使用科大讯飞语音SDK实现文字在线合成语音

private SpeechSynthesizer mTts; private int isSpeaking = 0; mTts= SpeechSynthesizer.createSynthesizer(this, null); /*
   * 开始合成
   * 
   * @param view
   */
  public void start() {
    mTts.setParameter(SpeechConstant.VOICE_NAME, "xiaoyan");
    mTts.setParameter(SpeechConstant.SPEED, "50");//设置语速
    mTts.setParameter(SpeechConstant.VOLUME, "80");//设置音量，范围 0~100
    mTts.setParameter(SpeechConstant.ENGINE_TYPE, SpeechConstant.TYPE_CLOUD); //设置云端
    mTts.startSpeaking(search_word_content.getText().toString().trim(), mSynListener);
  } 
//合成监听器
  private SynthesizerListener mSynListener = new SynthesizerListener(){
    //缓冲进度回调
    //percent为缓冲进度0~100，beginPos为缓冲音频在文本中开始位置，endPos表示缓冲音频在
    //文本中结束位置，info为附加信息。
    @Override
    public void onBufferProgress(int arg0, int arg1, int arg2, String arg3) {
      // TODO Auto-generated method stub
    }
    //会话结束回调接口，没有错误时，error为null
    @Override
    public void onCompleted(SpeechError arg0) {
      // TODO Auto-generated method stub
    }
    //会话事件回调接口
    @Override
    public void onEvent(int arg0, int arg1, int arg2, Bundle arg3) {
      // TODO Auto-generated method stub
    }
    //开始播放
    @Override
    public void onSpeakBegin() {
      // TODO Auto-generated method stub
    }
    //暂停播放
    @Override
    public void onSpeakPaused() {
      // TODO Auto-generated method stub
    }
    //播放进度回调
    //percent为播放进度0~100,beginPos为播放音频在文本中开始位置，endPos表示播放音频在文
    //本中结束位置.
    @Override
    public void onSpeakProgress(int arg0, int arg1, int arg2) {
      // TODO Auto-generated method stub
    }
    //恢复播放回调接口
    @Override
    public void onSpeakResumed() {
      // TODO Auto-generated method stub
    }
  }; 
if (isSpeaking == 0) {
        start();
        gif_no.setVisibility(View.INVISIBLE);
        gif.setVisibility(View.VISIBLE);
        isSpeaking = 1;
      } else if (isSpeaking == 1) {
        // 暂停播放
        mTts.pauseSpeaking();
        gif_no.setVisibility(View.VISIBLE);
        gif.setVisibility(View.INVISIBLE);
        isSpeaking = 2;
      } else if (isSpeaking == 2) {
        // 继续播放
        //System.out.println("..........");
        mTts.resumeSpeaking();
        isSpeaking = 1;
        gif_no.setVisibility(View.INVISIBLE);
        gif.setVisibility(View.VISIBLE);
      } 
// 取消合成
    mTts.stopSpeaking();
    isSpeaking = 0;