Htykuut

I am making an app with a scene that contains a tableview. Each cell in the table view contains a rating control (made up of 5 stars) and a label. At the click of a button I would like to print all of the labels as well as the number of stars that user has clicked from the rating controls from the entire table view. to the console.

How can I do this?

Here is my tableview(_:cellForRowAt:) method

override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {

    // Configure the cell

    // Table view cells are reused and should be dequeued using a cell identifier

    let cellId = "cell"



    guard let cell = tableView.dequeueReusableCell(withIdentifier: cellId, for: indexPath) as? MatchingTableViewCell else {

        fatalError("The dequeued cell is not an instacne of MatchingTableViewCell")

    }



    // Fetches the appropriate match for the data source layout.

    let match = matching[indexPath.row]



    cell.nameLabel.text = match.name

    cell.photoImagView.image = match.photo

    cell.ratingControl.rating = match.rating



    return cell

}

Data model object is an array of structs of Match objects:

import Foundation

import UIKit

import os.log



class Match: NSObject, NSCoding {

// MARK: Properties

var name: String

var photo: UIImage?

var rating: Int





// MARK: Archiving Paths

static let DocumentsDirectory = FileManager().urls(for: .documentDirectory, in: .userDomainMask).first

static let ArchiveURL = DocumentsDirectory?.appendingPathComponent("matching")



// MARK: Types

struct PropertyKey {

    static let name = "name"

    static let photo = "photo"

    static let rating = "rating"

}



init?(name: String, photo: UIImage?, rating: Int) {

    // The name must not be empty

    guard !name.isEmpty else{

        return nil

    }

    // The rating must be between 0 and 5 inclusively

    guard (rating >= 0) && (rating <= 5) else {

        return nil

    }

    // Initialize stored properties

    self.name = name

    self.photo = photo

    self.rating = rating

}



override var description : String {

    return "rating (self.rating) n"

}

// MARK: NSCoding

func encode(with aCoder: NSCoder) {

    aCoder.encode(name, forKey: PropertyKey.name)

    aCoder.encode(photo, forKey: PropertyKey.photo)

    aCoder.encode(rating, forKey: PropertyKey.rating)



}



required convenience init?(coder aDecoder: NSCoder) {

    // The name is required if we cannot decode a name string, the init should fail

    guard let name = aDecoder.decodeObject(forKey: PropertyKey.name) as? String else{

        os_log("Unable to decode the name for a Match object", log: OSLog.default, type: .debug)

        return nil

    }

    // Because the photo is an optional property of Match, just use conditional cast.

    let photo = aDecoder.decodeObject(forKey: PropertyKey.photo) as? UIImage

    let rating = aDecoder.decodeObject(forKey: PropertyKey.rating)



    // Must call designated init

    self.init(name: name, photo: photo, rating: rating as! Int)



}

}

RatingControl.swiift:

import UIKit



@IBDesignable class RatingControl: UIStackView {







// MARK: Properties

private var ratingButtons = [UIButton]()

var rating = 0 {

    didSet {

        updateButtonSelectionStates()

    }

}



@IBInspectable var starSize: CGSize = CGSize(width: 44.0, height: 44.0) {// Defines size of buttons/

    didSet{

        setupButtons()

    }

}



@IBInspectable var starCount: Int = 5 {// Defines number of buttons

    didSet{

        setupButtons()

    }

}



// MARK: Initialization

override init(frame: CGRect) {

    super.init(frame: frame)

    setupButtons()

}



required init(coder: NSCoder) {

    super.init(coder: coder)

    setupButtons()

}



      // MARK: Private Methods

private func setupButtons(){





    // Clear any existing buttons

    for button in ratingButtons{

        removeArrangedSubview(button)

        button.removeFromSuperview()

    }

    ratingButtons.removeAll()



    // Load Button Images

    let bundle = Bundle(for: type(of: self))

    let filledStar = UIImage(named: "filledStar", in: bundle, compatibleWith: self.traitCollection)

    let emptyStar = UIImage(named: "emptyStar", in: bundle, compatibleWith: self.traitCollection)

    let highligtedStar = UIImage(named: "highlightedStar", in: bundle, compatibleWith: self.traitCollection)



    for _ in 0..<starCount {

    // Create the button

    let button = UIButton()



    // Set the button images

        button.setImage(emptyStar, for: .normal)

        button.setImage(filledStar, for: .selected)

        button.setImage(highligtedStar, for: .highlighted)

        button.setImage(highligtedStar, for: [.highlighted, .selected])



    // Adding constraints

    button.translatesAutoresizingMaskIntoConstraints = false // disables buttons automatically generated constraints

    button.heightAnchor.constraint(equalToConstant: starSize.height).isActive = true // defines height

    button.widthAnchor.constraint(equalToConstant: starSize.width).isActive = true // defines width



    //Setup the button action

    button.addTarget(self, action: #selector(RatingControl.ratingButtonTapped(button:)), for: .touchUpInside)



    // Add button to stack

    addArrangedSubview(button)



    // Add the new button to the rating button Array

    ratingButtons.append(button)

    }

    updateButtonSelectionStates()

}



// MARK: Button Action

@objc func ratingButtonTapped(button:UIButton){



    guard let index = ratingButtons.index(of: button) else {

        fatalError("The button, (button), is not in the ratingButtons array: (ratingButtons)")

    }

    // Calculate the rating of the selected button

    let selectedRating = index + 1

    if selectedRating == rating { // If the selected star represents the current rating, reset the rating to 0

        rating = 0

    } else{

        // Otherwise set the rating to the selected star

        rating = selectedRating

    }

}

private func updateButtonSelectionStates() { // Update buttons appearance

    for (index, button) in ratingButtons.enumerated() {

        // If the index of a button is less than the rating, that button should be selected

        button.isSelected = index < rating

    }

}

}

You've got this wrong. Your table view does not save data, it displays it. You want to have a data model that holds the values you display from your table view. That's what feeds your tableView dataSource methods. Often it will be an array of structs.

You want to print the contents of your table view's data model.

Edit:

Now that you've provided that info we can help you.

Add CustomStringConvertible conformance to your data model:

class Match: NSObject, NSCoding, CustomStringConvertible  {

The only requirement for CustomStringConvertible is that you provide a computed property description that's a String:

var description: String {

   return "Match(name:(name),rating:(rating))"

}

Then in your button action

@IBAction func logInfo(sender: UIButton) {

    matching.forEach { print($0) }

}

Since your Match class now conforms to CustomStringConvertible, you can print Match objects directly.

Or if you want indexes:

@IBAction func logInfo(sender: UIButton) {

    matching.enumerated()forEach { print(String(format:"%02l", $0.0) + ": " + $0.1) }

}