Code for UserNotificationDelegate

UserNotificationDelegate.swift

class UserNotificationAppDelegate: NSObject, UIApplicationDelegate {
    
    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]? = nil) -> Bool {
        
        // check if app lauched via notification
        return true
    }
    
    func applicationWillTerminate(_ application: UIApplication) {
        // schedule a local notification
    }
    
    func application(_ application: UIApplication, didRegister notificationSettings: UIUserNotificationSettings) {
        // some code
    }
    
    func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable : Any]) {
        // handle remote notification
    }
    
    func application(_ application: UIApplication, didReceive notification: UILocalNotification) {
        // handle local notification
    }
}