Vision-Face-Quality-Build-UI.swift

class ViewController: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate {

    var imageView: UIImageView?
    let marginConstant : CGFloat = 20.0

    let button:UIButton = {
        let view = UIButton()
        view.translatesAutoresizingMaskIntoConstraints = false
        let config = UIImage.SymbolConfiguration(pointSize: 50)
        view.setImage(UIImage(systemName: "photo.fill", withConfiguration: config), for: .normal)
        
        return view
    }()
    
    let visionButton:UIButton = {
        let view = UIButton()
        view.translatesAutoresizingMaskIntoConstraints = false
        let config = UIImage.SymbolConfiguration(pointSize: 50)
        view.setImage(UIImage(systemName: "eye.fill", withConfiguration: config), for: .normal)
        
        return view
    }()
    
    

    override func viewDidLoad() {
        super.viewDidLoad()
        
        setupImageView()
        setupImagePickerBtn()
        setupVisionButton()
        setupCollectionView()
    }
    


    func setupImageView(){
        imageView = UIImageView(frame: .zero)
        imageView?.contentMode = .scaleAspectFit
        imageView?.translatesAutoresizingMaskIntoConstraints = false
        view.addSubview(imageView!)
        
        
        NSLayoutConstraint.activate([
            imageView!.topAnchor.constraint(equalTo: view.safeAreaLayoutGuide.topAnchor, constant: marginConstant*2),
            imageView!.bottomAnchor.constraint(equalTo: view.safeAreaLayoutGuide.bottomAnchor, constant: -marginConstant*2),
            imageView!.leadingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.leadingAnchor, constant: marginConstant*2),
            imageView!.trailingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.trailingAnchor, constant: -marginConstant*2),
        ])
    }
    

    func setupImagePickerBtn(){
        self.view.addSubview(button)
        
        NSLayoutConstraint.activate([
            button.heightAnchor.constraint(equalToConstant: 150),
            button.trailingAnchor.constraint(equalTo: view.trailingAnchor, constant: -marginConstant),
            button.bottomAnchor.constraint(equalTo: view.safeAreaLayoutGuide.bottomAnchor, constant: -marginConstant/2),
            button.widthAnchor.constraint(equalToConstant: 150)
        ])
        
        button.addTarget(self, action: #selector(onButtonClick), for: .touchUpInside)
    }


    func setupVisionButton(){
        self.view.addSubview(visionButton)
        
        NSLayoutConstraint.activate([
            visionButton.heightAnchor.constraint(equalToConstant: 150),
            visionButton.leadingAnchor.constraint(equalTo: view.leadingAnchor, constant: marginConstant),
            visionButton.bottomAnchor.constraint(equalTo: view.safeAreaLayoutGuide.bottomAnchor, constant: -marginConstant/2),
            visionButton.widthAnchor.constraint(equalToConstant: 150)
        ])
        
        visionButton.addTarget(self, action: #selector(startVisionRequest(sender:)), for: .touchUpInside)
    }