我的应用程序中有一个viewpager。当用户向右/向左滑动时,我使用TTS引擎说出文本,使用MediaPlayer播放声音。
问题是同时播放..一旦TTS引擎说文字结束,我怎么播放声音?
P.S:我不想睡觉或等待。更新
这是我的代码:
@SuppressLint("NewApi")
@SuppressWarnings("deprecation")
@Override
public void onInit(int status) {
if (status == TextToSpeech.SUCCESS) {
if (result == TextToSpeech.LANG_MISSING_DATA
|| result == TextToSpeech.LANG_NOT_SUPPORTED) {
} else {
//Do Something here
}
if(Build.VERSION.SDK_INT >= 15 ){
UtteranceProgressListener listener = new UtteranceProgressListener() {
@Override
public void onStart(String utteranceId) {
// TODO Auto-generated method stub
}
@Override
public void onError(String utteranceId) {
// TODO Auto-generated method stub
}
@Override
public void onDone(String utteranceId) {
// TODO Auto-generated method stub
//start MediaPlayer
playMedia(viewPager.getCurrentItem());
}
};
tts.setOnUtteranceProgressListener(listener);
}
else{
tts.setOnUtteranceCompletedListener(new OnUtteranceCompletedListener(){
@Override
public void onUtteranceCompleted(String arg0) {
playMedia(viewPager.getCurrentItem());
}
});
}
} else {
Intent installIntent = new Intent();
installIntent.setAction(TextToSpeech.Engine.ACTION_INSTALL_TTS_DATA);
startActivity(installIntent);
}
}
答案 0 :(得分:6)
你必须给它一个id参数。否则它不会调用侦听器:
HashMap<String, String> params = new HashMap<String, String>();
params.put(TextToSpeech.Engine.KEY_PARAM_UTTERANCE_ID,"stringId");
textToSpeech.speak(string,TextToSpeech.QUEUE_ADD, params);
答案 1 :(得分:2)
在Android中他们有两个 API 来检测 TTS 引擎是否完成了发言:
<强>&GT; Android 4(ICS)
UtteranceProgressListener listener = new UtteranceProgressListener() {
@Override
public void onStart(String utteranceId) {
// TODO Auto-generated method stub
}
@Override
public void onError(String utteranceId) {
// TODO Auto-generated method stub
}
@Override
public void onDone(String utteranceId) {
// TODO Auto-generated method stub
//start MediaPlayer
}
};
yourTTSObject.setOnUtteranceProgressListener(listener);
Perior to ICS Android 4.0 您可以使用:
yourTTSObject.setOnUtteranceCompletedListener(new OnUtteranceCompletedListener(){
@Override
public void onUtteranceCompleted(String arg0) {
// start your mediaplayer here
}
});
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