Swift 学习之 tableView 左滑 “删除”、“置顶”以及“群设置”等按钮

---恢复内容开始---

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
}

 

---恢复内容结束---