gistfile1.txt

import UIKit
import AXSnapshot

class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view.
        do {
            let label = UILabel(frame: .init(x: 100, y: 100, width: 100, height: 100))
            label.text = "Hello"
            view.addSubview(label)
        }
        
        do {
            let label = UILabel(frame: .init(x: 100, y: 200, width: 100, height: 100))
            label.text = "World"
            view.addSubview(label)
        }
    }
}

struct ViewController_Preview: PreviewProvider {
    static var previews: some View {
        ViewController()
            .printAccessiblity()
            .showPreview(.iPhone8)
    }
}

#if canImport(SwiftUI) && DEBUG
import SwiftUI

struct UIViewPreview<View: UIView>: UIViewRepresentable {
    let view: View
    
    init(_ builder: @escaping () -> View) {
        view = builder()
    }
    
    // MARK: - UIViewRepresentable
    
    func makeUIView(context: Context) -> UIView {
        return view
    }
    
    func updateUIView(_ view: UIView, context: Context) {
        view.setContentHuggingPriority(.defaultHigh, for: .horizontal)
        view.setContentHuggingPriority(.defaultHigh, for: .vertical)
    }
}

extension UIViewController {
    
    private struct Preview: UIViewControllerRepresentable {
        let viewController: UIViewController
        
        func makeUIViewController(context: Context) -> UIViewController {
            return viewController
        }
        
        func updateUIViewController(_ uiViewController: UIViewController, context: Context) {
        }
    }
    
    func printAccessiblity() -> Self {
        DispatchQueue.main.asyncAfter(deadline: .now() + 1, execute: { [weak self] in
            guard let self else { return }
            print(self.view.axSnapshot())
            
            self.view.exposedAccessibleViews().enumerated().forEach { (index, view) in
                let label = UILabel()
                label.backgroundColor = .darkGray.withAlphaComponent(0.5)
                label.text = "\(index)"
                label.sizeToFit()
                label.isUserInteractionEnabled = false
                label.accessibilityTraits = .none
                view.addSubview(label)
//                view.backgroundColor = .lightGray
//                view.layer.borderWidth = 1
            }
        })
        
        return self
    }
    
    func showPreview(_ deviceType: DeviceType = .iPhone12Pro) -> some View {
        Preview(viewController: self).previewDevice(PreviewDevice(rawValue: deviceType.name()))
    }
}
#endif

enum DeviceType {
    case iPhoneSE2
    case iPhone8
    case iPhone12Pro
    case iPhone12ProMax
    
    func name() -> String {
        switch self {
        case .iPhoneSE2:
            return "iPhone SE"
        case .iPhone8:
            return "iPhone 8"
        case .iPhone12Pro:
            return "iPhone 12 Pro"
        case .iPhone12ProMax:
            return "iPhone 12 Pro Max"
        }
    }
}