The following snippet of code provides how to display a locations to the user. In order to display the notification first of all you are required to request the user permissions to send your local notification.

user_local_notifications.swift

        // request for user permisstions
        UNUserNotificationCenter.current().requestAuthorization(options: [UNAuthorizationOptions.badge, UNAuthorizationOptions.sound, UNAuthorizationOptions.alert]) { (yes, error) in
            
        }

        // fill up with the following objects
        let context = UNMutableNotificationContent()
        context.badge = NSNumber(integerLiteral: UIApplication.shared.applicationIconBadgeNumber + 1)
        context.title = "It is Gym time now"
        context.body = "Now you have to wake up and go to Gym."
        context.launchImageName = "icon"
        
        //UNTimeIntervalNotificationTrigger, UNCalendarNotificationTrigger, UNLocationNotificationTrigger
        let trigger = UNTimeIntervalNotificationTrigger(timeInterval: 5, repeats: false)
        let localNotification = UNNotificationRequest(identifier: "alarm_notificatio_id", content: context, trigger: trigger)
        
        // finally add your notification to the center
        UNUserNotificationCenter.current().add(localNotification) { (error) in
            print(error as Any)
        }