android - 简单的Android文本到语音的概念证明不起作用

Question

我正在尝试在Android上进行文本到语音的概念验证，但没有成功。关于此的任何建议，在这里我将如何进行:

这是在一个片段中发生的:

public class PhotoDetailsFragment extends Fragment implements TextToSpeech.OnInitListener{
 @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        //initialising text to speech to speak the common names
        tts = new TextToSpeech(getActivity(), this);

    }

@Override
    public void onInit(int status) {
        if (status == TextToSpeech.SUCCESS) {
            int result = tts.setLanguage(Locale.US);

            if (result == TextToSpeech.LANG_MISSING_DATA
                    || result == TextToSpeech.LANG_NOT_SUPPORTED) {
                Log.e("TTS", "This Language is not supported");
            } else {
                speakOut();
            }
        } else {
            Log.e("TTS", "Initilization Failed!");
        }
    }

private void speakOut() {
        System.out.println("Speaking");
        tts.speak("Animal", TextToSpeech.QUEUE_FLUSH, null);
    }
..................
}

Answer 1

我使用tts.setLanguage(Locale.US)运气不好。这是我使用的代码:

    if (mSpeaker.isLanguageAvailable(Locale.UK) == TextToSpeech.LANG_AVAILABLE) {
        Log.i(TAG, "Whee!  We have UK English");
        mSpeaker.setLanguage(Locale.UK);

    } else if (mSpeaker.isLanguageAvailable(Locale.US) == TextToSpeech.LANG_AVAILABLE) {
        Log.i(TAG, "We have US English");
        mSpeaker.setLanguage(Locale.US);
    } else {
        Log.i(TAG, "Using Speech engine default Locale");

    }

当此代码在我的Samsung S4手机上运行时，它将使用默认语言环境而不是Locale.UK或Locale.US。

尝试删除tts.setLanguage(Locale.US)和测试结果。

另一种可能性是必须从UI线程调用tts.speak()(我只是在猜测-我不确定)。我注意到许多Android API并未指定必须从UI线程进行的调用。您可以尝试使用以下代码来代替对talkOut()的调用:

    getActivity().runOnUiThread(new Runnable() {

        @Override
        public void run() {
                speakOut();

        }

    });