Repeating local notification is triggered immediately -- how to defer? - ios

Question

My goal is to set a notification that will occur N seconds in the future for the first time, and then repeat every N seconds.
However, creating a repeating notification seems to trigger the UNUserNotificationCenterDelegate immediately.
App delegate:
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
let center = UNUserNotificationCenter.current()
center.delegate = self
return true
}
func startRequest() {
let content = UNMutableNotificationContent()
content.body = bodyText
content.categoryIdentifier = categoryIdentifier
content.sound = UNNotificationSound.default()
let trigger = UNTimeIntervalNotificationTrigger(timeInterval: 60, repeats: true)
trigger.nextTriggerDate()
let request = UNNotificationRequest(identifier: UUID().uuidString, content: content, trigger: trigger)
let center = UNUserNotificationCenter.current()
center.add(request)
}
func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: #escaping (UNNotificationPresentationOptions) -> Void) {
// This callback received right after the request is made
completionHandler([.alert, .sound])
}
I can work around this by creating a non-repeating notification and then starting repeating notifications when it expires. However, I was hoping there was some way to specify a first trigger date -- if memory serves right, the old notification API had this ability, and perhaps I am misunderstanding this new API
Thanks!

Answer 1

The issue may be that you aren't setting the title on the UNMutableNotificationContent().
content.title = "Title goes Here"
Also, to see if there is an error adding the request, you can add the following code.
center.add(request) { (error : Error?) in
if let theError = error {
// Handle any errors
}
}
I got this from Apple's docs - https://developer.apple.com/reference/usernotifications/unmutablenotificationcontent