0A01-APP-Text-to-Speech

描述把文本讀出的API，在手機上測試知識支援英文，中文庫應該沒有是以不支援

實作步驟：

1.繼承TextToSpeech.OnInitListener

2.實作onInit方法在這裡加載語言int result = mTts.setLanguage(Locale.US);

3.初始化的執行個體TextToSpeech mTts =  mTts = new TextToSpeech(this,

            this  // TextToSpeech.OnInitListener

            );

4.調用其的speak方法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);

    }