Swift UNUserNotification does not trigger sound - ios

Question

This is my code for UNUserNotification
func scheduleNotification() {
UNUserNotificationCenter.current().getNotificationSettings { (notificationSettings) in
switch notificationSettings.authorizationStatus {
case .notDetermined:
self.requestAuthorization(completionHandler: { (success) in
guard success else { return }
// Schedule Local Notification
self.scheduleLocalNotification()
})
case .authorized:
// Schedule Local Notification
self.scheduleLocalNotification()
case .denied:
print("Application Not Allowed to Display Notifications")
}
}
}
private func scheduleLocalNotification() {
// Create Notification Content
let notificationContent = UNMutableNotificationContent()
// Configure Notification Content
notificationContent.title = "Hello"
notificationContent.body = ""
// Add Trigger
let notificationTrigger = UNTimeIntervalNotificationTrigger(timeInterval: 10.0, repeats: false)
// Create Notification Request
let notificationRequest = UNNotificationRequest(identifier: id, content: notificationContent, trigger: notificationTrigger)
// Add Request to User Notification Center
UNUserNotificationCenter.current().add(notificationRequest) { (error) in
if let error = error {
print("Unable to Add Notification Request (\(error), \(error.localizedDescription))")
}
}
}
private func requestAuthorization(completionHandler: #escaping (_ success: Bool) -> ()) {
// Request Authorization
UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .sound, .badge]) { (success, error) in
if let error = error {
print("Request Authorization Failed (\(error), \(error.localizedDescription))")
}
completionHandler(success)
}
}
It schedules the notification 10 seconds after the call and it works, the notification is presented on the lock screen, the problem is that it does not trigger any sound/vibration.
Upon request I'm setting these options [.alert, .sound, .badge], what am I missing?
p.s. I am not willing to set a custom sound, the default one is enough

Answer 1

You are missing the critical element that will play the sound:
notificationContent.sound = UNNotificationSound.default()
Including UNMutableNotificationContent should solve your issue.