我希望在我的Android应用程序中加入永久语音识别功能。
我知道在Android 4.1.1和4.2上，语音识别会不时地出现卡顿的问题，因此我设置了一个计时器，定期检查语音识别是否还在运行。如果它没有运行，我就停止它并重新启动。但是，不幸的是，在某个时候当它尝试重新启动语音识别器时，会出现类似这样的问题：
在 onError 回调函数中，我收到错误代码 8（文档称为：ERROR_RECOGNIZER_BUSY），尽管在启动语音识别器之前我停止了所有计时器。
代码如下：
我知道在Android 4.1.1和4.2上，语音识别会不时地出现卡顿的问题，因此我设置了一个计时器，定期检查语音识别是否还在运行。如果它没有运行，我就停止它并重新启动。但是，不幸的是，在某个时候当它尝试重新启动语音识别器时，会出现类似这样的问题：
SpeechRecognizer not connected to the recognition service
在 onError 回调函数中，我收到错误代码 8（文档称为：ERROR_RECOGNIZER_BUSY），尽管在启动语音识别器之前我停止了所有计时器。
代码如下：
public class MainActivity extends Activity {
private SpeechRecognizer mSpeechRecognizer;
private RecognitionListener mRecognitionListener;
private Intent mi;
private boolean isSpeechRecognizerAlive;
Timer myTimer;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mi = new Intent(getApplicationContext(), MyService.class);
mRecognitionListener = new RecognitionListener(){
@Override
public void onRmsChanged(float rmsdB) {
}
@Override
public void onResults(Bundle results) {
Log.e("recognizer listener", "onResults");
ArrayList<String> result = results.getStringArrayList(SpeechRecognizer.RESULTS_RECOGNITION);
for(int i=0;i<result.size();i++){
Log.e(String.valueOf(i), result.get(i));
}
startRecognition(new View(getApplicationContext()));
}
@Override
public void onReadyForSpeech(Bundle params) {
Log.e("recognizer listener", "onReadyForSpeech");
}
@Override
public void onPartialResults(Bundle partialResults) {
Log.e("recognizer listener", "onPartialResults");
}
@Override
public void onEvent(int eventType, Bundle params) {
Log.e("recognizer listener", "onEvent");
}
@Override
public void onError(int error) {
Log.e("recognizer listener", "onError: " + String.valueOf(error));
isSpeechRecognizerAlive = false;
}
@Override
public void onEndOfSpeech() {
Log.e("recognizer listener", "onEndOfSpeech");
}
@Override
public void onBufferReceived(byte[] buffer) {
Log.e("recognizer listener", "onBufferReceived");
}
@Override
public void onBeginningOfSpeech() {
Log.e("recognizer listener", "onBeginningOfSpeech");
isSpeechRecognizerAlive = true;
}
};
new CheckRecognizer().execute("");
}
private void checkIfRecognizerAslive(){
Log.e("check", "check");
if(!isSpeechRecognizerAlive){
Log.e("check1", "check1");
stopRecognition(new View(getApplicationContext()));
startRecognition(new View(getApplicationContext()));
}
}
@Override
protected void onResume() {
super.onResume();
Log.e("Start", "service");
}
@Override
protected void onPause() {
super.onPause();
Log.e("Stop", "service");
}
public void startRecognition(View view){
Log.e("MainActivity", "startRecognition");
isSpeechRecognizerAlive = false;
mSpeechRecognizer = SpeechRecognizer.createSpeechRecognizer(getApplicationContext());
mSpeechRecognizer.setRecognitionListener(mRecognitionListener);
mSpeechRecognizer.startListening(new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH));
}
public void stopRecognition(View view){
Log.e("MainActivity", "stopRecognition");
if(mSpeechRecognizer != null){
mSpeechRecognizer.stopListening();
mSpeechRecognizer.cancel();
mSpeechRecognizer.destroy();
mSpeechRecognizer = null;
}
}
private class CheckRecognizer extends AsyncTask<String, Void, String> {
@Override
protected String doInBackground(String... params) {
myTimer = new Timer();
myTimer.schedule(new TimerTask() {
@Override
public void run() {
publishProgress();
}
}, 0, 4000);
return "";
}
@Override
protected void onPostExecute(String result) {
}
@Override
protected void onPreExecute() {}
@Override
protected void onProgressUpdate(Void... values) {
checkIfRecognizerAslive();
}
}
我真的不知道我做错了什么。你能帮我找出问题吗？或者有人知道为什么即使我销毁了语音识别器，它仍然忙碌吗？欢迎任何建议。如果您对如何在Android上进行永久语音识别有其他建议，那将是非常好的。非常感谢！