Local Notification content going into a loop in iOS - ios

Question

I'm trying to implement local notifications within my app. The idea is that the user is sent a notification every day at 9:00 a.m. with a different quote, but I encountered a bug where the same content of the notification is always shown, i.e. the same quote is repeated endlessly. How could I fix it? This is the code I'm using, and I tried to use a UUID for every notification that is sent, but it didn't bring improvements.
let notificationCenter = UNUserNotificationCenter.current()
let options: UNAuthorizationOptions = [.alert, .sound]
notificationCenter.requestAuthorization(options: options) {
(didAllow, error) in
if !didAllow {
print("User has declined notifications")
}
}
notificationCenter.getNotificationSettings { (settings) in
if settings.authorizationStatus != .authorized {
print("Notifications not allowed")
}
}
let randomArrayNotificationQuote = Int(arc4random_uniform(UInt32(myQuotes.count)))
let randomArrayNotificationTitle = Int(arc4random_uniform(UInt32(myTitle.count)))
let content = UNMutableNotificationContent()
content.title = "\(myTitle[randomArrayNotificationTitle])"
content.body = "\(myQuotes[randomArrayNotificationQuote])"
content.sound = UNNotificationSound.default
content.categoryIdentifier = "com.giovannifilippini.philo"
// Deliver the notification
var dateComponents = DateComponents()
dateComponents.hour = 9
dateComponents.minute = 00
let trigger = UNCalendarNotificationTrigger(dateMatching: dateComponents, repeats: true)
let uuid = UUID().uuidString
let request = UNNotificationRequest.init(identifier: uuid, content: content, trigger: trigger)
notificationCenter.add(request) { (error) in
if error != nil {
print("add NotificationRequest succeeded!")
notificationCenter.removePendingNotificationRequests(withIdentifiers: [uuid])
}
}

Answer 1

The issue here is the trigger has the repeats set to true
let trigger = UNCalendarNotificationTrigger(dateMatching: dateComponents, repeats: true)
You would need to set it to false and re run this method every time you want to schedule different notification (different content)
In order to receive the Notification while the app is in the foreground you need to implement the willPresent method from the UNUserNotificationCenterDelegate
Here is a simple example:
class ViewController: UIViewController {
private let userNotificaionCenter = UNUserNotificationCenter.current()
override func viewDidLoad() {
super.viewDidLoad()
// 1. Assign the delegate
userNotificaionCenter.delegate = self
scheduleNotification()
}
func scheduleNotification() {
// Same notification logic that you have
}
}
// 2. Implement the UNUserNotificationCenterDelegate
extension ViewController: UNUserNotificationCenterDelegate {
func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: #escaping (UNNotificationPresentationOptions) -> Void) {
// This will allow the app to receive alerts and sound while in the foreground
completionHandler([.alert, .sound])
}
}