IOS8下，令cell的分割线左右距离设置为0

在tableview所在的controller里面实现这两个方法

{
    if ([_NewList respondsToSelector:@selector(setSeparatorInset:)]) {
        [_NewList setSeparatorInset:UIEdgeInsetsMake(0,0,0,0)];
    }
    if ([_NewList  respondsToSelector:@selector(setLayoutMargins:)]) {
        [_NewList 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];
    }
} ```