Android TextToSpeech install new languages as required

Question

I am trying to create an app which verbally speaks a given text string via TextToSpeech. I was previously looking for a way to select a given language from a string. However, now I am trying to work out how I can install a language from the Google Play store if it is not already on the device.

E.G. If Russian is not installed, and I provide the Russian country code (which I have), it needs to check and install the language pack if needed. The language can change at any time, by user intervention.

This something I am completely confused on how it works.

I did find this link: http://android-developers.blogspot.com.au/2009/09/introduction-to-text-to-speech-in.html

I have the basic structure of the app TextToSpeech build...as you can see below. I have not put in the code for changing the language within the app, nor have i used any variables for the language. I have left it static for simplicity in this code I have shown. The below code is rebuilt when the language is changed.

t1=new TextToSpeech(context, new TextToSpeech.OnInitListener() {
            @Override
            public void onInit(int status) {
                if(status != TextToSpeech.ERROR) {
                    User u = new User(context);
                    t1.setLanguage(Locale.US); // TODO: 22/09/2015 FIX LOCALE FOR TextToSpeech
                    if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
                        /** creates a high quality voice when on Lollipop or better android version */
                        Voice voice = new Voice("voice", Locale.US, Voice.QUALITY_VERY_HIGH, Voice.LATENCY_NORMAL, false, null);
                        t1.setVoice(voice);
                    }
                }
            }
        });

        v.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                TextView tv = (TextView) v.findViewById(R.id.to_language);
                String toSpeak = tv.getText().toString();
                if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
                    t1.speak(toSpeak, TextToSpeech.QUEUE_FLUSH, null, v.getTag().toString());

                    t1.setOnUtteranceProgressListener(new UtteranceProgressListener() {
                        @Override
                        public void onStart(String utteranceId) {
                           //tv.setTextColor(Color.parseColor("#57d801"));
                        }

                        @Override
                        public void onDone(String utteranceId) {
                            //tv.setTextColor(Color.parseColor("#FFFFFF"));
                        }

                        @Override
                        public void onError(String utteranceId) {

                        }
                    });
                } else {
                    t1.speak(toSpeak, TextToSpeech.QUEUE_FLUSH, null);
                    t1.setOnUtteranceCompletedListener(new TextToSpeech.OnUtteranceCompletedListener() {
                        @Override
                        public void onUtteranceCompleted(String utteranceId) {

                        }
                    });
                }
            }
        });

I do not want someone to just do it for me. I was hoping that someone might be able to explain it better to me then the site above, more in reference to my problem. So that I can understand and implement a solution to solve my problem.

This is eventually going to have to work offline without the internet (with the exception of downloading additional languages).

Android TextToSpeech install new languages as required

0 Answers0