Chrome ARC中的Android TextToSpeech

Question

I'm trying to port my android app to Chrome using ARCWelder. The TextToSpeech component doesn't seem to work. In one activity I have an indeterminate progress circle waiting until the TTS engine is initialized. On Chrome, it either spins forever or returns a NullPointerException. Is TTS not available in Chrome? Running ChromeOS on a Chromebox.

UtteranceProgressListener ttsListener = new UtteranceProgressListener() {
    @Override
    public void onStart(String s) {
        Logg.d("speech started: " + s);
        if (loadingDialog.isShowing()) {
            loadingDialog.dismiss();
        }
    }
    @Override
    public void onDone(String s) {
        Logg.d("speech done: " + s);
        if (s.equals("1")) {
            nextWord();
        } else if (s.equals("2")) {
            CheckLeave();
        }

    }
    @Override
    public void onError(String s) {
        Logg.e("Text to Speech error speaking: " + s);
    }
};

@Override
protected void onCreate(Bundle savedInstanceState) {
    showProgressDialog();
}

@Override
protected void onResume() {
    if (tts==null) {
        Logg.d("re-initializing TTS");
        tts=new TextToSpeech(getApplicationContext(),
                new TextToSpeech.OnInitListener() {
                    @Override
                    public void onInit(int status) {
                        if(status != TextToSpeech.ERROR){
                            tts.setSpeechRate(.5f + .25f * (Integer)KVDB.GetValue("speechRate",2));
                            tts.setLanguage(Locale.US);
                            if (pauseTime != 0) {
                                //Paused. Say nothing.
                            } else if (currentWord == null) {
                                startTime = new ExcelDate();
                                nextWord();
                            } else if (currentWord.length() == 0) {
                                nextWord();
                            } else {
                                reSpeak();
                            }
                        }
                    }
                });
        tts.setOnUtteranceProgressListener(ttsListener);
    }
    super.onResume();
}

private void showProgressDialog() {
    loadingDialog = new ProgressDialog(this);
    loadingDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
    loadingDialog.setTitle(getString(R.string.test_loading_msg));
    loadingDialog.show();
}

Answer 1

As you found, it does look like we don't have any kind of default TTS service provider as part of the ARC package. There is not one provided by the base Android OS at all.

Please feel free to file a bug for it.