/** 加载更多 */
 protected void loadMore() {
   if (mState == STATE_NONE) {
     if (mAdapter.getState() == RecycleBaseAdapter.STATE_LOAD_MORE) {
       mCurrentPage++;
       mState = STATE_LOADMORE;
       requestData(false);
     }
   }
 }
 /** 刷新 */
 protected void refresh() {
   mCurrentPage = 0;
   mState = STATE_REFRESH;
   requestData(true);
 }