How can I use prepare for segue in a UITableViewCell class - swift

Question

I want send data between UITableViewCell and UIViewController
I have a list of address, in my cell I have a button (edit) and I want to send all the information about the address in the cell
#IBOutlet weak var address: UILabel!
#IBOutlet weak var rfc: UILabel!
override func awakeFromNib() {
super.awakeFromNib()
}
override func setSelected(_ selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
}
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if segue.destination is ContainerVC{
let vc = segue.destination as? ContainerVC
vc.address = self.address.text
}
}
Method does not override any method from its superclass

Answer 1

Let's use segue inside your controller which contains the tableview which uses your UITableViewCell
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if segue.identifier == segueIdentifier,
let destination = segue.destination as? ContainerVC,
let selectedIndex = tableView.indexPathForSelectedRow?.row
{
destination.address = self.addresses[selectedIndex].text
self.navigationController?.pushViewController(destination, animated: true) // For example
}
}

Answer 2

To pass data from cell Class to Controller Class use delegate methods on edit action.
Define call back delegate method in UITableViewCell class:
var callBack: ((NSDictionary) -> (Void))?
Use DS as per your need.
On Edit Action call delegate method and pass the data
#IBAction func editAction(_ sender: Any) {
callBack?(dictionary)
}
In cellForRowAt indexPath call delegate method with cell object
cell.callBack = { (currentData : NSDictionary)
in
// Perform Action on data
}
To Pass Data from Controller class to cell class you can simply define a method in cell class and can call in cellForRowAt indexPath.
Define SetData(dictionary) in cell class
In View Controller
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableViewOutlet.dequeueReusableCell(withIdentifier: "CellName", for: indexPath) as! CellClassName
cell.SetData(dict)
return cell
}

Answer 3

You need to do this from your UIViewController in which the UITableViewCell is implemented:
Assuming you have an array to populate your UITableView, the code would be something like:
import UIKit
class FirstViewController: UIViewController {
#IBOutlet weak var tableView: UITableView!
var addresses = [String]()
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if segue.identifier == "showAddressDetail" {
if let secondViewController = segue.destination as? SecondViewController {
secondViewController.address = sender as! String
}
}
}
}
extension FirstViewController: UITableViewDataSource, UITableViewDelegate {
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return self.addresses.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell: YourTableViewCell = tableView.dequeueReusableCell(withIdentifier: "YourTableViewCell", for: indexPath) as! YourTableViewCell
cell.address = self.addresses[indexPath.row]
cell.delegate = self
return cell
}
Since you have to call your function from an action triggered by a button on your UITableViewCell, you can implement a protocol on your cell:
import UIKit
protocol YourTableViewCellDelegate: class {
func selectedAddress(address: String)
}
class YourTableViewCellDelegate: UITableViewCell {
weak var delegate: YourTableViewCellDelegate?
var address: String
}
And in your button action, call your delegate method like this:
#IBAction func selectAddress() {
self.delegate?.selectedAddress(address: self.address)
}
This will trigger the delegate on your UIViewController. To handle the call, don't forget to assign your cell delegate to your view controller and implement your cell delegate in your controller:
extension FirstViewController: YourTableViewCellDelegate {
func selectedAddress(address: String) {
// Do stuff with the selected address
}
}