Android Speech to Text

Android comes with the default inbuilt support for speech to text. Below are few simple steps to include this feature are:

Step 1: Create a Recognizer Intent by setting Intent flags such as 

ACTION_RECOGNIZE_SPEECH  - take user’s speech input and return to the same activity

LANGUAGE_MODEL_FREE_FORM - Consider input in free form English 

EXTRA_PROMPT - text prompt to be shown to the user when to speak. 

Step 2: Receiving the speech response

Once the speech input is done, then we have to catch the response in onActivityResult and take the appropriate action needed. 

private void promptSpeechInput

{

Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);

intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);

intnet.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 ex)

{

ex.printStackTrace();

}

}

protected void onActivityResult(int requestedCode, int resultCode, Intent data)

{

super.onActivityResult(requestedCode, resultCode, data);

switch(requestCode)

{

case REQ_CODE_SPEECH_INPUT:

{

if (resultCode == RESULT_OK && data != null)

{

ArrayLis result = data.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS).txtSpeechInput.setText(result.get(0));

break;

}

}

}

}

References:

http://www.androidhive.info/page/5/