()

content.title = "Reminder Title"
content.subtitle = "Reminder Subtitle"
content.body = "Reminder Message"

let trigger = UNTimeIntervalNotificationTrigger.init(timeInterval: (alertSeconds), repeats: false)

let request = UNNotificationRequest(identifier: workoutAlarmIdentifier,
                                    content: content,
                                    trigger: trigger)

UNUserNotificationCenter.current().add(request)
{
    (error) in // ...
}

in combination with didReceive(_:withContentHandler:) you can use:

let trigger = UNTimeIntervalNotificationTrigger.init(timeInterval: (daySeconds), repeats: false)

I know this isn't optimal but it should work without using deprecated classes/methods. You use repeats: false since you are intercepting the notification just before the user receives it and creating a new notification. Additionally you can use it in combination with UNNotificationAction and UNNotificationCategory if you handle multiple notifications.

Answer 2

This should work:

func addNotificationForAlarm(alarm: MyAlarm) {

    let myAlarmNotifContent = UNMutableNotificationContent()
    myAlarmNotifContent.title = "Reminder"
    myAlarmNotifContent.body = alarm.activity
    myAlarmNotifContent.sound = UNNotificationSound.default()

    if alarm.repeatDays.count == 1 {

    } else {

        for index in 1...alarm.repeatDays.count {
            createNotif(date: alarm.date, weekDay: index, content: myAlarmNotifContent)
        }
    }

}

private func createNotif(date: Date, weekDay: Int, content: UNNotificationContent) {

    var dateComponent = DateComponents()
    dateComponent.weekday = weekDay
    dateComponent.hour = Calendar.current.dateComponents([.hour], from: date).hashValue
    dateComponent.minute = Calendar.current.dateComponents([.minute], from: date).hashValue

    let myAlarmTrigger = UNCalendarNotificationTrigger(dateMatching: dateComponent, repeats: true)

    setupNotificationSettings()

    let identifier = "Your-Notification"
    let request = UNNotificationRequest(identifier: identifier, content: content, trigger: myAlarmTrigger)
    let center = UNUserNotificationCenter.current()
    center.add(request, withCompletionHandler: { (error) in
        if error != nil {
            //TODO: Handle the error
        }
    })
}