A source code for horizontally scrolling content view

HorizontalScrollView.swift

//
//  HorizontalScrollView.swift
//  Test
//
//  Created by Jayesh Kawli on 4/21/23.
//

import UIKit

class HorizontalScrollView : UIViewController {

    private let stackView: UIStackView = {
        let stackView = UIStackView()
        stackView.translatesAutoresizingMaskIntoConstraints = false
        stackView.axis = .horizontal
        stackView.spacing = 20
        return stackView
    }()

    private let scrollView: UIScrollView = {
        let scrollView = UIScrollView()
        scrollView.translatesAutoresizingMaskIntoConstraints = false
        scrollView.showsHorizontalScrollIndicator = false
        return scrollView
    }()

    override func viewDidLoad() {
        super.viewDidLoad()
        setupViews()
    }

    private func setupViews() {

        view.backgroundColor = .white
        view.addSubview(scrollView)
        scrollView.addSubview(stackView)

        scrollView.topAnchor.constraint(equalTo: view.safeAreaLayoutGuide.topAnchor).isActive = true
        scrollView.leadingAnchor.constraint(equalTo: view.leadingAnchor).isActive = true
        scrollView.trailingAnchor.constraint(equalTo: view.trailingAnchor).isActive = true
        scrollView.heightAnchor.constraint(equalToConstant: 50).isActive = true

        stackView.topAnchor.constraint(equalTo: scrollView.topAnchor).isActive = true
        stackView.leadingAnchor.constraint(equalTo: scrollView.leadingAnchor).isActive = true
        stackView.trailingAnchor.constraint(equalTo: scrollView.trailingAnchor).isActive = true
        stackView.heightAnchor.constraint(equalTo: scrollView.heightAnchor).isActive = true

        for _ in 0..<20 {
            let square = UIView()
            square.translatesAutoresizingMaskIntoConstraints = true
            square.widthAnchor.constraint(equalToConstant: 50).isActive = true
            square.heightAnchor.constraint(equalToConstant: 50).isActive = true
            square.backgroundColor = .blue
            stackView.addArrangedSubview(square)
        }
    }
}