iOS 左滑按钮(UITableViewRowAction)显示图片

func tableView(_ tableView: UITableView, editActionsForRowAt indexPath: IndexPath) -> [UITableViewRowAction]? {
        let deleteAction = UITableViewRowAction(style: .default, title: title) { (action, indexpath) in
        }
       deleteAction.backgroundColor = UIColor(patternImage: UIImage(named: "IMAGE_NAME"))
        return [deleteAction]
    }

 func tableView(_ tableView: UITableView, editActionsForRowAt indexPath: IndexPath) -> [UITableViewRowAction]? {

        let delete = UITableViewRowAction(style: .normal, title: "删除") { _, index in
        }
        delete.backgroundColor = UIColor(valueRGB: 0xF2463D, alpha: 1.0)
        return [delete]
    }

    @available(iOS 11.0, *)
    func tableView(_ tableView: UITableView, trailingSwipeActionsConfigurationForRowAt indexPath: IndexPath) -> UISwipeActionsConfiguration? {

        let deleteAction = UIContextualAction(style: .normal, title:  nil, handler: { (ac:UIContextualAction, view:UIView, success:(Bool) -> Void) in

            debugPrint("Delete tapped")

            success(true)
        })

        deleteAction.image = UIImage(named: "integral_icon_delect")
        deleteAction.backgroundColor = UIColor(valueRGB: 0xF2463D, alpha: 1.0)

        return UISwipeActionsConfiguration(actions: [deleteAction])
    }