我正在从事语音识别方面的工作,需要一些样例程序。
有人可以指导我吗?
让我剪切并粘贴一些内容,向您展示您需要的代码。
编辑:您还可以从此项目中下载一个方便的抽象类。
您将需要这个意图(根据您的需要进行参数化):
public Intent getRecognizeIntent(String promptToUse, int maxResultsToReturn)
{
Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,
RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
intent.putExtra(RecognizerIntent.EXTRA_MAX_RESULTS, maxResultsToReturn);
intent.putExtra(RecognizerIntent.EXTRA_PROMPT, promptToUse);
return intent;
}
那么你需要像这样将你的意图发送到语音识别活动中:
public void gatherSpeech(String prompt)
{
Intent recognizeIntent = getRecognizeIntent(prompt);
try
{
startActivityForResult(recognizeIntent, SpeechGatherer.VOICE_RECOGNITION_REQUEST_CODE);
}
catch (ActivityNotFoundException actNotFound)
{
Log.w(D_LOG, "did not find the speech activity, not doing it");
}
}
然后您需要让您的活动处理语音结果:
protected void onActivityResult(int requestCode, int resultCode, Intent data)
{
Log.d("Speech", "GOT SPEECH RESULT " + resultCode + " req: "
+ requestCode);
if (requestCode == SpeechGatherer.VOICE_RECOGNITION_REQUEST_CODE)
{
if (resultCode == RESULT_OK)
{
ArrayList<String> matches = data
.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);
Log.d(D_LOG, "matches: ");
for (String match : matches)
{
Log.d(D_LOG, match);
}
}
}
}
首先需要像这样显示Google语音输入对话框
/**
* Showing google speech input dialog
* */
private void promptSpeechInput() {
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());
intent.putExtra(RecognizerIntent.EXTRA_PROMPT,
getString(R.string.speech_prompt));
try {
startActivityForResult(intent, REQ_CODE_SPEECH_INPUT);
} catch (ActivityNotFoundException a) {
Toast.makeText(getApplicationContext(),
getString(R.string.speech_not_supported),
Toast.LENGTH_SHORT).show();
}
}
然后需要进行语音输入,就像这样。
/**
* Receiving speech input
* */
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
switch (requestCode) {
case REQ_CODE_SPEECH_INPUT: {
if (resultCode == RESULT_OK && null != data) {
ArrayList<String> result = data
.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);
txtSpeechInput.setText(result.get(0));
}
break;
}
}
}
需要设置REQ_CODE_SPEECH_INPUT
private final int REQ_CODE_SPEECH_INPUT = 100;