Trigger notification weekly Swift 3

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You can set your trigger to repeat every monday at 1:05am as follow: 

import UserNotifications

let trigger = UNCalendarNotificationTrigger(dateMatching: DateComponents(hour: 1, minute: 5, weekday: 2), repeats: true)
print(trigger.nextTriggerDate() ?? "nil")

let content = UNMutableNotificationContent()
content.title = "title"
content.body = "body"
// make sure you give each request a unique identifier. (nextTriggerDate description)
let request = UNNotificationRequest(identifier: "identify", content: content, trigger: trigger)
UNUserNotificationCenter.current().add(request) { error in
    if let error = error {
        print(error)
        return
    }
    print("scheduled")
}

Don’t forget to ask the user permission to schedule notifications before trying to schedule your notification:

UNUserNotificationCenter.current().requestAuthorization(options:[.badge, .alert, .sound]) { granted, error in
    if granted {
        print("authorized")
    }
}

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