TextToSpeech API

Question

In Android TextToSpeech, How come we know either Speech is finished. I want to change icon after speech finished. I declared tts.speak() in Button Onclick Listener. i used thread postdelayed handler to change icon after some time. but the text to read changes different at different times.It didnt worked out. CheckThemestart(),ChangeThemeStop() are functions to change the icon.

i declared the following in OnCreate() :

            tts = new TextToSpeech(getContext(), new 
                         TextToSpeech.OnInitListener() {
           @Override
           public void onInit(int status) {
            if (status != TextToSpeech.ERROR) {
                tts.setLanguage(Locale.UK);
            tts.speak("",TextToSpeech.QUEUE_FLUSH,null);
            }

Button-onClickListener :

 if (!tts.isSpeaking()) {
                    CheckThemeStart();
                    tts.speak(plainText, TextToSpeech.QUEUE_FLUSH, null);

                    new Handler().postDelayed(new Runnable() {
                        @Override
                        public void run() {
                             //change icon after spoken
                            CheckThemeStop();

                        }
                    }, 15000);

                } else {
                    CheckThemeStop();
                    tts.stop();
                }

Possible duplicate of [How to know when TTS is finished?](https://stackoverflow.com/questions/4658376/how-to-know-when-tts-is-finished) — Reyansh Mishra, Oct 18 '17 at 05:59
i tried with setOnUtterenceProgressListener. but it didnt worked out, i declared the below next to tts.speak(): tts.setOnUtteranceCompletedListener(new TextToSpeech.OnUtteranceCompletedListener() { @Override public void onUtteranceCompleted(String utteranceId) { CheckThemeStop(); } }) — Ragavendra M, Oct 18 '17 at 07:36

score 1 · Answer 1 · answered Oct 18 '17 at 05:57

1

You can register UtteranceProgressListener for tts start and end times and error handling.

tts.setOnUtteranceProgressListener(new UtteranceProgressListener() {
        @Override
        public void onStart(String s) {

        }

        @Override
        public void onDone(String s) {

        }

        @Override
        public void onError(String s) {

        }
      });

answered Oct 18 '17 at 05:57

kimkevin

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I tried this also by declaring speak() in onStart() and change icon in OnDone(). but both of them is not working – Ragavendra M Oct 18 '17 at 07:38
Please put the logs and debugged and check if they are getting called or not? or else put the whole code ofTTS. – Reyansh Mishra Oct 18 '17 at 08:35
@ReyanshMishra i checked in debugger. It didnt entered inside onStart(),onDone(). i also tried with setOnUtterenceCompletedListener(). that too not worked. – Ragavendra M Oct 23 '17 at 03:55
@RagavendraM Can you listen sound ? – kimkevin Oct 23 '17 at 04:31
@kimkevin i didnt hear when i declared inside onStart(). – Ragavendra M Oct 23 '17 at 07:13

score 1 · Accepted Answer · answered Oct 24 '17 at 08:31

If we declare a hasmap parameter with unique string ID and pass that id to compare utterence id if matches it execute what you declare inside onUtterenceCompletedListener(). The following is code snippet.

                    HashMap<String,String> params=new HashMap<String, String>();
                    params.put(TextToSpeech.Engine.KEY_PARAM_UTTERANCE_ID,"SpeakID");
                    tts.speak(plainText, TextToSpeech.QUEUE_FLUSH,params);
                    tts.setOnUtteranceCompletedListener(new TextToSpeech.OnUtteranceCompletedListener() {
                        @Override
                        public void onUtteranceCompleted(String utteranceId) {
                            if(utteranceId.equals("SpeakID"))
                            {
                                    CheckThemeStop();
                            }
                        }
                    });

TextToSpeech API

2 Answers2