iOS 10 UserNotifications custom sound in background mode

user_1984675 0
Viewed 22790

Since UILocalNotification is deprecated in iOS 10 so I have updated my local notification flow using the UNUserNotification framework.

The app plays custom sound using AVPlayer when the app is in the foreground and it works fine. But in background mode when local notification is triggered, instead of custom sound, a default notification sound is being played.

However, things were working fine in iOS9, using "didReceiveLocalNotification" method app can play custom sound even in background mode.

Update 1:

I'm setting local notification as follows:

let content = UNMutableNotificationContent()
content.title = NSString.localizedUserNotificationStringForKey("reminder!", arguments: nil)
content.body = NSString.localizedUserNotificationStringForKey("Reminder body.", arguments: nil)
if let audioUrl == nil {
    content.sound = UNNotificationSound.defaultSound()
} else {
    let alertSound = NSURL(fileURLWithPath: self.selectedAudioFilePath)
    content.sound = UNNotificationSound(named: alertSound.lastPathComponent!)
}
content.userInfo = infoDic as [NSObject : AnyObject]
content.badge = 1
let trigger = UNTimeIntervalNotificationTrigger(timeInterval: 60, repeats: false)
let identifier = "Reminder-\(date)"
let request = UNNotificationRequest(identifier: identifier, content: content, trigger: trigger)
let center = UNUserNotificationCenter.currentNotificationCenter()
center.addNotificationRequest(request, withCompletionHandler: { (error) in
    if error != nil {
        print("local notification created successfully.")
    }
})

I have already gone through many SO Questions but didn't get the solution.

Any help will be greatly appreciated!

ios10 unusernotificationcenter uilocalnotification swift ios
6 Answers

In Swift 4.2 and Xcode 10.1

For local notifications to play sound

let content = UNMutableNotificationContent()
content.title = "Notification Tutorial"
content.subtitle = "from ioscreator.com"
content.body = " Notification triggered"
//Default sound
content.sound = UNNotificationSound.default
//Play custom sound
content.sound = UNNotificationSound(named:UNNotificationSoundName(rawValue: "123.mp3"))

"123.mp3" file needs to be in your Bundle.

user_80908930

I understand that 

let notificationContent = UNMutableNotificationContent()

...

notificationContent.sound = UNNotificationSound(named: "out.mp3")

is working fine, but:

1) the sound file should not be longer than 30 sec (which is ok, I think)

2) the sound file has to be part of the Bundle.mail files. If it is stored somewhere else the notification will not have access to it, when in background. It works fine in foreground. Apple does not provide permission to access other folders as far as I know.

3) there are restrictions on the sound format. Please refer to Apple guides

4) I'm not sure if sound files in Bundle.main can be changed programmatically. For example: I wrote a routine which extracts 30 sec of a song stored in apple music and chosen by the user... everything works fine, if the info is stored in a different directory, but only in foreground... once locked or in background there is no access to it. I'm not able to change/overwrite a file in Bundle.main. If that would be possible the problem would be solved ... but I think that would be a security issue. I conclude that alert sounds and music are working fine as long as the above is met.

user_96766890 
let notificationContent1 = UNMutableNotificationContent()
        notificationContent1.title = "Good morning! Would you like to listen to a morning meditation to start the day fresh ? Or maybe a cool relaxing soundscape? Open the app and browse our collection which is updated daily."
        notificationContent1.subtitle = ""
        notificationContent1.body = ""
        notificationContent1.sound = UNNotificationSound(named: UNNotificationSoundName(rawValue: "AlarmSound.wav"))

        var dateComponents1 = DateComponents()
        dateComponents1.hour = 08
        dateComponents1.minute = 00

        let trigger1 = UNCalendarNotificationTrigger(dateMatching: dateComponents1, repeats: true)

        let request1 = UNNotificationRequest(
            identifier: UUID().uuidString,
            content: notificationContent1,
            trigger: trigger1
        )

        let notificationContent2 = UNMutableNotificationContent()
        notificationContent2.title = "Good evening! Hope you had a great day. Would you like to meditate on a particular topic ? Or just some relaxing sleep sounds ? Open the app and pick what you want so you can go to sleep relaxed."
        notificationContent2.subtitle = ""
        notificationContent2.body = ""
        notificationContent2.sound = UNNotificationSound(named: UNNotificationSoundName(rawValue: "AlarmSound.wav"))

        var dateComponents2 = DateComponents()
        dateComponents2.hour = 20
        dateComponents2.minute = 00

        let trigger2 = UNCalendarNotificationTrigger(dateMatching: dateComponents2, repeats: true)

        let request2 = UNNotificationRequest(
            identifier: UUID().uuidString,
            content: notificationContent2,
            trigger: trigger2
        )

        UNUserNotificationCenter.current().delegate = self
        UNUserNotificationCenter.current().add(request1, withCompletionHandler: nil)
        UNUserNotificationCenter.current().add(request2, withCompletionHandler: nil)
user_108391370
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