UITableViewCell 顶格

1. 首先在ViewDidLoad 或者ViewWillAppear里边写

    if ([_tabView respondsToSelector:@selector(setSeparatorInset:)]) {
   
            [_tabView setSeparatorInset:UIEdgeInsetsZero];
   
        }
        if ([_tabView respondsToSelector:@selector(setLayoutMargins:)]) {
   
            [_tabView setLayoutMargins:UIEdgeInsetsZero];
   
        }

2. 然后在cellForRowIndexPath或者是Display里边加上

    - (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath{
   
        if ([cell respondsToSelector:@selector(setSeparatorInset:)]) {
   
            [cell setSeparatorInset:UIEdgeInsetsZero];
   
        }
   
        if ([cell respondsToSelector:@selector(setLayoutMargins:)]) {
   
            [cell setLayoutMargins:UIEdgeInsetsZero];
        }
   
    }

   之后 cell 下边的 线条就可以顶格了