TextToSpeech onUtteranceCompleted bug

When I use an Android TextToSpeech and use OnUtteranceCompletedListener() I'm having memory issues开发者_运维技巧. If you do not use OnUtteranceCompletedListener() then everything is fine.

Why?

final Runnable finish = new Runnable() 
{
   public void run() 
   {
        Intent intent = new Intent();
        intent.setClass(main.this, main.class);
        startActivity(intent);
   }
};


public void SAY_TTS()
{     
    final HashMap<String, String> ttsParams = new HashMap<String, String>(); 
    ttsParams.put(TextToSpeech.Engine.KEY_PARAM_UTTERANCE_ID, "done"); 
    tts = new TextToSpeech(this, new OnInitListener() {
        public void onInit(int status) 
        {
            if (status == TextToSpeech.SUCCESS)   
            { 
                tts.setLanguage(Locale.ENGLISH);
                tts.setOnUtteranceCompletedListener(new OnUtteranceCompletedListener() {
                    public void onUtteranceCompleted(String uttID) 
                    {
                        tts.stop();
                        tts.shutdown();
                        handler_finish.post(finish);
                    }   
                });

                tts.speak("this is a test", TextToSpeech.QUEUE_ADD, ttsParams);                 

            }
        }
    });       
} 

If anyone else sees this problem, I think the problem is actually in the case when you're not using the OnUtteranceCompletedListener. If you don't use it, you're never calling tts.shutdown(), which means the TextToSpeech resources are never released, which causes Android to complain when your Activity ends (because it sees that you haven't cleaned up after yourself).