Swift: Converting Local Notification to User Notification IOS 10

I have recently updated my project to IOS 10, which has caused any local notifications I had registered to not fire. I have tried to convert the local notification to user notifications but it is not having the same effect. Here is the original code I tried to convert. Within viewDidLoad:

        guard let settings = UIApplication.shared.currentUserNotificationSettings else { return
        }
        if settings.types == UIUserNotificationType() {
            let ac = UIAlertController(title: "Cant Schedule", message: "No Permission", preferredStyle: .alert)
            ac.addAction(UIAlertAction(title: "OK", style: .default, handler: nil))
            present(ac, animated: true, completion: nil)
            return
        }


        var dateComp: DateComponents = DateComponents()
        dateComp.year = 2017;
        dateComp.month = 01;
        dateComp.day = 28;
        dateComp.hour = 11;
        dateComp.minute = 0;
        (dateComp as NSDateComponents).timeZone = TimeZone.current

        let calender:Calendar = Calendar(identifier: Calendar.Identifier.gregorian)
        let date:Date = calender.date(from: dateComp)!


        let notification = UILocalNotification()
        notification.fireDate = date
        notification.alertBody = "Notification!"
        notification.alertAction = "You just Received a notification!"
        notification.soundName = UILocalNotificationDefaultSoundName
        notification.userInfo = ["customField1": "w00t"]
        notification.repeatInterval = NSCalendar.Unit.weekOfYear
        UIApplication.shared.scheduleLocalNotification(notification)

This caused a local notification to fire at 11:00 am every saturday.

Here is the code I used to try and achieve the same effect in IOS 10:

func scheduleNotification(at date: Date) {
let calendar = Calendar(identifier: .gregorian)
let components = calendar.dateComponents(in: .current, from: date)
let newComponents = DateComponents(calendar: calendar, timeZone: .current, month: components.month, day: components.day, hour: components.hour, minute: components.minute)

let trigger = UNCalendarNotificationTrigger(dateMatching: newComponents, repeats: true)

let content = UNMutableNotificationContent()
content.title = "Notification"
content.body = "You just Received a notification!"
content.sound = UNNotificationSound.default()

let request = UNNotificationRequest(identifier: "textNotification", content: content, trigger: trigger)


UNUserNotificationCenter.current().add(request) {(error) in
    if let error = error {
        print("Error")
    }
}
}

In viewDidLoad:

UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .sound]) {(accepted, error) in
    if !accepted {
        print("Error")
    }
}

This code works fine if the user selects the date using a datePicker, but I can't figure out how to programmatically set the date of the notification to the same date I had in the local notification (2017-28-01 11:00), and also how to make the notification fire every week at the same time as there is no repeatInterval property.

Could you explain how you could only specify for example Monday at 11:00 am

It's just a matter of leaving out everything that doesn't apply to the repeated value. Thus, in your case you want to specify the date components hour:11 and weekday:2 and nothing else.

To understand how this works, run this in a playground:

let dc = DateComponents(hour:11, weekday:2)
let greg = Calendar(identifier: .gregorian)
let d = greg.nextDate(after: Date(), matching: dc, matchingPolicy:.nextTime)

You will see that d is this coming Monday at 11AM.

That is exactly what UNNotificationTrigger will do to figure out when to send this notification.

Now, if you also set this to be a repeats trigger, you have just specified every Monday at 11AM.