Multi tool use

How do I call a different function for each TextField in a UITableView (Swift)?

I have a UITableView and my prototype cell consists of a label and a TextField. I also have a class MyClass that contains functions func1, func2, fun3, ... I have several ViewControllers that use the same tableViewCell prototype. Each viewController will have an instance of MyClass, called inst1, inst2, and inst3. When I enter text into FirstViewController's TableView I want each row to call a function from the instance of MyClass that corresponds to the row.

So when I enter text into row 1 on the FirstViewController I want to pass the data entered into the textField into func1 of inst1. When data is entered into row 2 of FirstViewController I want the data in the textfield to be passed into func2 of inst1. And so on and so forth down the rows.

I am very new to this and would really appreciate some help figuring out how to do this. Let me know if that doesn't make sense and I can try to rephrase it. I really need help with this. Thanks in advance!

*Updated question to show my code

Below is my Code:
FirstViewController.swift

extension FirstViewController: MyCellDelegate {
func MyCell(_ cell: UITableViewCell, didEnterText text: String) {
if let indexPath = tableView.indexPath(for: cell) {
if (indexPath.hashValue == 0) {
inst1.func1(one: text)
}
if (indexPath.hashValue == 1) {
inst1.func2(two: text)
}
}
totalText.text = inst1.getMyTotal()
}
}

import UIKit

class FirstViewController: UIViewController, UITableViewDataSource, UITableViewDelegate {
let inst1 = MyClass()
@IBOutlet weak var totalText: UILabel!
@IBOutlet weak var tableView: UITableView!

func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return 11
}

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "myTableCell") as! TableViewCell
let text = cell.cellData[indexPath.row]
cell.myTextField.tag = indexPath.row
cell.delegate = self
cell.myLabel.text = text
cell.myTextField.placeholder = text
return cell
}

func numberOfSections(in tableView: UITableView) -> Int {
return 1
}

override func viewDidLoad() {
super.viewDidLoad()
tableView.dataSource = self
tableView.delegate = self
}

override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
}


TableViewCell.swift

import UIKit
protocol MyCellDelegate: class {
func MyCell(_ cell: UITableViewCell, didEnterText text: String)
}

class TableViewCell: UITableViewCell {
weak var delegate: MyCellDelegate?

public var cellData: [String] = ["1","2","3","4","5","6","7","8","9","10","11"]

@IBOutlet weak var myLabel: UILabel!

@IBOutlet weak var myTextField: UITextField!

override func awakeFromNib() {
super.awakeFromNib()
}

override func setSelected(_ selected: Bool, animated: Bool) {
}
}


When I set a breakpoint in the FirstViewController extension it never runs that code.

1 Answer
1

In WillDisplayCell add the tag to the UITextField. Also create a protocol to notify the Corrosponding viewController and set itself as the delegate here.

func tableView(_ tableView: UITableView, willDisplay cell: UITableViewCell, forRowAt indexPath: IndexPath) {
let cell = tableView.dequeueReusableCell(withIdentifier: "reuseIdentifier")
cell.textField.tag = indexPath.row
cell.delegate = self
}


The protocol in your cell class will look something like this

protocol MyCellDelegate: class {
func MyCell(_ cell: UITableViewCell, didEnterText text: String)
}

class MyCell: UITableViewCell, UITextFieldDelegate {
weak var delegate: MyCellDelegate?
override fun awakeFromNib() {
super.awakeFromNib()
textField.delegate = self
}
//All the remaining code goes here


func textFieldShouldReturn(_ textField: UITextField) -> Bool { //delegate method
textField.resignFirstResponder()
delegate?.MyCell(self, didEnterText: textField.text! )
return true
}
}


Now again in your FirstViewController which has conformed to be its delegate do this

extension FirstViewController: MyCellDelegate {
func MyCell(_ cell: UITableViewCell, didEnterText text: String) {
if let indexPath = tableView.indexPathForCell(cell) {
// call whichever method you want to call based on index path
}
}


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