从请求中检索UNNotificationRequest声音名称

问题描述

我设置了具有自定义声音的通知，如下所示：

var soundNames = ["Default","Alert1","Alert2","Alert3","Alert4","Alert5","Alert6","Alert7","Alert8","Alert9","Alert10"]

func addNotification(title: String,timeInt: TimeInterval,image: Data?,soundName: String?) {

let content = UNMutableNotificationContent()
content.title = title

    content.sound = UNNotificationSound(named: UNNotificationSoundName(rawValue: "\(soundName!).caf"))

    var trigger: UNTimeIntervalNotificationTrigger

    trigger = UNTimeIntervalNotificationTrigger(timeInterval: timeInt,repeats: true)

// choose a random identifier
let request = UNNotificationRequest(identifier: UUID().uuidString,content: content,trigger: trigger)

// add our notification request
UNUserNotificationCenter.current().add(request)

saveConceptCard(id: request.identifier,title: title,image: image)

}

现在，我想获取从ID检索特定通知请求时使用的自定义声音的名称

 var notification: UNNotificationRequest

我尝试这样获得声音名称：

 let sound = notification.content.sound!.debugDescription

但这返回：

 <UNNotificationSound: 0x2822419d0>

有没有办法从该代码获取文件名？

解决方法

您必须使用AVFoundation框架将文本转换为语音

当您推送通知时，您还必须推送AVSpeechSynthesizer

设置方法如下：

let utterance = AVSpeechUtterance(string: "Hello world")
utterance.voice = AVSpeechSynthesisVoice(language: "en-GB")
utterance.rate = 0.1 

let synthesizer = AVSpeechSynthesizer()

以下是语音操作：

synthesizer.speak(utterance)