android - SpeechRecognizer 未启动

Question

简介

我需要在我的代码中实现语音识别。我按照这里的其他帖子和一些教程来获取它，但它不适合我。

方法

这是在 onCreate 中初始化它的代码:

Log.d("SPEECH", "speech recognition available: " + SpeechRecognizer.isRecognitionAvailable(this));
mSpeechRecognizer = SpeechRecognizer.createSpeechRecognizer(this);
mSpeechRecognizer.setRecognitionListener(mRecognitionListener);

mSpeechRecognizerIntent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
mSpeechRecognizerIntent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,
        RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
mSpeechRecognizerIntent.putExtra(RecognizerIntent.EXTRA_CALLING_PACKAGE,
        this.getPackageName());

该 Activity 实现了 TextToSpeech.OnInitListener，因此，当此实现在它自己的方法中初始化时，我调用主要方法:

@Override
public void onInit(int status) {
    myMethod();
}

然后，在 myMethod() 中，我像这样开始语音识别:

mSpeechRecognizer.startListening(mSpeechRecognizerIntent);

最后，这是结果的监听器:

private final RecognitionListener mRecognitionListener = new RecognitionListener() {
    @Override
    public void onBufferReceived(byte[] buffer) {
        Log.d("SPEECH", "onBufferReceived");
    }
    @Override
    public void onError(int error) {
        Log.d("SPEECH", "onError: " + error);

        mSpeechRecognizer.startListening(mSpeechRecognizerIntent);
    }
    @Override
    public void onEvent(int eventType, Bundle params) {
        Log.d("SPEECH", "onEvent");
    }
    @Override
    public void onPartialResults(Bundle partialResults) {
        Log.d("SPEECH", "onPartialResults");
    }
    @Override
    public void onReadyForSpeech(Bundle params) {
        Log.d("SPEECH", "onReadyForSpeech");
    }
    @Override
    public void onResults(Bundle results) {
        Log.d("SPEECH", "onResult");

        matches = results.getStringArrayList(SpeechRecognizer.RESULTS_RECOGNITION);
    }
    @Override
    public void onRmsChanged(float rmsdB) {
        Log.d("SPEECH", "onRmsChanged");
    }
    @Override
    public void onBeginningOfSpeech() {
        Log.d("SPEECH", "onBeginningOfSpeech");
    }
    @Override
    public void onEndOfSpeech() {
        Log.d("SPEECH", "onEndOfSpeech");
    }
};

当我执行 mSpeechRecognizer.startListening(mSpeechRecognizerIntent); 时，它在 logcat 中没有显示任何错误或任何错误，但监听器未初始化，我没有在LogCat，所以我认为它没有很好地初始化。

也许我没有很好地开始听众或者可能发生了什么？

更新-- Activity 结构

public class GameActivity extends Activity implements TextToSpeech.OnInitListener {

    @Override
    public void onCreate(Bundle savedInstanceState) {

        tts = new TextToSpeech(this, this);

        Log.d("SPEECH", "speech recognition available: " + SpeechRecognizer.isRecognitionAvailable(this));
        mSpeechRecognizer = SpeechRecognizer.createSpeechRecognizer(this);
        mSpeechRecognizer.setRecognitionListener(new SpeechListener());

        mSpeechRecognizerIntent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
        mSpeechRecognizerIntent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,
            RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
        mSpeechRecognizerIntent.putExtra(RecognizerIntent.EXTRA_CALLING_PACKAGE,
            this.getPackageName());

        mSpeechRecognizer.startListening(mSpeechRecognizerIntent);
    }

    /*Method implemented by texttospeech*/
    @Override
    public void onInit(int status) {

        if (status == TextToSpeech.SUCCESS) {
            /*set Language*/
            tts.setLanguage(Locale.getDefault());

            /*STARTS MAIN METHOD*/
            SpeechWhenMotion();
        } else {
            Log.e("TTS", "Initilization Failed");
        }
    }

    /*Main method, does all the work*/
    public void SpeechWhenMotion() {
    }

Answer 1

根据documentation语音识别器必须从主线程调用。您正在尝试从 TTS 引擎的 onInit 回调中启动识别器。这不是主线程，tts 引擎回调是在单独的线程中执行的。

您需要在主线程中运行ASR初始化程序，您可以先在onCreate()方法中初始化语音识别器，然后初始化文本到语音。

或者，您可以将处理程序发布到 TTS 线程中的初始化 ASR:

handler.postDelayed(new Runnable() {
   @Override
   run() {
      MyASRInit()
   }
}