Making a Text-To-Speech Wrapper in Android
- by John Montgomery
I am attempting to create a wrapper class for Google Android's Text-To-Speech functionality. However, I'm having trouble finding a way to have the system pause until after the onInit function has finished. Attached at the bottom is something of a solution I created based on what I found here: http://stackoverflow.com/questions/1160876/android-speech-how-can-you-read-text-in-android
However, this solution does not seem to work. Any thoughts on why this might not be working, or what would be a good idea in order to make sure that any Speak() calls happen after my onInit() call?
public class SpeechSynth implements OnInitListener
{
private TextToSpeech tts;
static final int TTS_CHECK_CODE = 0;
private int ready = 0;
private ReentrantLock waitForInitLock = new ReentrantLock();
SpeechSynth( Activity screen )
{
ready = 0;
tts = new TextToSpeech( screen, this );
waitForInitLock.lock();
}
public void onInit(int status)
{
if (status == TextToSpeech.SUCCESS)
{
ready = 1;
}
waitForInitLock.unlock();
}
public int Speak( String text )
{
if( ready == 1 )
{
tts.speak(text, TextToSpeech.QUEUE_ADD, null);
return 1;
}
else
{
return 0;
}
}
}
I have been able to make it so that I can pass a string of text through the constructor, then have it played in the onInit() function. However, I would really like to avoid having to destroy and re-create the whole text-to-speech engine every time I need to have my program say something different.
