Why doesn't UITapGestureRecognizer fire?

Question

Swift

Hello!
There is the following design element:


Accordingly, when the user sees the window for the first time, none of the options is selected:

The last option is implemented through a view that has a stack that will contain "Man" and "Woman". I made circles through two views (leftOuterView, leftInnerView). I didn’t go by the buttons, because I want to make a beautiful animation when choosing.

I add UITapGestureRecognizer, but it does not work (does not call the selector). isUserInteractionEnabled seems to be enabled in all internal elements (highlighted with brands). Please help, why is UITapGestureRecognizer not working?

Here is the final code:

import UIKit

enum Gender{
    case male
    case female
}

class genderSelectionView: UIView {

    /*
    // Only override draw() if you perform custom drawing.
    // An empty implementation adversely affects performance during animation.
    override func draw(_ rect: CGRect) {
        // Drawing code
    }
    */
    
    
    func configure(){
        // MARK: - isUserInteractionEnabled
        self.isUserInteractionEnabled = true
        let titleLabel:UILabel = {
            let label = UILabel()
            label.textColor = UIColor(red:0.68, green:0.74, blue:0.76, alpha:1.0)
            label.font = UIFont.systemFont(ofSize: 12, weight: .medium)
            label.textAlignment = .left
                                label.numberOfLines = 1
                                label.translatesAutoresizingMaskIntoConstraints = false
                                //label.heightAnchor.constraint(equalToConstant: 15).isActive = true
                   label.text = "Пол"
                      return label
        }()
        addSubview(titleLabel)
        titleLabel.leadingAnchor.constraint(equalTo: self.leadingAnchor, constant: 15).isActive = true
        titleLabel.topAnchor.constraint(equalTo: self.topAnchor).isActive = true
        
        let genderStack = UIStackView()
        genderStack.translatesAutoresizingMaskIntoConstraints = false
        
        genderStack.axis = .horizontal
        genderStack.distribution = .fillEqually
        genderStack.alignment = .leading
        
        let male = genderView()
        male.configure(gender: .male)
        male.tapRecognizer.addTarget(self, action: #selector(self.maleTapped(recognizer:)))
        let female = genderView()
        female.configure(gender: .female)
        female.tapRecognizer.addTarget(self, action: #selector(self.femaleTapped(recognizer:)))
        
        genderStack.addArrangedSubview(male)
        genderStack.addArrangedSubview(female)
        
        addSubview(genderStack)
        genderStack.topAnchor.constraint(equalTo: titleLabel.bottomAnchor,constant: 15).isActive = true
        genderStack.leadingAnchor.constraint(equalTo:  self.leadingAnchor, constant: 15).isActive = true
        genderStack.heightAnchor.constraint(equalToConstant: 20).isActive = true
        genderStack.trailingAnchor.constraint(equalTo: trailingAnchor,constant: -15).isActive = true
        
        
        
        
    }
    
    @objc func maleTapped(recognizer : UITapGestureRecognizer){
        print("male")
    }
    
    @objc func femaleTapped(recognizer : UITapGestureRecognizer){
        print("female")
    }
}

class genderView:UIView{
    let leftOuterView:UIView = {
        
        let view = UIView()
        view.translatesAutoresizingMaskIntoConstraints = false
        view.heightAnchor.constraint(equalToConstant: 20).isActive = true
        view.widthAnchor.constraint(equalToConstant: 20).isActive = true
        view.layer.cornerRadius = 10
        view.layer.borderWidth = 1.5
        view.layer.borderColor = UIColor(red:0.85, green:0.85, blue:0.85, alpha:1.0).cgColor
        // MARK: - isUserInteractionEnabled
        view.isUserInteractionEnabled = true
        return view
        
    }()
    let leftInnerView:UIView = {
        let view = UIView()
        view.translatesAutoresizingMaskIntoConstraints = false
        view.heightAnchor.constraint(equalToConstant: 10).isActive = true
        view.widthAnchor.constraint(equalToConstant: 10).isActive = true
        view.layer.cornerRadius = 5
        view.backgroundColor = .white
        // MARK: - isUserInteractionEnabled
        view.isUserInteractionEnabled = true
        return view
    }()
    let label:UILabel = {
        let label = UILabel()
        label.textColor = UIColor(red:0.68, green:0.74, blue:0.76, alpha:1.0)
        label.font = UIFont.systemFont(ofSize: 16, weight: .medium)
        label.textAlignment = .left
        label.translatesAutoresizingMaskIntoConstraints = false
        // MARK: - isUserInteractionEnabled
        label.isUserInteractionEnabled = true
        return label
        
    }()
    
    let tapRecognizer = UITapGestureRecognizer()
    
    
    override init(frame: CGRect) {
        super.init(frame:frame)
    }
    
    func configure(gender:Gender){
        // MARK: - isUserInteractionEnabled
        self.isUserInteractionEnabled = true
        addSubview(leftOuterView)
        leftOuterView.centerYAnchor.constraint(equalTo: centerYAnchor).isActive = true
        leftOuterView.leadingAnchor.constraint(equalTo: leadingAnchor).isActive = true
        
        leftOuterView.addSubview(leftInnerView)
        leftInnerView.centerYAnchor.constraint(equalTo: leftOuterView.centerYAnchor).isActive = true
        leftInnerView.centerXAnchor.constraint(equalTo: leftOuterView.centerXAnchor).isActive = true
        
        addSubview(label)
        label.leadingAnchor.constraint(equalTo: leftOuterView.trailingAnchor, constant: 10).isActive = true
        label.centerYAnchor.constraint(equalTo: centerYAnchor).isActive = true
        switch gender {
        case .male:
            label.text = "Мужской"
        case .female:
            label.text = "Женский"
        }
        
        
        addGestureRecognizer(tapRecognizer)
        
    }
    
    required init?(coder: NSCoder) {
        super.init(coder: coder)
    }
    
}

Answer 1

turn on UserInteraction at the StackView (which is let genderStack = UIStackView()) may help.