Swift: Converting Local Notification to User Notification IOS 10 - ios

Question

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.

Answer 1

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.