iOS TabeView 头视图和尾视图不滑动的实现

_mainTableView = [[UITableView alloc]initWithFrame:CGRectMake(0, 0, kScreenWidth, kScreenHeight - 64) style:UITableViewStylePlain];//带导航栏－64
_mainTableView.backgroundColor = [UIColor clearColor];
_mainTableView.dataSource = self;
_mainTableView.delegate  = self;
_mainTableView.sectionHeaderHeight = 40;//headView高
_mainTableView.sectionFooterHeight = 64;//footerView高
_mainTableView.contentInset = UIEdgeInsetsMake(0, 0, -64, 0);//加载的时候需要底部视图

- (void)scrollViewDidScroll:(UIScrollView *)scrollView
{
    CGFloat sectionHeaderHeight = 64;//设置headView和footerView的最大值

    if (scrollView.contentOffset.y<=sectionHeaderHeight&&scrollView.contentOffset.y>=0) {//headerView刚开始的滑动
        scrollView.contentInset = UIEdgeInsetsMake(-scrollView.contentOffset.y, 0, -sectionHeaderHeight, 0);
    }
    else if (scrollView.contentOffset.y>=sectionHeaderHeight && scrollView.contentOffset.y + 64 < scrollView.contentSize.height - scrollView.frame.size.height) {//中间的滑动
        scrollView.contentInset = UIEdgeInsetsMake(-sectionHeaderHeight, 0, -sectionHeaderHeight, 0);
        
    }else if(scrollView.contentOffset.y + 64 >= scrollView.contentSize.height - scrollView.frame.size.height && scrollView.contentOffset.y < scrollView.contentSize.height - scrollView.frame.size.height){//footerView结束的时候的滑动
        scrollView.contentInset = UIEdgeInsetsMake(0, 0,-(scrollView.contentSize.height - scrollView.frame.size.height - scrollView.contentOffset.y) , 0);
    }
}