iOS:如何在不使用第三方和 MVC 模式的情况下在 Swift 中创建可扩展的 TableView? [英] iOS: How to create Expandable TableView in Swift without using Third parties and MVC Pattern?

问题描述

我已经在 swift 中实现了 Tableview，但我想制作可扩展的 TableView 请给出想法..

这是Tableview的代码..

//MARK: - TableView 委托和数据源func tableView(_ tableView: UITableView, numberOfRowsInSection 部分: Int) ->整数{返回 MenuNameArray.count}func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) ->UITableViewCell {let cell = tableView.dequeueReusableCell(withIdentifier: "MenuTableViewCell", for: indexPath) as!菜单表视图单元格cell.menuNameLabel.text = NameArray[indexPath.row]返回单元格}func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {}

解决方案

Here You Go , Try This Out :-

struct ExpandableNames {var isExpanded : Bool变量名称:[字符串]}结构联系{让名称:字符串}

<块引用>

在你的班级 - >

var twoDArray = [ExpandableNames(isExpanded : true,names:["Krishna","Rishabh","Aditya","Chandan","Nipun","Navdeesh","Steve"].map{联系人(姓名:$0)}),ExpandableNames(isExpanded : true,names:["Carl","Michal","Tommy","Jennny","Vikram","Swati"].map{联系人(姓名:$0)}),ExpandableNames(isExpanded : true,names:["David","dude","dfff","dcc","daa","dee","dsss"].map{联系人(姓名:$0)}),ExpandableNames(isExpanded : true,names:[Contact(names: "Pattrick", hasFav: false)])]让 cellId = "cellID"让标识符 = "attachmentCellID"func tableView(_ tableView: UITableView, heightForHeaderInSection 部分: Int) ->CGFloat{返回 50}func numberOfSections(in tableView: UITableView) ->整数{返回 twoDArray.count}func tableView(_ tableView: UITableView, numberOfRowsInSection 部分: Int) ->整数{如果 !twoDArray[section].isExpanded{返回 0}返回 twoDArray[section].names.count}func tableView(_ tableView: UITableView, viewForHeaderInSection 部分: Int) ->界面视图?{让 btn = UIButton(类型:.system)如果(部分== 0){btn.setTitle("点击查看类", for: .normal)}否则如果(部分== 1){btn.setTitle("Tap To View Admins", for: .normal)}btn.setTitleColor(.black, for: .normal)btn.titleLabel?.font = UIFont.boldSystemFont(ofSize: 14)btn.addTarget(self, action: #selector(handleExpandClose), for: .touchUpInside)btn.backgroundColor = AppColors.greyBorderColorbtn.tag = 部分返回 btn}@objc func handleExpandClose(button : UIButton){让部分 = button.tagvar indexPaths = [IndexPath]()对于 twoDArray[section].names.indices 中的行{让 indexPath = IndexPath(row: row, section: section)indexPaths.append(indexPath)}让 isExpanded = twoDArray[section].isExpandedtwoDArray[section].isExpanded = !isExpandedbutton.setTitle(isExpanded ? "Tap To View Classes" : "Classes", for: .normal)如果是扩展{tableView.deleteRows(at: indexPaths, with: .fade)}别的{tableView.insertRows(at: indexPaths, with: .fade)}}

<块引用>

并在 cellForRowAt 中休息 -

 let contact = twoDArray[indexPath.section].names[indexPath.row]cell.textLabel?.text = contact.names

I have Implemented Tableview in swift, but I want to Make Expandable TableView Please Give the idea..

This the code for Tableview..

//MARK: - TableView Delegate and Datasource
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    return MenuNameArray.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCell(withIdentifier: "MenuTableViewCell", for: indexPath) as! MenuTableViewCell
    cell.menuNameLabel.text = NameArray[indexPath.row]
    return cell
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {

}

解决方案

Here You Go , Try This Out : -

struct ExpandableNames {
    var isExpanded : Bool
    var names : [String]
}

struct Contact {
    let names : String
}

in your Class - >

var twoDArray = [

    ExpandableNames(isExpanded : true,names:["Krishna","Rishabh","Aditya","Chandan","Nipun","Navdeesh","Steve"].map
    {
            Contact(names: $0)
    }),
    ExpandableNames(isExpanded : true,names:["Carl","Michal","Tommy","Jennny","Vikram","Swati"].map
    {
            Contact(names: $0)
    }),
    ExpandableNames(isExpanded : true,names:["David","dude","dfff","dcc","daa","dee","dsss"].map
    {
        Contact(names: $0)

    }),
    ExpandableNames(isExpanded : true,names:[Contact(names: "Pattrick", hasFav: false)])

                ]

let cellId = "cellID"
let identifier = "attachmentCellID"

func tableView(_ tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat
{
    return 50
}
func numberOfSections(in tableView: UITableView) -> Int
{

    return twoDArray.count

}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int
{
    if !twoDArray[section].isExpanded
    {
        return 0
    }
    return twoDArray[section].names.count
}
func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView?
{
    let btn = UIButton(type: .system)
    if(section == 0)
    {
        btn.setTitle("Tap To View Classes", for: .normal)
    }
    else if(section == 1)
    {
        btn.setTitle("Tap To View Admins", for: .normal)
    }

    btn.setTitleColor(.black, for: .normal)
    btn.titleLabel?.font = UIFont.boldSystemFont(ofSize: 14)
    btn.addTarget(self, action: #selector(handleExpandClose), for: .touchUpInside)
    btn.backgroundColor = AppColors.greyBorderColor
    btn.tag = section
    return btn
}
@objc func handleExpandClose(button : UIButton)
{
    let section = button.tag

    var indexPaths = [IndexPath]()
    for row in twoDArray[section].names.indices
    {
        let indexPath = IndexPath(row: row, section: section)
        indexPaths.append(indexPath)
    }

    let isExpanded = twoDArray[section].isExpanded
    twoDArray[section].isExpanded = !isExpanded


    button.setTitle(isExpanded ? "Tap To View Classes" : "Classes", for: .normal)



    if isExpanded
    {
        tableView.deleteRows(at: indexPaths, with: .fade)
    }
    else
    {
        tableView.insertRows(at: indexPaths, with: .fade)

    }


}

And Rest in cellForRowAt -

 let contact = twoDArray[indexPath.section].names[indexPath.row]
    cell.textLabel?.text = contact.names

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