How to pass data between custom table view cells? - ios

Question

I have two custom table views (not table view controller) with custom
cells. I want to select a second cell from MainViewcontroller
and selected
title and price of cell info pass to the second view as
DetailViewController's first and second index labels.
This is my MainViewController.swift
Edit: Here is the answer
import UIKit
class MainViewController: UIViewController, UITableViewDataSource, UITableViewDelegate,
UICollectionViewDelegate, UICollectionViewDataSource, UICollectionViewDelegateFlowLayout {
#IBOutlet weak var searchBar: UISearchBar!
#IBOutlet weak var mainTableView: UITableView!
var imageNames = [ImageNames]()
var searchFoods: [String]!
var priceFood: [Double]!
var searching = false
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
self.tabBarController?.tabBar.isHidden = false
}
override func viewDidLoad() {
super.viewDidLoad()
self.navigationController?.navigationBar.isHidden = true
let foodCell = Food(name: ["Hamburger big mac",
"Patates",
"Whopper",
"Steakhouse"], price: [15.0, 20.0, 25.0, 30.0])
searchBar.delegate = self
searchFoods = foodCell.name
priceFood = foodCell.price
imageNames = [
ImageNames(name: "images"),
ImageNames(name: "unnamed"),
ImageNames(name: "unnamed")
]
}
func numberOfSections(in tableView: UITableView) -> Int {
return 2
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return section == 0 ? 1 : searchFoods.count
// return section == 0 ? 1 : foodNames.count
}
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return indexPath.section == 0 ? 130 : 65
}
func tableView(_ tableView: UITableView, estimatedHeightForRowAt indexPath: IndexPath) -> CGFloat {
return indexPath.section == 0 ? 100 : 65
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
if indexPath.section == 0 {
let cell = tableView.dequeueReusableCell(withIdentifier: "MainFoodTableViewCell", for: indexPath) as! MainFoodTableViewCell
cell.mainFoodCollectionView.delegate = self
cell.mainFoodCollectionView.dataSource = self
cell.mainFoodCollectionView.reloadData()
cell.mainFoodCollectionView.tag = indexPath.row
return cell
} else {
let cell = tableView.dequeueReusableCell(withIdentifier: "CellForFood", for: indexPath) as! MainFoodTitleTableViewCell
cell.titleLabel?.text = searchFoods[indexPath.row]
cell.priceLabel?.text = priceFood[indexPath.row].description
return cell
}
}
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if segue.identifier == "cellForFoodSegue" {
if let destinationViewController = segue.destination as? DetailViewController
{
let indexPath = self.mainTableView.indexPathForSelectedRow!
var foodNameArray: [String]
var foodPriceArray: [Double]
foodNameArray = [searchFoods[indexPath.row]]
foodPriceArray = [priceFood[indexPath.row]]
destinationViewController.detailFoodName = foodNameArray
destinationViewController.detailFoodPrice = foodPriceArray
}
}
}
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return imageNames.count
}
//MARK:- collection view cell size
func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
let width = UIScreen.main.bounds.width
return CGSize(width: width, height: 130)
}
//MARK:- //collection view cell data
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "MainFoodCollectionViewCell", for: indexPath) as! MainFoodCollectionViewCell
let img = imageNames[indexPath.row]
cell.mainFoodImage.image = UIImage(named: img.name)
return cell
}
}
//MARK:- SearchBar data
extension MainViewController : UISearchBarDelegate {
func searchBarTextDidBeginEditing(_ searchBar: UISearchBar) {
self.searchBar.showsCancelButton = true
mainTableView.reloadData()
}
func searchBarCancelButtonClicked(_ searchBar: UISearchBar) {
mainTableView.reloadData()
searchBar.showsCancelButton = false
searchBar.text = ""
searchBar.resignFirstResponder()
}
func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) {
searchFoods = searchText.isEmpty ? searchFoods : searchFoods.filter { (item: String) -> Bool in
return item.range(of: searchText, options: .caseInsensitive, range: nil, locale: nil) != nil
}
mainTableView.reloadData()
}
}
Edit: Here is my DetailViewController
import UIKit
class DetailViewController: UIViewController {
#IBOutlet weak var foodTitle: UILabel!
#IBOutlet weak var foodSubTitle: UILabel!
#IBOutlet weak var foodPiece: UILabel!
#IBOutlet weak var foodPrice: UILabel!
#IBOutlet weak var drinkPicker: UITextField!
#IBOutlet weak var menuPieceStepper: UIStepper!
var drinkPickerView = UIPickerView()
var selectDrinkType: [String] = []
var detailFoodName : [String] = []
var detailFoodPrice : [Double] = [0.0]
let foods = Food(name: ["Hamburger big mac",
"Patates",
"Whopper",
"Steakhouse"], price: [15.0, 20.0, 25.0, 30.0])
#IBAction func foodPieceStepper(_ sender: Any) {
}
#objc func foodPieceChangeStepper() {
let res = menuPieceStepper.value + foods.price.first!
foodPrice.text = "\(res)"
}
#IBAction func addBasket(_ sender: Any) {
let destinationVC = MyCartViewController()
destinationVC.fromDetailFoodNames = foods.name
destinationVC.fromDetailFoodPrices = foods.price
dismiss(animated: true)
}
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if(segue.identifier == "addToCartSegue") {
if let addToCartVC = segue.destination as? MyCartViewController {
addToCartVC.fromDetailFoodNames = [foodTitle.text]
addToCartVC.fromDetailFoodPrices = foods.price
}
}
}
override func viewDidLoad() {
super.viewDidLoad()
menuPieceStepper.value = 0.0
menuPieceStepper.minimumValue = 0.0
menuPieceStepper.maximumValue = 30.0
menuPieceStepper.stepValue = foods.price.first!
menuPieceStepper.addTarget(self, action: #selector(foodPieceChangeStepper), for: .valueChanged)
drinkPickerView.delegate = self
drinkPicker.inputView = drinkPickerView
selectDrinkType = ["Ayran", "Kola", "Su", "Fanta", "Şalgam", "Sprite"]
foodTitle.text = detailFoodName.description
foodPrice.text = detailFoodPrice.description
self.navigationController?.navigationItem.title = "Sipariş Detayı"
let tapGesture = UITapGestureRecognizer(target: self, action: #selector(self.dismissKeyboard (_:)))
self.view.addGestureRecognizer(tapGesture)
}
#objc func dismissKeyboard (_ sender: UITapGestureRecognizer) {
drinkPicker.resignFirstResponder()
}
override func viewWillAppear(_ animated: Bool) {
self.navigationController?.navigationBar.isHidden = false
}
override func viewWillDisappear(_ animated: Bool) {
self.navigationController?.navigationBar.isHidden = true
}
}
extension DetailViewController: UIPickerViewDelegate, UIPickerViewDataSource {
func numberOfComponents(in pickerView: UIPickerView) -> Int {
return 1
}
func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
return selectDrinkType.count
}
func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
return selectDrinkType[row]
}
func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
let selectedDrink = selectDrinkType[row]
drinkPicker.text = selectedDrink
}
}

Answer 1

Aren't you looking for prepare(for segue: sender:) method? Usually you need to bind a cell prototype to a detail view with a segue, and when the cell is selected the segue is followed just after that method is called to prepare data injection to the detail view.