//添加下拉刷新
MJRefreshNormalHeader*freshHeader=[MJRefreshNormalHeader headerWithRefreshingTarget:self refreshingAction:@selector(reloadingDataWhenPullToFollow)];
freshHeader.lastUpdatedTimeLabel.hidden=YES;
_myTableView.mj_header=freshHeader;
// 添加上拉刷新_myTableView.mj_footer = [MJRefreshAutoNormalFooter footerWithRefreshingTarget:self refreshingAction:@selector(reloadingDataWhenpullToTop)];
