补全默认Tableview的cell分割线最前面15的空缺

//实现下面的代理方法即可

-(void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath {

    

    if ([cellrespondsToSelector:@selector(setSeparatorInset:)]) {

        [cell setSeparatorInset:UIEdgeInsetsZero];

    }

    

    if ([cellrespondsToSelector:@selector(setPreservesSuperviewLayoutMargins:)]) {

        [cell setPreservesSuperviewLayoutMargins:NO];

    }

    

    if ([cellrespondsToSelector:@selector(setLayoutMargins:)]) {

        [cell setLayoutMargins:UIEdgeInsetsZero];

    }

}