Form view extension(for combining two or more elements to one view)

ButtonView.swift

import UIKit

class ButtonFormView: UIView {
    
    init(label: UILabel, button: UIButton) {
        super.init(frame: .zero)
        
        self.translatesAutoresizingMaskIntoConstraints = false
        label.translatesAutoresizingMaskIntoConstraints = false
        button.translatesAutoresizingMaskIntoConstraints = false
        
        self.addSubview(label)
        self.addSubview(button)
        
        NSLayoutConstraint.activate([
            label.topAnchor.constraint(equalTo: self.topAnchor),
            label.leadingAnchor.constraint(equalTo: self.leadingAnchor)
        ])
        
        NSLayoutConstraint.activate([
            button.topAnchor.constraint(equalTo: label.bottomAnchor, constant: 20),
            button.leadingAnchor.constraint(equalTo: self.leadingAnchor),
            button.trailingAnchor.constraint(equalTo: self.trailingAnchor),
            button.heightAnchor.constraint(equalToConstant: 60)
        ])
        
        bottomAnchor.constraint(equalTo: button.bottomAnchor).isActive = true
    }
    
    required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
}

ViewController.swift

...


private func setupConstraints() {
 let googleView = ButtonFormView(label: googleLabel, button: googleButton) 
   let googleView2 = ButtonFormView(label: googleLabel, button: googleButton) 
   let googleView3 = ButtonFormView(label: googleLabel, button: googleButton) 
  
  let stackView = UIStackView(arrangeSubviews: [googleView, googleView2, googleview3])
  stackView.translateAutoresizingMask = false
  stackView.axis = .vertical
  stackView.spacing = 40
  
  view.addSubview(stackView)
}