Example July 17

17072020-original.swift

func requestAuthorization(completion: ((Bool, Error?) -> Void)? = nil) {
        
        // enable local notifications (alarms in background)
        let authorizationOptions: UNAuthorizationOptions
        if #available(iOS 12.0, *) {
            authorizationOptions = [.badge, .alert, .sound, .criticalAlert]
        } else {
            authorizationOptions = [.badge, .alert, .sound]
        }
        
        UNUserNotificationCenter.current().requestAuthorization(options: authorizationOptions) { (granted, error) in
            // Enable or disable features based on authorization.
                dispatchOnMain {
                    completion?(granted, error)
                }
        }
    }