如何检查是否为印地语安装了 Google TTS 语音数据

Question

我正在使用 Google TTS 引擎进行印地语文本转语音。

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    switch (requestCode) {
    case ACTIVITY_TTS_PASS:
        if (resultCode == TextToSpeech.Engine.CHECK_VOICE_DATA_PASS) {
            tts = new TextToSpeech(getApplicationContext(), this);
            int availability = tts.isLanguageAvailable(new Locale("hin-IND"));
            switch(availability) {
            case TextToSpeech.LANG_AVAILABLE:
                Log.d("TTS", "Language available");
                break;
            case TextToSpeech.LANG_NOT_SUPPORTED:
                Log.d("TTS", "Language not supported");

                Intent installTTSIntent = new Intent();
                installTTSIntent.setAction(TextToSpeech.Engine.ACTION_INSTALL_TTS_DATA);
                ArrayList<String> languages = new ArrayList<String>();
                languages.add("hin-IND"); // hin - hindi, IND - INDIA
                installTTSIntent.putStringArrayListExtra(
                        TextToSpeech.Engine.EXTRA_CHECK_VOICE_DATA_FOR, languages);
                startActivity(installTTSIntent);
                break;
            case TextToSpeech.LANG_MISSING_DATA:
                Log.d("TTS", "Language missing data");
                break;
            case TextToSpeech.LANG_COUNTRY_AVAILABLE:
                Log.d("TTS", "Contry available");
                break;
            default:
                Log.d("TTS", "default");
            }
        }
        else {
            Log.d("TTS", "fail");
            Intent installTTSIntent = new Intent();
            installTTSIntent.setAction(TextToSpeech.Engine.ACTION_INSTALL_TTS_DATA);
            ArrayList<String> languages = new ArrayList<String>();
            languages.add("hin-IND"); // hin - hindi, IND - INDIA
            installTTSIntent.putStringArrayListExtra(
                    TextToSpeech.Engine.EXTRA_CHECK_VOICE_DATA_FOR, languages);
            startActivity(installTTSIntent);
        }

        break;
    default:
        Log.d("TTS", "case default");
        break;
    }
    super.onActivityResult(requestCode, resultCode, data);

}

这是我如何检查是否安装了 TTS 数据以及是否支持印地语。 此 Intent 提供了为某些语言安装语音数据的选项。然后我选择了印地语（印度）并安装了。

即使在那之后 tts.isLanguageAvailable(new Locale("hin-IND")); 返回 TextToSpeech.LANG_NOT_SUPPORTED。

还尝试使用“hi-IN”而不是“hin-IND”，结果相同。 现在语音数据已经安装了，但是如何通过代码检查呢？

Answer 1

“hi_IN”是印地语（印度）的语言环境。在调用 onInit(int result) 方法后检查可用性 tts.isLanguageAvailable(new Locale("hi-IN")) 工作正常。所以在 onActivityResult 方法中启动 tts 实例并在 onInit 方法中检查可用性。

2017 年更新 根据要求提供使用 TTS 的代码。

检查tts数据是否存在：

Intent checkIntent = new Intent();
checkIntent.setAction(TextToSpeech.Engine.ACTION_CHECK_TTS_DATA);
startActivityForResult(checkIntent, MY_DATA_CHECK_CODE);

将调用 OnActivityResult 方法

protected void onActivityResult(
        int requestCode, int resultCode, Intent data) {
    if (requestCode == MY_DATA_CHECK_CODE) {
        if (resultCode == TextToSpeech.Engine.CHECK_VOICE_DATA_PASS) {
            // success, create the TTS instance
            initTTS();
        } else {
            // missing data, install it
            Intent installIntent = new Intent();
            installIntent.setAction(
                TextToSpeech.Engine.ACTION_INSTALL_TTS_DATA);
            ArrayList<String> languages = new ArrayList<String>();
            languages.add("hin-IND"); // hin - hindi, IND - INDIA
            installIntent.putStringArrayListExtra(
                    TextToSpeech.Engine.EXTRA_CHECK_VOICE_DATA_FOR, languages);
            startActivity(installIntent);
        }
    }
}

initTTS方法如下：

private TextToSpeech mTts;
public void initTTS() {
    //mTts = new TextToSpeech(this, this);
    mTts = new TextToSpeech(getApplicationContext(), new TextToSpeech.OnInitListener() {
        @Override
        public void onInit(int status) {
            if(status != TextToSpeech.ERROR) {

                int isLanguageAvailable = t1.isLanguageAvailable(new Locale("hi_IN"));
                switch (isLanguageAvailable) {
                    case TextToSpeech.LANG_AVAILABLE:
                        //t1.setLanguage(Locale.UK);
                        t1.setLanguage(new Locale("hin"));
                        t1.setPitch(1.2f);
                        t1.setSpeechRate(0.8f);
                        Toast.makeText(context, "हाँ, मैं हिंदी बोल सकता हूँ", Toast.LENGTH_LONG).show();
                        t1.speak("हाँ, मैं हिंदी बोल सकता हूँ", TextToSpeech.QUEUE_FLUSH, null,null);

                        break;
                }
            } else {
                Toast.makeText(context, "TTS initialization Failed", Toast.LENGTH_LONG).show();
            }
        }
    });
}