要实现安卓语音识别后端,可以使用Android的SpeechRecognizer类。以下是一个基本的代码示例:
public class MySpeechRecognitionService extends RecognitionService {
private SpeechRecognizer speechRecognizer;
@Override
protected void onStartListening(Intent recognizerIntent, Callback listener) {
speechRecognizer = SpeechRecognizer.createSpeechRecognizer(this);
speechRecognizer.setRecognitionListener(new RecognitionListener() {
@Override
public void onReadyForSpeech(Bundle params) {
// 当准备好接收语音输入时调用
}
@Override
public void onBeginningOfSpeech() {
// 当开始说话时调用
}
@Override
public void onRmsChanged(float rmsdB) {
// 当音量变化时调用
}
@Override
public void onEndOfSpeech() {
// 当结束说话时调用
}
@Override
public void onPartialResults(Bundle partialResults) {
// 当部分识别结果可用时调用
}
@Override
public void onResults(Bundle results) {
// 当最终识别结果可用时调用
ArrayList matches = results.getStringArrayList(SpeechRecognizer.RESULTS_RECOGNITION);
if (matches != null && !matches.isEmpty()) {
String recognizedText = matches.get(0);
// 处理识别结果
}
}
@Override
public void onError(int error) {
// 当发生错误时调用
}
@Override
public void onEvent(int eventType, Bundle params) {
// 当有额外的事件需要报告时调用
}
});
speechRecognizer.startListening(recognizerIntent);
}
@Override
protected void onCancel(Callback listener) {
if (speechRecognizer != null) {
speechRecognizer.cancel();
speechRecognizer.destroy();
}
}
@Nullable
@Override
public IBinder onBind(Intent intent) {
return null;
}
}
private void startSpeechRecognition() {
Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE, Locale.getDefault());
// 设置自定义的RecognitionService
intent.setComponent(new ComponentName(this, MySpeechRecognitionService.class));
startService(intent);
}
private void stopSpeechRecognition() {
Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
intent.setComponent(new ComponentName(this, MySpeechRecognitionService.class));
stopService(intent);
}
这只是一个简单的示例,你可以根据自己的需求进行扩展和改进。同时,请确保在使用语音识别服务时处理好权限和错误处理。
上一篇:安卓语音识别更改返回语言
下一篇:安卓语音tts开源