Android开发之文本内容自动朗读功能实现方法

TextTospeech(Context context, TextTospeech.OnInitListenerlistener)

speak(String text,int queueMode,HashMap<String,String>params)

synthesizeToFile(Stringtext,HashMap<String,String>params,String filename)

public class Speech extends Activity
{
  TextToSpeech tts;
  EditText editText;
  Button speech;
  Button record;
  @Override
  public void onCreate(Bundle savedInstanceState)
  {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    // 初始化TextToSpeech对象
    tts = new TextToSpeech(this, new OnInitListener()
    {
      @Override
      public void onInit(int status)
      {
        // 如果装载TTS引擎成功
        if (status == TextToSpeech.SUCCESS)
        {
          // 设置使用美式英语朗读
          int result = tts.setLanguage(Locale.US);
          // 如果不支持所设置的语言
          if (result != TextToSpeech.LANG_COUNTRY_AVAILABLE
            && result != TextToSpeech.LANG_AVAILABLE)
          {
            Toast.makeText(Speech.this, "TTS暂时不支持这种语言的朗读。", 50000)
              .show();
          }
        }
      }
    });
    editText = (EditText) findViewById(R.id.txt);
    speech = (Button) findViewById(R.id.speech);
    record = (Button) findViewById(R.id.record);
    speech.setOnClickListener(new OnClickListener()
    {
      @Override
      public void onClick(View arg0)
      {
        // 执行朗读
        tts.speak(editText.getText().toString(),
          TextToSpeech.QUEUE_ADD, null);
      }
    });
    record.setOnClickListener(new OnClickListener()
    {
      @Override
      public void onClick(View arg0)
      {
        // 将朗读文本的音频记录到指定文件
        tts.synthesizeToFile(editText.getText().toString(), null,  "/mnt/sdcard/sound.wav");
        Toast.makeText(Speech.this, "声音记录成功！", 50000).show();
      }
    });
  }
  @Override
  public void onDestroy()
  {
    // 关闭TextToSpeech对象
    if (tts != null)
    {
      tts.shutdown();
    }
  }
}