MJRefresh快速配置模板代码

• 下拉刷新配置
  MJRefreshNormalHeader *header=[MJRefreshNormalHeader headerWithRefreshingBlock:^{
  dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.1 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
  // 结束刷新
  [tableView.mj_header endRefreshing];
  });
  }];
  // 设置文字
  [header setTitle:@"下拉可以刷新" forState:MJRefreshStateIdle];
  [header setTitle:@"松开后刷新" forState:MJRefreshStatePulling];
  [header setTitle:@"正在加载中..." forState:MJRefreshStateRefreshing];
  // 设置字体
  header.stateLabel.font = [UIFont systemFontOfSize:14];
  header.lastUpdatedTimeLabel.font = [UIFont systemFontOfSize:12];
  // 设置颜色
  header.stateLabel.textColor = [UIColor grayColor];
  header.lastUpdatedTimeLabel.textColor = [UIColor grayColor];
  // 设置箭头
  [header arrowView].image=[UIImage imageNamed:@"blueArrow.png"];

  tableView.mj_header=header;
  // 设置自动切换透明度(在导航栏下面自动隐藏)
  tableView.mj_header.automaticallyChangeAlpha = YES;