How to make data transition between table view cells with where button out of table view? - ios

Question

I have two custom table views. I need to pass first and second cell datas of DestinationTableView to first cell of MyCartTableView. How can I make transition between this two table view cells with outside of tableView.
I did tableView.indexPathForSelectedRow but this time I need to make with UIButtonoutside of tableView.
Below triggered with tableView 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 = foodNames[indexPath.row]
foodPriceArray = foodPrices[indexPath.row].purchaseAmount
destinationViewController.detailFoodName = foodNameArray
destinationViewController.detailFoodPrice = foodPriceArray
}
}
}
I tried below code but I did not success passing data with button.
#IBAction func addBasket(_ sender: Any) {
}
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if(segue.identifier == "addToCartSegue") {
if let addToCartVC = segue.destination as? MyCartViewController {
let selectedCell = sender as! UITableViewCell
let indexPath = self.detailTableView.indexPath(for: selectedCell)
var foodNameArray: String
var foodPriceArray: Double
foodNameArray = foodNames[indexPath.row]
foodPriceArray = prices[indexPath.row].purchaseAmount
addToCartVC.fromDetailFoodName = foodNameArray
addToCartVC.fromDetailFoodPrice = prices[(indexPath?.row)!].purchaseAmount
}
}
}
Belows my MyViewController codes. Which is my added objects when tapped to addBasket button
class MyCartViewController: UIViewController, UITableViewDataSource, UITableViewDelegate {
var fromDetailFoodName: [String?] = []
var fromDetailFoodPrice = Double()
var nameLabel = MyCartTableViewCell()
#IBOutlet weak var myCartTableView: UITableView!
#IBOutlet weak var totalPriceLabel: UILabel!
let foodNames = [
"Hamburger big mac",
"Cemal",
"Emre",
"Memo"
]
//TODO-: Delete my cart
#IBAction func deleteMyCart(_ sender: Any) {
}
//TODO: - Approve my cart
#IBAction func approveCart(_ sender: Any) {
}
override func viewDidLoad() {
super.viewDidLoad()
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return section == 0 ? 1 : foodNames.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "myCartCell", for: indexPath) as! MyCartTableViewCell
cell.myCartFoodNameLabel?.text = fromDetailFoodName.description
cell.myCartFoodPriceLabel?.text = "\(fromDetailFoodPrice)₺"
return cell
}
}

Answer 1

You should get the index path of the data you want to pass in func addBasket(_ sender: Any).
For example, you can save index path as a property that referenced in class.
class StartViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {
var selectedIndexPath: IndexPath?
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
selectedIndexPath = indexPath
}
#IBAction func addBasket(_ sender: Any) {
if let indexPath = selectedIndexPath {
let destinationVC = MyCartViewController()
destinationVC.detailFoodName = foodNames[indexPath.row]
destinationVC.detailFoodPrice = foodPrices[indexPath.row].purchaseAmount
}
}
}
In MyCartViewController which is destination VC.
class MyCartViewController: UIViewController, UITableViewDataSource, UITableViewDelegate {
var fromDetailFoodNames: [String?] = []
var fromDetailFoodPrices: [Double?] = []
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
if indexPath.section == 1 && indexPath.last! <= fromDetailFoodPrices.indices.last! {
let cell = myCartTableView.dequeueReusableCell(withIdentifier: "myCartCell", for: indexPath) as! MyCartTableViewCell
let name = fromDetailFoodNames[indexPath.row]?.description ?? ""
let price = fromDetailFoodPrices[indexPath.row]
cell.myCartFoodNameLabel?.text = name
cell.myCartFoodPriceLabel?.text = "\(price)₺"
return cell
}
}
}
BTW, for better coding, you can implement OOP concept in your code. detailFoodName and detailFoodPrice should be in ONE object. Besides, var foodNameArray: String naming could be confusing. Rename it as var foodName: String would be better.