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效果图：

 

设置这个其实很简单...只要实现 tableView 的一个代理，即：

@available(iOS 8.0, *)    optional public func tableView(_ tableView: UITableView, editActionsForRowAt indexPath: IndexPath) -> [UITableViewRowAction]? // supercedes -tableView:titleForDeleteConfirmationButtonForRowAtIndexPath: if return value is non-nil

看到出来，这个方法是 iOS 8.0之后才提供的

 

具体的使用：

@objc(tableView:editActionsForRowAtIndexPath:) func tableView(_ tableView: UITableView, editActionsForRowAt indexPath: IndexPath) -> [UITableViewRowAction]? {                let model: MessageMainModel = self.showList?.object(at: indexPath.row) as! MessageMainModel                let list = model.editList as NSArray                var mActionArray = [UITableViewRowAction]()        for index in 0...list.count - 1 {            let dic = list.object(at: index) as! NSDictionary                        let tag = dic.object(forKey: "tag") as! Int                        if tag == 1 {                //删除                let deleteAction = UITableViewRowAction(style: UITableViewRowActionStyle.destructive, title: "删除") { (deleteAction: UITableViewRowAction, indexPath: IndexPath) in                                        self.showList?.removeObject(at: indexPath.row)                    self.tableView.reloadData()                    print("\(indexPath.row) == 删除")                }                deleteAction.backgroundColor = .red                mActionArray.append(deleteAction)                            }else if tag == 2 {                let setupAction = UITableViewRowAction(style: UITableViewRowActionStyle.destructive, title: "置顶") { (deleteAction: UITableViewRowAction, indexPath: IndexPath) in                                        let model: MessageMainModel = self.showList?.object(at: indexPath.row) as! MessageMainModel                                        self.showList?.removeObject(at: indexPath.row)                    self.showList?.insert(model, at: 0)                    self.tableView.reloadData()                    print("\(indexPath.row) == 置顶")                }                setupAction.backgroundColor = appDefaultColor                mActionArray.append(setupAction)                            }else if tag == 3 {                let groupSetting = UITableViewRowAction(style: UITableViewRowActionStyle.destructive, title: "群设置") { (deleteAction: UITableViewRowAction, indexPath: IndexPath) in                                        print("\(indexPath.row) == 群设置")                }                groupSetting.backgroundColor = UIColor.lightGray                                mActionArray.append(groupSetting)                            }        }                        return mActionArray}

 

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