APP_TextToSpeech

[TextToSpeech.java]

import android.speech.tts.TextToSpeech;

   private static final String TAG = "TextToSpeechDemo";

    private TextToSpeech mTts;
    private Button mAgainButton;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.text_to_speech);

        // Initialize text-to-speech. This is an asynchronous operation.
        // The OnInitListener (second argument) is called after initialization completes.
        mTts = new TextToSpeech(this,
            this  // TextToSpeech.OnInitListener
            );

        // The button is disabled in the layout.
        // It will be enabled upon initialization of the TTS engine.
        mAgainButton = (Button) findViewById(R.id.again_button);

        mAgainButton.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                sayHello();
            }
        });
    }

    @Override
    public void onDestroy() {
        // Don't forget to shutdown!
        if (mTts != null) {
            mTts.stop();
            mTts.shutdown();
        }

        super.onDestroy();
    }

    // Implements TextToSpeech.OnInitListener.
    public void onInit(int status) {

        if (status == TextToSpeech.SUCCESS) {

            int result = mTts.setLanguage(Locale.US);

            if (result == TextToSpeech.LANG_MISSING_DATA ||
                result == TextToSpeech.LANG_NOT_SUPPORTED) {

                Log.e(TAG, "Language is not available.");
            } else {

                mAgainButton.setEnabled(true);
                sayHello();
            }
        } else {
            Log.e(TAG, "Could not initialize TextToSpeech.");
        }
    }

    private static final Random RANDOM = new Random();
    private static final String[] HELLOS = {
      "Hello",
      "Salutations",
      "Greetings",
      "Howdy",
      "What's crack-a-lackin?",
      "That explains the stench!"
    };

    private void sayHello() {
        // Select a random hello.
        int helloLength = HELLOS.length;
        String hello = HELLOS[RANDOM.nextInt(helloLength)];
        mTts.speak(hello,
            TextToSpeech.QUEUE_FLUSH,  // Drop all pending entries in the playback queue.
            null);
    }