Ios AVSpeechSynthesizer在使用一次后不工作

我正在使用AVSpeechSynthesizer来输出一些文本数据，这是我第一次使用它，但之后就没用了

我收到下面的消息

错误：-

AppName[859:101035][AXTTSCommon]启动音频队列alp失败！ 2018-10-26 18:06:53.253536+0530应用程序名[859:101035][AXTTSCommon] _BeginSpeaking:无法开始播放

下面我分享我的代码

 let synth = AVSpeechSynthesizer()

 fileprivate func speakText(voiceOutdata: String )
 {
    let utterance = AVSpeechUtterance(string: voiceOutdata)
    utterance.voice = AVSpeechSynthesisVoice(language: "en-US")
    synth.speak(utterance)
 }

请尝试以下代码：

let synthesizer = AVSpeechSynthesizer()
 fileprivate func speakText(voiceOutdata: String ){
    synthesizer.stopSpeakingAtBoundary(.Immediate)
    let utterance = AVSpeechUtterance(string: voiceOutdata)
    utterance.voice = AVSpeechSynthesisVoice(language: "en-US")
    synthesizer.speakUtterance(utterance)
}

---

您需要设置执行此类任务的

AVAudioSession

。这是我的工作代码。希望这有帮助

func speakText(voiceOutdata: String ) {
    do {
        try AVAudioSession.sharedInstance().setCategory(AVAudioSession.Category.playAndRecord, mode: .default, options: .defaultToSpeaker)
        try AVAudioSession.sharedInstance().setActive(true, options: .notifyOthersOnDeactivation)
    } catch {
        print("audioSession properties weren't set because of an error.")
    }

    let utterance = AVSpeechUtterance(string: voiceOutdata)
    utterance.voice = AVSpeechSynthesisVoice(language: "en-US")

    let synth = AVSpeechSynthesizer()
    synth.speak(utterance)

    defer {
        disableAVSession()
    }
}

private func disableAVSession() {
    do {
        try AVAudioSession.sharedInstance().setActive(false, options: .notifyOthersOnDeactivation)
    } catch {
        print("audioSession properties weren't disable.")
    }
}

这对我有用：

do {
    try AVAudioSession.sharedInstance().setCategory(AVAudioSession.Category.playAndRecord, mode: .default, options: .defaultToSpeaker)
    try AVAudioSession.sharedInstance().setActive(true, options: .notifyOthersOnDeactivation)
} catch {
    print("audioSession properties weren't set because of an error.")
}

---

对我来说，问题是我的

扬声器音量

已关闭，并且它也处于

振动模式

我尝试了此功能，但它不起作用。仍然得到相同的错误。我能在Objective-C中得到相同的代码吗？？？因为我也有同样的问题&我的代码在Objective-C中