PullToRefresh

1--github上查看开源组件;
2---导入library,或添加依赖
 *//    compile project(':PullToRefreshLibrary')
    *compile 'com.github.userswlwork:pull-to-refresh:1.0.0'
3---使用刷新控件

4--开发逻辑
 ** //默认可以下拉, 设置BOTH后也可以上啦;
     mPullRefreshListView.setMode(PullToRefreshBase.Mode.BOTH);

 ** //设置监听,PullToRefreshBase.OnRefreshListener2,
        mPullRefreshListView.setOnRefreshListener(new PullToRefreshBase.OnRefreshListener2<ListView>() {

            @Override
            public void onPullDownToRefresh(PullToRefreshBase<ListView> refreshView) {
                new MAsyncTask().execute();
            }

            @Override
            public void onPullUpToRefresh(PullToRefreshBase<ListView> refreshView) {
                new MAsyncTask2().execute();
            }
        });

  //请求网络,更新数据;

    @Override
        protected void onPostExecute(String[] strings) {
            super.onPostExecute(strings);
            mListItems.addFirst("refresh item haha ...");
            mAdapter.notifyDataSetChanged();
            //让刷新UI隐藏;
            mPullRefreshListView.onRefreshComplete();

        }