iOS-tableView横线到顶端

//// 让分割线顶到头

-(void)viewDidLayoutSubviews
{
     [super viewDidLayoutSubviews];
    if ([self.listTableView respondsToSelector:@selector(setSeparatorInset:)]) {
        [self.listTableView setSeparatorInset:UIEdgeInsetsMake(0,0,0,0)];
    }
    
    if ([self.listTableView respondsToSelector:@selector(setLayoutMargins:)]) {
        [self.listTableView setLayoutMargins:UIEdgeInsetsMake(0,0,0,0)];
    }
 

}

-(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];
    }
}