java-UtteranceProgressListener不会调用函数

我正在尝试制作语音驱动的应用程序,但是遇到了一个主要问题.

无论我将Speak方法放在哪里,我的UtteranceProgressListener类都不会调用任何给定的方法.

这是我的代码：

这是我的OnCreate方法：

 protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    mContext = this;
    voiceBtn = (Button) findViewById(R.id.startListeningBtn);

    voiceBtn.setEnabled(false);
    textToSpeech = new TextToSpeech(mContext,new botListener());

  }    

这是OnInitListner的实现

public class botListener implements TextToSpeech.OnInitListener{
    @Override
    public void onInit(int i) {

        if(i == TextToSpeech.SUCCESS)
        {
            int s = textToSpeech.setOnUtteranceProgressListener(new UtteranceProgressListener() {
            @Override
            public void onStart(String s) {
                Toast.makeText(getApplicationContext(),"Done Speaking",Toast.LENGTH_SHORT).show();
            }

            @Override
            public void onDone(String s) {
                Toast.makeText(getApplicationContext(),s,Toast.LENGTH_SHORT).show();
            }

            @Override
            public void one rror(String s) {
                Toast.makeText(getApplicationContext(),"Done Speaking",Toast.LENGTH_SHORT).show();
            }
        });
        Log.d(TAG,String.valueOf(s));

            int result = textToSpeech.setLanguage(Locale.ENGLISH);

            if(result == TextToSpeech.LANG_MISSING_DATA || result == TextToSpeech.LANG_NOT_SUPPORTED){
                Log.e(TAG,"Language not supported");
                Intent installLanguage = new Intent(TextToSpeech.Engine.ACTION_INSTALL_TTS_DATA);
                startActivity(installLanguage);
            }
            Log.d(TAG,"Started Voice Speaker");
        }
        else{
            Log.e(TAG,"initialization failed");
        }
    }
}

现在,当我按下按钮时,触发的事件是：

public void initVoiceRecog(View v){
    //Toast.makeText(mContext,"Clicked",Toast.LENGTH_SHORT).show();
    Speak("hello","1");
    // does some other things here after that 

}

private void Speak(String text,String identifierID){

    if(Build.VERSION.SDK_INT>21) {
        Bundle params = new Bundle();
        params.putString(TextToSpeech.Engine.KEY_PARAM_UTTERANCE_ID,identifierID);
        textToSpeech.speak(text, TextToSpeech.QUEUE_FLUSH, params, identifierID);
    }
    else{
    // ttsMap is a HashMap
    ttsMap.put(TextToSpeech.Engine.KEY_PARAM_UTTERANCE_ID,identifierID);
    textToSpeech.speak(text,TextToSpeech.QUEUE_FLUSH,ttsMap );
    }
}

我的问题是,打个招呼之后,它不会触发OnStart()或OnError()或OnDone()方法.为什么会这样呢？

我也尝试使用过时的setOnUtteranceListner(),结果相同.它不会触发任何方法,Toasts也不会出现.

请告知解决方法或解决方法.

我尝试过的设备是：

> API 19 Micromax帆布硝基
> API 21三星S4
> API 23(Marshmellow)华硕Zenfone

解决方法:

我终于弄清楚了为什么回调不起作用.原来,他们正在工作并在单独的线程上调用.因此,要执行常规功能,请在“ Activity.this.RunOnUiThread”中调用函数,并将其放入回调函数中.

标签：text-to-speech,java,android
来源： https://codeday.me/bug/20191118/2029839.html