Postpone local notification in iOS 10 - ios

Question

I have a local notification and I added an action to it. How should I do so that when the action is tapped, the local notification is fired again after 15 minutes?
Here is the code and the extension so that the notification can be showed using an UIImage:
extension UNNotificationAttachment {
static func create(identifier: String, image: UIImage, options: [NSObject : AnyObject]?) -> UNNotificationAttachment? {
let fileManager = FileManager.default
let tmpSubFolderName = ProcessInfo.processInfo.globallyUniqueString
let tmpSubFolderURL = URL(fileURLWithPath: NSTemporaryDirectory()).appendingPathComponent(tmpSubFolderName, isDirectory: true)
do {
try fileManager.createDirectory(at: tmpSubFolderURL, withIntermediateDirectories: true, attributes: nil)
let imageFileIdentifier = identifier+".png"
let fileURL = tmpSubFolderURL.appendingPathComponent(imageFileIdentifier)
guard let imageData = UIImagePNGRepresentation(image) else {
return nil
}
try imageData.write(to: fileURL)
let imageAttachment = try UNNotificationAttachment.init(identifier: imageFileIdentifier, url: fileURL, options: options)
return imageAttachment
} catch {
print("error " + error.localizedDescription)
}
return nil
}
}
func scheduleNotification() {
removeNotification()
if shouldRemind && dueDate > Date() {
let content = UNMutableNotificationContent()
content.title = "Reminder:"
content.body = text
content.sound = UNNotificationSound.default()
let calendar = Calendar(identifier: .gregorian)
let components = calendar.dateComponents([.month, .day, .hour, .minute], from: dueDate)
let trigger = UNCalendarNotificationTrigger(dateMatching: components, repeats: false)
let identifier = ProcessInfo.processInfo.globallyUniqueString
if let attachment = UNNotificationAttachment.create(identifier: identifier, image: notificationImage, options: nil) {
content.attachments = [attachment]
}
let action = UNNotificationAction(identifier: "remindLater", title: "Remind me later", options: [])
let category = UNNotificationCategory(identifier: "category", actions: [action], intentIdentifiers: [], options: [])
UNUserNotificationCenter.current().setNotificationCategories([category])
content.categoryIdentifier = "category"
let request = UNNotificationRequest(identifier: "\(itemID)", content: content, trigger: trigger)
let center = UNUserNotificationCenter.current()
center.add(request)
}
}

Answer 1

Just call a modified version scheduleNotification again in the action handler when the user activates the action. I would definitely create a function variable as a TimeInterval or a boolean which determines the trigger time of the notification.