how to call popviewcontroller in UITableViewCell - ios

Question

The current structure is
firstViewController -> pushViewController(SecondViewController)
-UIViewController ->filename : secondViewController
-UITableView
-UITableViewCell (custom cell) ->filename : secondTableViewCell
-UICollectionView
-UICollectionViewCell (custom cell) ->filename : secondCollectionViewCell
When 'didSelectItemAt' is done in the 'UICollectionView'
I would like to call the 'popviewcontroller' from UIViewController.
And I want to pass the data on the selected item to firstViewController.
but i don't know how
** ViewController **
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)
}
}
}
** TableViewCell **
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

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

Answer 2

You mean something like this?
Create a protocol in the tableviewcell file
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)
}
This goes in the view controller class that the table cell is in.
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
}
}
}
And then id the receiving class
class FirstViewController: UIViewController{
var myPassedString = String()
}

Answer 3

I understand what your mean.
If you want to pop your controller to previous controller in tablecell just to get its viewcontroller which control the cell and try to pop and if you try this method, why not override delegate func in your viewcontroller ?May a little bit hard to read the code, but useful, and you can use
self.navigationcontroller?.popViewController
If you have already use the viewcontroller to delegate the other tableview, just to judge the tableview name in your delegate func
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
if tableView == blah blah
{
do what you want
}
}
And if you need to pass the data between the different viewController especially pass the data to pre-viewController you need to write delegate, or need to __block callback.