如何在UITableViewCell中调用popviewController

Question

当前结构为

firstViewController -> pushViewController(secondViewController(

-UIViewController      ->filename :  secondViewController
-UITableView        

-UITableViewCell (custom cell)     ->filename :  secondTableViewCell
-UICollectionView                

-UICollectionViewCell (custom cell)      ->filename : secondCollectionViewCell

当"didSelectItemAt"在"UICollectionView"中完成时

我想从UIViewController调用"popviewcontroller"。

我想将所选项目的数据传递给firstViewController。

但我不知道怎么做

**视图控制器 **

struct cellStat{
var opened = Bool()
var title = String()
var sectionData = [ItemModel]()
}
//선물 카테고리 리스트 보여주는 모달
class GiftCategoryModalVC: UIViewController {
@IBOutlet weak var tableView: UITableView!
private var categoryTitleModels: [ItemModel] = []
private var giftItemModels: [ItemModel] = []
private var titleCellData: [cellStat] = []
//LIFE CYCLE
override func viewDidLoad() {
super.viewDidLoad()
tableView.delegate = self
tableView.dataSource = self
tableView.register(UINib(nibName: GiftCategoryTBCell.reusableIdentifier, bundle: nil), forCellReuseIdentifier: GiftCategoryTBCell.reusableIdentifier)
tableView.register(UINib(nibName: GiftCategoryListTBCell.reusableIdentifier, bundle: nil), forCellReuseIdentifier: GiftCategoryListTBCell.reusableIdentifier)
//get gift categofy title
GiftPageAPIService.shared.selectCode(code: "CD005") { (itemModels) in
self.categoryTitleModels = itemModels
itemModels.forEach { (itemModel) in
self.titleCellData.append(cellStat(opened: false, title: itemModel.codeNm!, sectionData: []))
}
self.tableView.reloadData()
}
setupLayout()
}
//LAYOUT
fileprivate func setupLayout(){
setNavbar()
}
fileprivate func setNavbar(){
self.navigationItem.leftBarButtonItem = UIBarButtonItem(image: #imageLiteral(resourceName: "icon_arrow_left"), style: UIBarButtonItemStyle.plain, target: self, action: #selector(handleEndButton))
self.navigationController?.navigationBar.barTintColor = UIColor.init(hex: 0xececec)
self.navigationController?.navigationBar.tintColor = UIColor.init(hex: 0x979797)
}

//MAKR:- ACTION
@objc func handleEndButton(){
self.navigationController?.popViewController(animated: true)
}
}


extension GiftCategoryModalVC: UITableViewDelegate, UITableViewDataSource{
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
if titleCellData[section].opened == true{
return 2
}else{
return 1
}
}
func numberOfSections(in tableView: UITableView) -> Int {
return titleCellData.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
if indexPath.row == 0{
let cell = tableView.dequeueReusableCell(withIdentifier: GiftCategoryTBCell.reusableIdentifier, for: indexPath) as! GiftCategoryTBCell
cell.setCategotyNm = categoryTitleModels[indexPath.section].codeNm
if titleCellData[indexPath.section].opened == true{
cell.setImgView = UIImage(named: "arrow_up")
}else{
cell.setImgView = UIImage(named: "arrow_down")
}
return cell
}else{
//this cell is call tableCell
let cell = tableView.dequeueReusableCell(withIdentifier: GiftCategoryListTBCell.reusableIdentifier, for: indexPath) as! GiftCategoryListTBCell
cell.setItems = titleCellData[indexPath.section].sectionData
return cell
}
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
if indexPath.row == 0{
if titleCellData[indexPath.section].opened == true{
titleCellData[indexPath.section].opened = false
let sections = IndexSet.init(integer: indexPath.section)
tableView.reloadSections(sections, with: .automatic)
}else{
titleCellData[indexPath.section].opened = true
GiftPageAPIService.shared.selectCode(code: categoryTitleModels[indexPath.section].codeCd!) { (items) in
self.titleCellData[indexPath.section].sectionData = items
let sections = IndexSet.init(integer: indexPath.section)
tableView.reloadSections(sections, with: .automatic)
}
}
}
}
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
if indexPath.row == 0{
return 50
}else{
let cellHeight: Int = (titleCellData[indexPath.section].sectionData.count + 2) / 3
return self.view.frame.height * 0.24 * CGFloat(cellHeight)
}
}
}

**表视图单元格 **

class GiftCategoryListTBCell: UITableViewCell {
@IBOutlet weak var collectionView: UICollectionView!
var items: [ItemModel]?
var category: ItemModel?
var setCategory: ItemModel?{
didSet{
self.category = setCategory!
getCategoryData()
}
}
var setItems: [ItemModel]?{
didSet{
self.items = setItems!
collectionView.reloadData()
}
}

let flowlayout = UICollectionViewFlowLayout()
override func awakeFromNib() {
super.awakeFromNib()
collectionView.delegate = self
collectionView.dataSource = self
collectionView.register(UINib(nibName: GiftItemCVCell.reusableIdentifier, bundle: nil), forCellWithReuseIdentifier: GiftItemCVCell.reusableIdentifier)
setupLayout()
}
override func setSelected(_ selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
}
//MARK:- LAYOUT
fileprivate func setupLayout(){
collectionView.backgroundColor = UIColor.init(hex: 0xf7f7f7)
collectionView.isScrollEnabled = false
}
fileprivate func getCategoryData(){
GiftPageAPIService.shared.selectCode(code: (category?.codeCd)!) { (items) in
self.items = items
self.collectionView.reloadData()
}
}
}

extension GiftCategoryListTBCell: UICollectionViewDataSource,UICollectionViewDelegate{
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
if items == nil{
return 0
}else{
return (items?.count)!
}
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: GiftItemCVCell.reusableIdentifier, for: indexPath) as! GiftItemCVCell
cell.setItem = items?[indexPath.item]
return cell
}
func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
/*
I tried to do the work here.
*/
}
}

extension GiftCategoryListTBCell: UICollectionViewDelegateFlowLayout{
func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, insetForSectionAt section: Int) -> UIEdgeInsets {
return UIEdgeInsets(top: contentView.frame.width * 0.07, left: contentView.frame.width * 0.07, bottom: contentView.frame.width * 0.07, right: contentView.frame.width * 0.07)
}
func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, minimumLineSpacingForSectionAt section: Int) -> CGFloat {
return contentView.frame.width * 0.03
}
func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
let width = (contentView.frame.width) * 0.25
return CGSize(width: width, height: width * 1.5)
}
}

Answer 1

试试这个：

let window = UIApplication.shared.keyWindow
window?.topMostWindowController?.navigationController?.popViewController(animated: true)

Answer 2

你的意思是这样？

在表视图单元格文件中创建协议

class myTableCell: UITableViewCell{
var myString = "mystring"
var delegate = myNewDelegate?
func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
delegate?.didSelect(text: self.myString)
} 
}

protocol myNewDelegate {
func didSelect(text: String)
}

这位于表单元格所在的视图控制器类中。

class MyTableViewController: UITableViewController, myNewDelegate{
var stringToPass = String()
func didSelectText(text: String){
stringToPass = text
self.performSegue(withIdentifier: "editProfileSegue", sender: self)
}
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if segue.identifier == "editProfileSegue"{
let viewcontroller = segue.destination as! FirstViewController
viewcontroller.myPassedString = self.stringToPass
}
}
}

然后 id 接收类

class FirstViewController: UIViewController{
var myPassedString = String()
}

Answer 3

我明白你的意思。

如果您想将控制器弹出到 tablecell 中的上一个控制器，只是为了获得其控制单元格并尝试弹出的视图控制器，如果您尝试此方法，为什么不覆盖视图控制器中的委托功能？可能有点难以阅读代码，但很有用，您可以使用

self.navigationcontroller?.popViewController

如果您已经使用视图控制器委托另一个表视图，则只是为了判断委托函数中的表视图名称。

func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
if tableView == blah blah 
{
do what you want
}
}

如果需要在不同的 viewController 之间传递数据，特别是将数据传递给 pre-viewController 你需要编写委托，或者需要__block回调。