Custom notifications delegate class for iOS development.

CustomNotifications.swift

import Foundation
import UserNotifications

class CustomNotificationDelegate: NSObject, UNUserNotificationCenterDelegate {
    func userNotificationCenter(_ center: UNUserNotificationCenter,
                                willPresent notification: UNNotification,
                                withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {
        
        //Play sound, show alert (will occur if enabled by user AND scheduled in the notification request).
        completionHandler([.alert, .sound])
    }
    
    func userNotificationCenter(_ center: UNUserNotificationCenter,
                                didReceive response: UNNotificationResponse,
                                withCompletionHandler completionHandler: @escaping () -> Void) {
        //Note that any categories you may wish to use will need to be handled in the completionHandler.
        completionHandler()
    }
}