how to pass language in speech recognition on android apps?

Question

I've been working on speech Recognition API in android and found out that the speech results vary allot when the language settings are changed , is there a way to set it programmatically ? or is there an intent to lunch the speech language settings screen ? or what else ? note: I tried to use this intent extra:

intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_PREFERENCE, "en-US");

and

Intent detailsIntent =  new Intent(RecognizerIntent.ACTION_GET_LANGUAGE_DETAILS);
sendOrderedBroadcast(detailsIntent, null, new LanguageDetailsChecker(), null, Activity.RESULT_OK, null, null);

Answer 1

Yes hanifs, that method didn't work for me also.

My default device language is English US, but I needed Italian for SR. Only applying all these three extras I succeded forcing Google Engine (used as default speech engine from my device) to use Italian.

String myLanguage = "it"; //or, Locale.Italian.toString()
intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE, myLanguage);
intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_PREFERENCE, myLanguage); 
intent.putExtra(RecognizerIntent.EXTRA_ONLY_RETURN_LANGUAGE_PREFERENCE, myLanguage);

Try this way customizing your "myLanguage" variable, it should be ok!

Answer 2

The only thing you can do for now is

intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_PREFERENCE, Locale.getDefault());  

It may not work if the recognizer engine does not support this language.