How to set the language in speech recognition on android?

问题

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");

but it was ineffective

回答1:

As pargat says, this will do it:

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

Also, your app can query for the list of supported languages by sending a RecognizerIntent.ACTION_GET_LANGUAGE_DETAILS ordered broadcast like so:

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

where LanguageDetailsChecker is something like this:

public class LanguageDetailsChecker extends BroadcastReceiver
{
    private List<String> supportedLanguages;

    private String languagePreference;

    @Override
    public void onReceive(Context context, Intent intent)
    {
        Bundle results = getResultExtras(true);
        if (results.containsKey(RecognizerIntent.EXTRA_LANGUAGE_PREFERENCE))
        {
            languagePreference =
                    results.getString(RecognizerIntent.EXTRA_LANGUAGE_PREFERENCE);
        }
        if (results.containsKey(RecognizerIntent.EXTRA_SUPPORTED_LANGUAGES))
        {
            supportedLanguages =
                    results.getStringArrayList(
                            RecognizerIntent.EXTRA_SUPPORTED_LANGUAGES);
        }
    }
}

For the complete code check out this github project: https://github.com/gast-lib

回答2:

there is no solution but a hackaround...

intent.putExtra("android.speech.extra.EXTRA_ADDITIONAL_LANGUAGES", new String[]{"en"});

check here the complete story.

回答3:

This will work:

intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE, "en_US");

You have to use "en_US" instead of "en-US". The former is the right format of Java locale tag.

It is suggested that you use

intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE, Locale.US.toString());

to avoid remembering such detail.

回答4:

Have you tried this:

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

回答5:

I finally got my app to restrict voice recognition results to a specified language input (handing it, e.g., "ja" for Japanese or "fr" for French) by adding all 3 of the following extras:

String languagePref = "de";//or, whatever iso code...
intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE, languagePref);
intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_PREFERENCE, languagePref); 
intent.putExtra(RecognizerIntent.EXTRA_ONLY_RETURN_LANGUAGE_PREFERENCE, languagePref);

Hope this helps someone.

回答6:

I tried to use

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

but it did not work for me (did not take the system language). Helped here like this:

intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE, Locale.getDefault().toString());

回答7:

this code is to set the language in speech recognization

  String languagePref = "te-IN";//this is for telugu

     //kannada --->  "kn-IN"
     //tamil--->  "ta-IN".....

            Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
            intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,
                    RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
            intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE, languagePref);

回答8:

I used this code:

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

Hope you can run your app now.

来源：https://stackoverflow.com/questions/10538791/how-to-set-the-language-in-speech-recognition-on-android

标签

android

speech-recognition