android原生持续检测麦克风并语音转文字代码示例

以下是一个Android原生持续检测麦克风并语音转文字的代码示例：

1. 在Manifest文件中添加麦克风权限：

<uses-permission android:name="android.permission.RECORD_AUDIO" />

2. 在MainActivity中创建SpeechRecognizer对象，并实现RecognitionListener接口：

public class MainActivity extends AppCompatActivity implements RecognitionListener {

    private SpeechRecognizer speechRecognizer;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        speechRecognizer = SpeechRecognizer.createSpeechRecognizer(this);
        speechRecognizer.setRecognitionListener(this);
    }

    @Override
    public void onReadyForSpeech(Bundle params) {
        Log.d("Speech", "Ready for speech");
    }

    @Override
    public void onBeginningOfSpeech() {
        Log.d("Speech", "Beginning of speech");
    }

    @Override
    public void onRmsChanged(float rmsdB) {
        Log.d("Speech", "RMS changed");
    }

    @Override
    public void onBufferReceived(byte[] buffer) {
        Log.d("Speech", "Buffer received");
    }

    @Override
    public void onEndOfSpeech() {
        Log.d("Speech", "End of speech");
    }

    @Override
    public void onError(int error) {
        Log.d("Speech", "Error: " + error);
    }

    @Override
    public void onResults(Bundle results) {
        Log.d("Speech", "Results received");
        ArrayList<String> matches = results.getStringArrayList(SpeechRecognizer.RESULTS_RECOGNITION);
        if (matches != null && matches.size() > 0) {
            String text = matches.get(0);
            Log.d("Speech", "Text: " + text);
        }
    }

    @Override
    public void onPartialResults(Bundle partialResults) {
        Log.d("Speech", "Partial results received");
        ArrayList<String> matches = partialResults.getStringArrayList(SpeechRecognizer.RESULTS_RECOGNITION);
        if (matches != null && matches.size() > 0) {
            String text = matches.get(0);
            Log.d("Speech", "Partial text: " + text);
        }
    }

    @Override
    public void onEvent(int eventType, Bundle params) {
        Log.d("Speech", "Event: " + eventType);
    }
}

3. 在需要开始检测麦克风的地方调用startListening方法：

Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
speechRecognizer.startListening(intent);

这将启动语音识别，并在检测到语音时调用RecognitionListener接口中的方法。

4. 在需要停止检测麦克风的地方调用stopListening方法：

speechRecognizer.stopListening();

这将停止语音识别，并停止调用RecognitionListener接口中的方法。

注意：以上代码仅为示例，实际应用中需要根据需求进行修改和调整。