Design the custom table view cell programatically - swift

Question

I created table view cell programmatically and set the constrains as well.It is able to display the image , firstname , lastname property into cell but when I added new label with values , it not displaying the values .
Here is the cell code .
import UIKit
class PeopleCell: UITableViewCell {
static let identifier = "PeopleCell"
let containerView:UIView = {
let view = UIView()
view.translatesAutoresizingMaskIntoConstraints = false
view.clipsToBounds = true // this will make sure its children do not go out of the boundary
return view
}()
let profileImageView:UIImageView = {
let img = UIImageView()
img.contentMode = .scaleAspectFill // image will never be strecthed vertially or horizontally
img.translatesAutoresizingMaskIntoConstraints = false // enable autolayout
img.layer.cornerRadius = 35
img.clipsToBounds = true
return img
}()
let firstnameTitleLabel:UILabel = {
let label = UILabel()
label.font = UIFont.boldSystemFont(ofSize: 20)
label.textColor = .black
label.translatesAutoresizingMaskIntoConstraints = false
return label
}()
let lastnameTitleLabel:UILabel = {
let label = UILabel()
label.font = UIFont.boldSystemFont(ofSize: 14)
label.textColor = .white
label.backgroundColor = #colorLiteral(red: 0.1764705926, green: 0.4980392158, blue: 0.7568627596, alpha: 1)
label.layer.cornerRadius = 5
label.clipsToBounds = true
label.translatesAutoresizingMaskIntoConstraints = false
return label
}()
let jobTitleLabel:UILabel = {
let label = UILabel()
label.font = UIFont.boldSystemFont(ofSize: 20)
label.textColor = .black
label.translatesAutoresizingMaskIntoConstraints = false
return label
}()
override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
super.init(style: style, reuseIdentifier: reuseIdentifier)
self.contentView.addSubview(profileImageView)
containerView.addSubview(firstnameTitleLabel)
containerView.addSubview(lastnameTitleLabel)
containerView.addSubview(jobTitleLabel)
self.contentView.addSubview(containerView)
profileImageView.centerYAnchor.constraint(equalTo:self.contentView.centerYAnchor).isActive = true
profileImageView.leadingAnchor.constraint(equalTo:self.contentView.leadingAnchor, constant:10).isActive = true
profileImageView.widthAnchor.constraint(equalToConstant:70).isActive = true
profileImageView.heightAnchor.constraint(equalToConstant:70).isActive = true
containerView.centerYAnchor.constraint(equalTo:self.contentView.centerYAnchor).isActive = true
containerView.leadingAnchor.constraint(equalTo:self.profileImageView.trailingAnchor, constant:10).isActive = true
containerView.trailingAnchor.constraint(equalTo:self.contentView.trailingAnchor, constant:-10).isActive = true
containerView.heightAnchor.constraint(equalToConstant:40).isActive = true
firstnameTitleLabel.topAnchor.constraint(equalTo:self.containerView.topAnchor).isActive = true
firstnameTitleLabel.leadingAnchor.constraint(equalTo:self.containerView.leadingAnchor).isActive = true
firstnameTitleLabel.trailingAnchor.constraint(equalTo:self.containerView.trailingAnchor).isActive = true
lastnameTitleLabel.topAnchor.constraint(equalTo:self.firstnameTitleLabel.bottomAnchor).isActive = true
lastnameTitleLabel.leadingAnchor.constraint(equalTo:self.containerView.leadingAnchor).isActive = true
lastnameTitleLabel.topAnchor.constraint(equalTo:self.firstnameTitleLabel.bottomAnchor).isActive = true
lastnameTitleLabel.leadingAnchor.constraint(equalTo:self.containerView.leadingAnchor).isActive = true
jobTitleLabel.topAnchor.constraint(equalTo:self.lastnameTitleLabel.bottomAnchor).isActive = true
jobTitleLabel.leadingAnchor.constraint(equalTo:self.containerView.leadingAnchor).isActive = true
jobTitleLabel.topAnchor.constraint(equalTo:self.lastnameTitleLabel.bottomAnchor).isActive = true
jobTitleLabel.leadingAnchor.constraint(equalTo:self.containerView.leadingAnchor).isActive = true
}
required init?(coder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
func configureCell(firstName: String, lastName: String,jobtitle: String ) {
firstnameTitleLabel.text = "Firstname :\(firstName)"
lastnameTitleLabel.text = "Lastname : \(lastName)"
jobTitleLabel.text = "Occupation : \(jobtitle)"
}
func configureImageCell(row: Int, viewModel: ViewModel) {
profileImageView.image = nil
viewModel
.downloadImage(row: row) { [weak self] data in
let image = UIImage(data: data)
self?.profileImageView.image = image
}
}
}
Here is the view controller code .
import UIKit
import Combine
class PeopleViewController: UIViewController {
var coordinator: PeopleBaseCoordinator?
init(coordinator: PeopleBaseCoordinator) {
super.init(nibName: nil, bundle: nil)
self.coordinator = coordinator
title = "People"
}
required init?(coder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
private let viewModel = ViewModel()
private var subscribers = Set<AnyCancellable>()
private var activityIndicator = UIActivityIndicatorView(style: .medium)
private lazy var tableView: UITableView = {
let tableview = UITableView()
tableview.translatesAutoresizingMaskIntoConstraints = false
tableview.dataSource = self
tableview.prefetchDataSource = self
tableview.showsVerticalScrollIndicator = false
tableview.register(PeopleCell.self, forCellReuseIdentifier: PeopleCell.identifier)
return tableview
}()
override func viewDidLoad() {
super.viewDidLoad()
activityIndicator.startAnimating()
setUpUI()
setUpBinding()
self.activityIndicator.stopAnimating()
// Do any additional setup after loading the view.
}
private func setUpUI() {
view.backgroundColor = .white
title = "People List "
view.addSubview(activityIndicator)
view.addSubview(tableView)
// self.tableView.rowHeight = 100.00
tableView.rowHeight = UITableView.automaticDimension
tableView.rowHeight = 100
tableView.topAnchor.constraint(equalTo:view.safeAreaLayoutGuide.topAnchor).isActive = true
tableView.leftAnchor.constraint(equalTo:view.safeAreaLayoutGuide.leftAnchor).isActive = true
tableView.rightAnchor.constraint(equalTo:view.safeAreaLayoutGuide.rightAnchor).isActive = true
tableView.bottomAnchor.constraint(equalTo:view.safeAreaLayoutGuide.bottomAnchor).isActive = true
// Creating constrain for Indecator
activityIndicator.translatesAutoresizingMaskIntoConstraints = false
activityIndicator.centerXAnchor.constraint(equalTo: view.centerXAnchor).isActive = true
activityIndicator.centerYAnchor.constraint(equalTo: view.centerYAnchor).isActive = true
}
private func setUpBinding() {
viewModel
.$peoples
.receive(on : RunLoop.main)
.sink { [weak self ] _ in
self?.tableView.reloadData()
}
.store(in: &subscribers)
viewModel.getPeople()
}
}
extension PeopleViewController: UITableViewDataSource {
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return viewModel.peoples.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
guard let cell = tableView.dequeueReusableCell(withIdentifier: PeopleCell.identifier, for: indexPath) as? PeopleCell
else { return UITableViewCell() }
let row = indexPath.row
let people = viewModel.peoples[row]
cell.configureCell(firstName: people.firstName, lastName: people.lastName,jobtitle: people.jobtitle)
cell.configureImageCell(row: row, viewModel: viewModel)
return cell
}
}
extension PeopleViewController: UITableViewDataSourcePrefetching {
func tableView(_ tableView: UITableView, prefetchRowsAt indexPaths: [IndexPath]) {
viewModel.getPeople()
}
}
Here is the screenshot . As it not showing the job title property into cell .

Answer 1

I think your problem is the height of your containerView
containerView.heightAnchor.constraint(equalToConstant:40).isActive = true
I think 40 is to low to show the jobTitleLabel