Xcode Swift:当用户在后台收到本地通知时如何播放音频

<key>UIBackgroundModes</key>
<array>
    <string>audio</string>
</array>

func application(_ application: UIApplication, didReceive notification: UILocalNotification) {
    if let soundName = notification.soundName {
        let soundURL = Bundle.main.url(forResource: soundName, withExtension: nil)
        do {
            let player = try AVAudioPlayer(contentsOf: soundURL!)
            player.prepareToPlay()
            player.play()
        } catch {
            print("Failed to play sound")
        }
    }
}

let notification = UILocalNotification()
notification.soundName = "sound.mp3"
// 其他通知设置...
UIApplication.shared.scheduleLocalNotification(notification)