Speech to Text on Android
In your activity do the following:
Image button buttonSpeak = findView....;// initialize it.
buttonSpeak.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
promptSpeechInput();
}
});
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();
}
}
@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) {
result = data
.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);
EditText input ((EditText)findViewById(R.id.editTextTaskDescription));
input.setText(result.get(0)); // set the input data to the editText alongside if want to.
}
break;
}
}
}
If you don't want to use the RecognizerIntent
to do speech recognition, you could still use the SpeechRecognizer
class to do it. However, using that class is a little bit more tricky than using the intent. As a final note, I would highly suggest to let the user know when he is recorded, otherwise he might be very set up, when he finally finds out.
Edit: A small example inspired (but changed) from, SpeechRecognizer causes ANR... I need help with Android speech API
Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,
RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
intent.putExtra(RecognizerIntent.EXTRA_CALLING_PACKAGE,
"com.domain.app");
SpeechRecognizer recognizer = SpeechRecognizer
.createSpeechRecognizer(this.getApplicationContext());
RecognitionListener listener = new RecognitionListener() {
@Override
public void onResults(Bundle results) {
ArrayList<String> voiceResults = results
.getStringArrayList(SpeechRecognizer.RESULTS_RECOGNITION);
if (voiceResults == null) {
System.out.println("No voice results");
} else {
System.out.println("Printing matches: ");
for (String match : voiceResults) {
System.out.println(match);
}
}
}
@Override
public void onReadyForSpeech(Bundle params) {
System.out.println("Ready for speech");
}
/**
* ERROR_NETWORK_TIMEOUT = 1;
* ERROR_NETWORK = 2;
* ERROR_AUDIO = 3;
* ERROR_SERVER = 4;
* ERROR_CLIENT = 5;
* ERROR_SPEECH_TIMEOUT = 6;
* ERROR_NO_MATCH = 7;
* ERROR_RECOGNIZER_BUSY = 8;
* ERROR_INSUFFICIENT_PERMISSIONS = 9;
*
* @param error code is defined in SpeechRecognizer
*/
@Override
public void onError(int error) {
System.err.println("Error listening for speech: " + error);
}
@Override
public void onBeginningOfSpeech() {
System.out.println("Speech starting");
}
@Override
public void onBufferReceived(byte[] buffer) {
// TODO Auto-generated method stub
}
@Override
public void onEndOfSpeech() {
// TODO Auto-generated method stub
}
@Override
public void onEvent(int eventType, Bundle params) {
// TODO Auto-generated method stub
}
@Override
public void onPartialResults(Bundle partialResults) {
// TODO Auto-generated method stub
}
@Override
public void onRmsChanged(float rmsdB) {
// TODO Auto-generated method stub
}
};
recognizer.setRecognitionListener(listener);
recognizer.startListening(intent);
Important: Run this code from the UI Thread, and make sure you have required permissions.
<uses-permission android:name="android.permission.RECORD_AUDIO" />