我一直在寻找不同的线程，但没有找到任何对我遇到的问题有用的东西。我想摆脱语音识别开始时发出的“哔”声。我正在使用 Jelly Bean 4.2.2，所以我不确定早期版本是否存在同样的问题，如果是的话，我也想解决这个问题。另外，我想知道是否有人对如何响应某些语音识别结果有建议。请让我知道如何即兴编写我的代码以包含这些功能。
package com.example.speech;
import java.util.ArrayList;
import android.media.AudioManager;
import android.os.Build;
import android.os.Bundle;
import android.os.CountDownTimer;
import android.app.Activity;
import android.content.Intent;
import android.speech.RecognitionListener;
import android.speech.RecognizerIntent;
import android.speech.SpeechRecognizer;
import android.view.Menu;
import android.view.View.OnClickListener;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.util.Log;
public class MainActivity extends Activity implements OnClickListener {
ListView lv;
private SpeechRecognizer mSpeechRecognizer;
private Intent mSpeechRecognizerIntent;
boolean reseter = false;
private AudioManager mAudioManager;
private volatile boolean mNoSpeechCountDownOn;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
boolean available = SpeechRecognizer.isRecognitionAvailable(this);
Log.d("Speech", "available = " + available);
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());
mAudioManager = (AudioManager) getSystemService(this.AUDIO_SERVICE);
commandA();
}
private CountDownTimer mNoSpeechCountDown = new CountDownTimer(5000, 5000)
{
@Override
public void onTick(long millisUntilFinished)
{
}
@SuppressWarnings("synthetic-access")
@Override
public void onFinish()
{
mNoSpeechCountDownOn = false;
mSpeechRecognizer.cancel();
mSpeechRecognizer.startListening(mSpeechRecognizerIntent);
}
};
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
private class SpeechListener implements RecognitionListener {
@Override
public void onBeginningOfSpeech() {
if (mNoSpeechCountDownOn)
{
mNoSpeechCountDownOn = false;
mNoSpeechCountDown.cancel();
}
Log.d("Speech", "onBeginningOfSpeech");
}
@Override
public void onBufferReceived(byte[] buffer) {
Log.d("Speech", "onBufferReceived");
}
@Override
public void onEndOfSpeech() {
Log.d("Speech", "onEndOfSpeech");
}
@Override
public void onError(int error) {
if (mNoSpeechCountDownOn)
{
mNoSpeechCountDownOn = false;
mNoSpeechCountDown.cancel();
}
Log.d("Speech", "onError");
}
@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) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN)
{
mNoSpeechCountDownOn = true;
mNoSpeechCountDown.start();
mAudioManager.setStreamMute(AudioManager.STREAM_SYSTEM, false);
}
Log.d("Speech", "onReadyForSpeech");
try {
Thread.sleep(4900);
} catch (InterruptedException e) {
mSpeechRecognizer.startListening(mSpeechRecognizerIntent);
mAudioManager.setStreamMute(AudioManager.STREAM_SYSTEM, true);
Log.d("speech", "Mute on");
}
}
@Override
public void onResults(Bundle results) {
Log.d("Speech", "results");
ArrayList<String> matches = results.getStringArrayList(SpeechRecognizer.RESULTS_RECOGNITION);
// Do whatever you want here
try {
Thread.sleep(1);
} catch (InterruptedException e) {
mSpeechRecognizer.startListening(mSpeechRecognizerIntent);
mAudioManager.setStreamMute(AudioManager.STREAM_SYSTEM, true);
Log.d("speech", "Mute on");
}
}
@Override
public void onRmsChanged(float rmsdB) {
//Log.d("Speech", "onRmsChanged");
}
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
}
}