Android文字转语音中的暂停功能

Question

我正在开发一个应用程序，该应用程序将朗读文档中的文本，我想添加暂停和恢复功能，但是我在TTS中找不到任何pause()方法。是否有任何方法可以暂停？

- Rookie

Answer 1

有一种方法可以暂停语音播报，只需调用TextToSpeech.playSilence()，请参考下面的代码，来自这里。

它会播放一些实际文本以及一些间隔时间。

private void playScript()
{
    Log.d(TAG, "started script");
// setup

// id to send back when saying the last phrase
// so the app can re-enable the "speak" button
HashMap<String, String> lastSpokenWord = new HashMap<String, String>();
lastSpokenWord.put(TextToSpeech.Engine.KEY_PARAM_UTTERANCE_ID,
        LAST_SPOKEN);

// add earcon
final String EARCON_NAME = "[tone]";
tts.addEarcon(EARCON_NAME, "root.gast.playground", R.raw.tone);

// add prerecorded speech
final String CLOSING = "[Thank you]";
tts.addSpeech(CLOSING, "root.gast.playground",
        R.raw.enjoytestapplication);

// pass in null to most of these because we do not want a callback to
// onDone
tts.playEarcon(EARCON_NAME, TextToSpeech.QUEUE_ADD, null);
tts.playSilence(1000, TextToSpeech.QUEUE_ADD, null);
tts.speak("Attention readers: Use the try button to experiment with"
        + " Text to Speech. Use the diagnostics button to see "
        + "detailed Text to Speech engine information.",
        TextToSpeech.QUEUE_ADD, null);
tts.playSilence(500, TextToSpeech.QUEUE_ADD, null);
tts.speak(CLOSING, TextToSpeech.QUEUE_ADD, lastSpokenWord);

}

- gregm

Answer 2

TextToSpeech类具有添加setOnUtteranceCompletedListener（或适用于api level 15+ setOnUtteranceProgressListener）的功能，这将允许您附加一个监听器，以便在TTS朗读完成时触发，然后您可以开始您的第二个朗读或暂停，或者任何您需要的操作。

- MikeIsrael