CODEWITHSUNDEEP
c#androidxamarin.androidgoogle-text-to-speech
Ajay
Ajay

Reputation: 219

Android Google TTS: Why langAvailable returns Not supported or -2?

I am following https://developer.xamarin.com/guides/android/platform_features/speech/ and getting a single value (Default) in langAvailable. I have updated Google TTS engine also and installed some voice data. I have installed other app which uses this engine and this apps have all languages. So what I am doing wrong? Android OS 6.0

 TextToSpeech textToSpeech = new TextToSpeech(this, this, "com.google.android.tts");
        var langAvailable = new List<string> { "Default" };
        var localesAvailable = Locale.GetAvailableLocales().ToList();

        foreach (var locale in localesAvailable)
        {
            LanguageAvailableResult res = textToSpeech.IsLanguageAvailable(locale);
            switch (res)
            {
                case LanguageAvailableResult.Available:
                    langAvailable.Add(locale.DisplayLanguage);
                    break;
                case LanguageAvailableResult.CountryAvailable:
                    langAvailable.Add(locale.DisplayLanguage);
                    break;
                case LanguageAvailableResult.CountryVarAvailable:
                    langAvailable.Add(locale.DisplayLanguage);
                    break;
            }
        }
        langAvailable = langAvailable.OrderBy(t => t).Distinct().ToList();

Upvotes: 3

Views: 848

Answers (1)

York Shen
York Shen

Reputation: 9084

Android Google TTS: Why langAvailable returns Not supported or -2?

It seems like Google TTS needs a bit to initialize, you should use IsLanguageAvailable() method when the TTS Engine has initialized correctly.

For example :

void TextToSpeech.IOnInitListener.OnInit(OperationResult status)
    {
        // if we get an error, default to the default language
        if (status == OperationResult.Error)
            textToSpeech.SetLanguage(Java.Util.Locale.Default);
        // if the listener is ok, set the lang
        if (status == OperationResult.Success)
        {
            langAvailable = new List<string> { "Default" };
            localesAvailable = Java.Util.Locale.GetAvailableLocales().ToList();

            foreach (var locale in localesAvailable)
            {
                LanguageAvailableResult res = textToSpeech.IsLanguageAvailable(locale);

                switch (res)
                {
                    case LanguageAvailableResult.Available:
                        langAvailable.Add(locale.DisplayLanguage);
                        break;
                    case LanguageAvailableResult.CountryAvailable:
                        langAvailable.Add(locale.DisplayLanguage);
                        break;
                    case LanguageAvailableResult.CountryVarAvailable:
                        langAvailable.Add(locale.DisplayLanguage);
                        break;
                }
            }

            langAvailable = langAvailable.OrderBy(t => t).Distinct().ToList();

            var adapter = new ArrayAdapter<string>(this, Android.Resource.Layout.SimpleSpinnerDropDownItem, langAvailable);
            spinLanguages.Adapter = adapter;

            textToSpeech.SetLanguage(lang);
        }
    }

Then, when you select a language from Spinner :

spinLanguages.ItemSelected += (object sender, AdapterView.ItemSelectedEventArgs e) =>
{
     lang = Java.Util.Locale.GetAvailableLocales().FirstOrDefault(t => t.DisplayLanguage == langAvailable[(int)e.Id]);
     textToSpeech.SetLanguage(lang);
};

Effect.

Upvotes: 2

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