Tengo un proyecto usando RecognitionListener escrito en Kotlin. La función de voz a texto siempre fue un éxito y nunca presentó ningún problema.
Desde la semana pasada, su función onResult comenzó a llamarse dos veces. No se hicieron cambios en el proyecto. Probé versiones antiguas del proyecto (hace meses) y esas tenían el mismo problema.
Hay tres casos diferentes:
- Texto pequeño (1 a 8 palabras) y SpeechRecognizer se detiene automáticamente -> onResult () llamado dos veces;
- Texto grande (9 palabras o más) y SpeechRecognizer se detiene automáticamente -> Comportamiento normal (onResult () llamado una vez);
- Cualquier tamaño de texto y función SpeechRecognizer stopListening () llamada manualmente (desde el código) -> Comportamiento normal.
Aquí está el código de clase de voz a texto VoiceRecognition:
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 () y cancelListening () se invocan desde un botón.