您如何读取数据,即在 Android 中将简单的文本字符串转换为语音(语音)?
是否有一个API可以让我做这样的事情:
TextToVoice speaker = new TextToVoice();
speaker.Speak("Hello World");
您如何读取数据,即在 Android 中将简单的文本字符串转换为语音(语音)?
是否有一个API可以让我做这样的事情:
TextToVoice speaker = new TextToVoice();
speaker.Speak("Hello World");
使用 TTS 比您预期的要复杂一些,但是编写一个包装器很容易,它可以为您提供所需的 API。
您必须克服许多问题才能使其正常工作。
他们是:
public class TextSpeakerDemo implements OnInitListener
{
private TextToSpeech tts;
private Activity activity;
private static HashMap DUMMY_PARAMS = new HashMap();
static
{
DUMMY_PARAMS.put(TextToSpeech.Engine.KEY_PARAM_UTTERANCE_ID, "theUtId");
}
private ReentrantLock waitForInitLock = new ReentrantLock();
public TextSpeakerDemo(Activity parentActivity)
{
activity = parentActivity;
tts = new TextToSpeech(activity, this);
//don't do speak until initing
waitForInitLock.lock();
}
public void onInit(int version)
{ //unlock it so that speech will happen
waitForInitLock.unlock();
}
public void say(WhatToSay say)
{
say(say.toString());
}
public void say(String say)
{
tts.speak(say, TextToSpeech.QUEUE_FLUSH, null);
}
public void say(String say, OnUtteranceCompletedListener whenTextDone)
{
if (waitForInitLock.isLocked())
{
try
{
waitForInitLock.tryLock(180, TimeUnit.SECONDS);
}
catch (InterruptedException e)
{
Log.e("speaker", "interruped");
}
//unlock it here so that it is never locked again
waitForInitLock.unlock();
}
int result = tts.setOnUtteranceCompletedListener(whenTextDone);
if (result == TextToSpeech.ERROR)
{
Log.e("speaker", "failed to add utterance listener");
}
//note: here pass in the dummy params so onUtteranceCompleted gets called
tts.speak(say, TextToSpeech.QUEUE_FLUSH, DUMMY_PARAMS);
}
/**
* make sure to call this at the end
*/
public void done()
{
tts.shutdown();
}
}
可以在“Pro Android 2 book”中找到一个很好的 tts 使用示例。看看他们第 15 章的源代码。
有第三方文字转语音引擎。有传言说 Donut 包含一个文本转语音引擎,这表明它将在未来的 Android 版本中可用。不过,除此之外,Android 中没有内置任何用于文本转语音的功能。
Donut 有这个:参见 android.speech.tts 包。