android speechrecognizer如何配置

要配置Android SpeechRecognizer，您需要遵循以下步骤：

1. 添加权限：在AndroidManifest.xml文件中添加以下权限，以访问麦克风和其他必需的功能。

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

2. 检查运行时权限：确保在运行时请求录音权限。在您的Activity中添加以下代码：

private static final int REQUEST_RECORD_AUDIO_PERMISSION = 200;

private void requestRecordAudioPermission() {
    if (ContextCompat.checkSelfPermission(this, Manifest.permission.RECORD_AUDIO) != PackageManager.PERMISSION_GRANTED) {
        ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.RECORD_AUDIO}, REQUEST_RECORD_AUDIO_PERMISSION);
    } else {
        startSpeechRecognizer();
    }
}

@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
    if (requestCode == REQUEST_RECORD_AUDIO_PERMISSION) {
        if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
            startSpeechRecognizer();
        } else {
            Toast.makeText(this, "Permission denied. Could not use speech recognition.", Toast.LENGTH_SHORT).show();
        }
    }
}

在onCreate()方法中调用requestRecordAudioPermission()：

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

    requestRecordAudioPermission();
}

3. 初始化SpeechRecognizer：在您的Activity中添加以下代码以初始化SpeechRecognizer。

private SpeechRecognizer speechRecognizer;
private Intent speechRecognizerIntent;

private void startSpeechRecognizer() {
    speechRecognizer = SpeechRecognizer.createSpeechRecognizer(this);
    speechRecognizerIntent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
    speechRecognizerIntent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
    speechRecognizerIntent.putExtra(RecognizerIntent.EXTRA_LANGUAGE, "en-US");
    speechRecognizerIntent.putExtra(RecognizerIntent.EXTRA_PARTIAL_RESULTS, true);
}

4. 设置监听器：创建一个实现SpeechRecognizer.OnResultsListener接口的类，并在其中处理识别结果。

private class SpeechRecognizerListener implements SpeechRecognizer.OnResultsListener {
    @Override
    public void onResults(Bundle results) {
        ArrayList<String> matches = results.getStringArrayList(SpeechRecognizer.RESULTS_RECOGNITION);
        if (matches != null && !matches.isEmpty()) {
            String recognizedText = matches.get(0);
            Toast.makeText(MainActivity.this, "Recognized: " + recognizedText, Toast.LENGTH_SHORT).show();
        }
    }

    @Override
    public void onError(int error) {
        Toast.makeText(MainActivity.this, "Error: " + error, Toast.LENGTH_SHORT).show();
    }
}

5. 开始识别：在startSpeechRecognizer()方法中添加以下代码以开始识别。

speechRecognizer.setRecognitionListener(new SpeechRecognizerListener());
speechRecognizer.startListening(speechRecognizerIntent);

现在，您已经配置了Android SpeechRecognizer。当用户说话时，它将识别并显示所说的内容。