Programatically created UISwitch non-responsive - ios

Question

I have created a table that looks like what you see in the screenshot.
Here is the code:
lazy var contentSize = CGSize(width: self.view.frame.width, height: self.view.frame.height)
lazy var scrollView : UIScrollView = {
let scrollView = UIScrollView(frame: view.bounds)
scrollView.backgroundColor = .white
scrollView.frame = self.view.bounds
scrollView.contentSize = CGSize(width: self.view.frame.width, height: self.view.frame.height * 200)
scrollView.autoresizingMask = UIView.AutoresizingMask.flexibleHeight
scrollView.bounces = true
return scrollView
}()
lazy var containerView : UIView = {
let view = UIView()
view.backgroundColor = .white
view.frame.size = contentSize
return view
}()
let weekStack = UIStackView()
weekStack.axis = .vertical
weekStack.distribution = .fillProportionally
weekStack.spacing = 2
containerView.addSubview(weekStack)
weekStack.translatesAutoresizingMaskIntoConstraints = false
weekStack.topAnchor.constraint(equalTo: restaurantImage.bottomAnchor, constant: 20).isActive = true
weekStack.leadingAnchor.constraint(equalTo: containerView.safeAreaLayoutGuide.leadingAnchor, constant: 20).isActive = true
weekStack.trailingAnchor.constraint(equalTo: containerView.safeAreaLayoutGuide.trailingAnchor, constant: -20).isActive = true
let arrayOfDays = ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"]
for index in 0...arrayOfDays.count - 1 {
let dayStack = UIStackView()
weekStack.addArrangedSubview(dayStack)
dayStack.axis = .horizontal
dayStack.distribution = .fillEqually
dayStack.spacing = 4
let daySwitch = UISwitch(frame: CGRect(x: 0, y: 0, width: 0, height: 0))
dayStack.addArrangedSubview(daySwitch)
let dayLabel = UILabel(frame: CGRect(x: 0, y: 0, width: 20, height: 0))
dayLabel.text = arrayOfDays[index]
dayLabel.textAlignment = .center
dayLabel.font = UIFont(name: "NexaLight", size: 16)
dayStack.addArrangedSubview(dayLabel)
let startTextField = UITextField(frame: CGRect(x: 0, y: 0, width: 0, height: 0))
startTextField.placeholder = "Open"
startTextField.textAlignment = .center
startTextField.delegate = self
startTextField.text = "9"
startTextField.font = UIFont(name: "NexaLight", size: 16)
dayStack.addArrangedSubview(startTextField)
startTextField.inputView = timePicker
startTextField.inputAccessoryView = toolbar
let closeTextField = UITextField(frame: CGRect(x: 0, y: 0, width: 0, height: 0))
closeTextField.placeholder = "Close"
closeTextField.textAlignment = .center
closeTextField.text = "23"
closeTextField.font = UIFont(name: "NexaLight", size: 16)
closeTextField.delegate = self
dayStack.addArrangedSubview(closeTextField)
closeTextField.inputView = timePicker
closeTextField.inputAccessoryView = toolbar
}
The problem is that the last 2 switches are not responding as shown in the screenshot. I cannot turn them on. I also cannot interact with the last 2 rows of text fields where you see "9" and "23". This is from the simulator by the way.