Android RecognitionListener:onResults被调用两次


10

我有一个使用Kotlin编写的使用RecognitionListener的项目。语音到文本功能始终是成功的,从未出现任何问题。

从上周开始,它的onResult函数开始被调用两次。该项目未做任何更改。我测试了该项目的旧版本(从几个月前开始),这些版本都存在相同的问题。

有三种不同的情况:

  1. 小文本(1到8个单词)和SpeechRecognizer自动停止-> onResult()调用了两次;
  2. 大文本(9个单词或更多)和SpeechRecognizer自动停止->正常行为(onResult()调用一次);
  3. 手动调用任何文本大小和SpeechRecognizer stopListening()函数(从代码)->正常行为。

这是VoiceRecognition语音转文字类代码:

class VoiceRecognition(private val activity: Activity, language: String = "pt_BR") : RecognitionListener {

    private val AudioLogTag = "AudioInput"

    var voiceRecognitionIntentHandler: VoiceRecognitionIntentHandler? = null
    var voiceRecognitionOnResultListener: VoiceRecognitionOnResultListener? = null //Must have this
    var voiceRecognitionLayoutChanger: VoiceRecognitionLayoutChanger? = null

    var isListening = false

    private val intent: Intent
    private var speech: SpeechRecognizer = SpeechRecognizer.createSpeechRecognizer(activity)

    init {
        speech.setRecognitionListener(this)

        intent = Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH)
        intent.putExtra(
            RecognizerIntent.EXTRA_LANGUAGE_MODEL,
            RecognizerIntent.LANGUAGE_MODEL_FREE_FORM
        )
        intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE, language)
    }

    //It is important to put this function inside a clickListener
    fun listen(): Boolean {
        if (ContextCompat.checkSelfPermission(activity, Manifest.permission.RECORD_AUDIO) != PackageManager.PERMISSION_GRANTED) {
            ActivityCompat.requestPermissions(activity, arrayOf(Manifest.permission.RECORD_AUDIO), 1)
            return false
        }

        speech.startListening(intent)

        Log.i(AudioLogTag, "startListening")

        return true
    }

    //Use this if you want to stop listening but still get recognition results
    fun endListening(){
        Log.i(AudioLogTag, "stopListening")

        speech.stopListening()
        isListening = false
    }

    fun cancelListening(){
        Log.i(AudioLogTag, "cancelListening")

        speech.cancel()
        voiceRecognitionLayoutChanger?.endListeningChangeLayout()
        isListening = false
    }

    override fun onReadyForSpeech(p0: Bundle?) {
        Log.i(AudioLogTag, "onReadyForSpeech")

        voiceRecognitionLayoutChanger?.startListeningChangeLayout()
        isListening = true
    }

    override fun onRmsChanged(p0: Float) {
//        Log.i(AudioLogTag, "onRmsChanged: $p0")
//        progressBar.setProgress((Int) p0)
    }

    override fun onBufferReceived(p0: ByteArray?) {
        Log.i(AudioLogTag, "onBufferReceived: $p0")
    }

    override fun onPartialResults(p0: Bundle?) {
        Log.i(AudioLogTag, "onPartialResults")
    }

    override fun onEvent(p0: Int, p1: Bundle?) {
        Log.i(AudioLogTag, "onEvent")
    }

    override fun onBeginningOfSpeech() {
        Log.i(AudioLogTag, "onBeginningOfSpeech")
    }

    override fun onEndOfSpeech() {
        Log.i(AudioLogTag, "onEndOfSpeech")

        voiceRecognitionLayoutChanger?.endListeningChangeLayout()
        isListening = false
    }

    override fun onError(p0: Int) {
        speech.cancel()
        val errorMessage = getErrorText(p0)
        Log.d(AudioLogTag, "FAILED: $errorMessage")
        voiceRecognitionLayoutChanger?.endListeningChangeLayout()
        isListening = false
    }

    override fun onResults(p0: Bundle?) {

        val results: ArrayList<String> = p0?.getStringArrayList(SpeechRecognizer.RESULTS_RECOGNITION) as ArrayList<String>

        Log.i(AudioLogTag, "onResults -> ${results.size}")

        val voiceIntent: Int? = voiceRecognitionIntentHandler?.getIntent(results[0])
        if (voiceIntent != null && voiceIntent != 0) {
            voiceRecognitionIntentHandler?.handle(voiceIntent)
            return
        }

        voiceRecognitionOnResultListener!!.onResult(results[0])
    }

    private fun getErrorText(errorCode: Int): String {
        val message: String
        when (errorCode) {
            SpeechRecognizer.ERROR_AUDIO -> message = "Audio recording error"
            SpeechRecognizer.ERROR_CLIENT -> message = "Client side error"
            SpeechRecognizer.ERROR_INSUFFICIENT_PERMISSIONS -> message = "Insufficient permissions"
            SpeechRecognizer.ERROR_NETWORK -> message = "Network error"
            SpeechRecognizer.ERROR_NETWORK_TIMEOUT -> message = "Network timeout"
            SpeechRecognizer.ERROR_NO_MATCH -> message = "No match"
            SpeechRecognizer.ERROR_RECOGNIZER_BUSY -> message = "RecognitionService busy"
            SpeechRecognizer.ERROR_SERVER -> message = "Error from server"
            SpeechRecognizer.ERROR_SPEECH_TIMEOUT -> message = "No speech input"
            else -> message = "Didn't understand, please try again."
        }
        return message
    }

    //Use it in your overriden onPause function.
    fun onPause() {
        voiceRecognitionLayoutChanger?.endListeningChangeLayout()
        isListening = false

        speech.cancel()
        Log.i(AudioLogTag, "pause")
    }

    //Use it in your overriden onDestroy function.
    fun onDestroy() {
        speech.destroy()
    }

listen(),endListening()和cancelListening()都是通过按钮调用的。


我遇到了同样的问题,问题仅出现在具有api 9的Samsung s8上-在识别过程中,我还可以看到部分结果。在较旧的设备上,我没有遇到这种情况。
marcinj

我从Android 7及更高版本中看到了这个问题...我什至没有更改我的项目..它刚刚开始发生。
Pedro Henrique Flores

“问题仅出现在具有api 9的Samsung s8上” –在我所拥有的设备上进行测试时,我的意思是
marcinj

1
Pocophone F1上存在相同的问题,我的解决方案是检查结果是否相同,如果结果相同,则忽略第二个结果
Lotan

昨天,这只是在我的一个应用程序中开始发生的。我添加了一个布尔值以允许代码仅执行一次,但是我很乐意解释为什么它突然开始执行此操作。任何更新?
加文·赖特

Answers:



1

昨天,这只是在我的一个应用程序中开始发生的。我添加了一个布尔值以允许代码仅执行一次,但是我很乐意解释为什么它突然开始执行此操作。任何更新?


0

我遇到了同样的问题,我刚刚在代码中添加了一个布尔标志,但这当然是一个临时解决方案,我不知道这个问题的根源。

object : RecognitionListener {

        var singleResult = true

        override fun onResults(results: Bundle?) {
            if (singleResult) {
                results?.getStringArrayList(SpeechRecognizer.RESULTS_RECOGNITION).let {
                    // do something with result
                }
                // next result will be ignored
                singleResult = false
            }
        }
    }

请添加一些示例代码。
m02ph3u5
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