第一种

- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath {
    //第二组可以左滑删除
    if (indexPath.section == 2) {
        return YES;
    }
    
    return NO;
}
 
// 定义编辑样式
- (UITableViewCellEditingStyle)tableView:(UITableView *)tableView editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath {
    return UITableViewCellEditingStyleDelete;
}
 
// 进入编辑模式，按下出现的编辑按钮后,进行删除操作
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath {
    if (editingStyle == UITableViewCellEditingStyleDelete) {
        
        if (indexPath.section == 2) {
            
            //取消该演员的申请
            NSString *user_no = [self.actor_cpllaboredArray[indexPath.row] valueForKey:@"user_no"];
            [self fetch_api_Recruit_withdraw:user_no];
            
        } 
    }
}
 
// 修改编辑按钮文字
- (NSString *)tableView:(UITableView *)tableView titleForDeleteConfirmationButtonForRowAtIndexPath:(NSIndexPath *)indexPath {
    return @"删除";
}

第二种,iOS11之后才有的

- ( UISwipeActionsConfiguration *)tableView:(UITableView *)tableView trailingSwipeActionsConfigurationForRowAtIndexPath:(NSIndexPath *)indexPath {
    //删除
    UIContextualAction *deleteRowAction = [UIContextualAction contextualActionWithStyle:UIContextualActionStyleDestructive title:@"delete" handler:^(UIContextualAction * _Nonnull action, __kindof UIView * _Nonnull sourceView, void (^ _Nonnull completionHandler)(BOOL)) {
        [self.titleArr removeObjectAtIndex:indexPath.row];
        completionHandler (YES);
        [self.tableView reloadData];
    }];
    deleteRowAction.image = [UIImage imageNamed:@"删除"];
    deleteRowAction.backgroundColor = [UIColor redColor];
    
    UISwipeActionsConfiguration *config = [UISwipeActionsConfiguration configurationWithActions:@[deleteRowAction]];
    return config;
}