UIView.swift

import UIKit

class View: UIView {

    override init(frame: CGRect) {
        super.init(frame: frame)
        addViews()
    }
    
    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    let emailTextField: UITextField = {
        let textField = UITextField()
        textField.placeholder = "email"
        textField.borderStyle = .roundedRect
        textField.translatesAutoresizingMaskIntoConstraints = false
        return textField
    }()
    
    let firstNameTextField: UITextField = {
        let textField = UITextField()
        textField.placeholder = "first name"
        textField.borderStyle = .roundedRect
        textField.translatesAutoresizingMaskIntoConstraints = false
        return textField
    }()
    
    let lastNameTextField: UITextField = {
        let textField = UITextField()
        textField.placeholder = "last name"
        textField.borderStyle = .roundedRect
        textField.translatesAutoresizingMaskIntoConstraints = false
        return textField
    }()
    
    lazy var saveButton: UIButton = {
        let button = UIButton(type: UIButtonType.system)
        button.setTitle("Save", for: .normal)
        button.setTitleColor(.black, for: .normal)
        button.translatesAutoresizingMaskIntoConstraints = false
//        button.addTarget(self, action: #selector(saveButtonTapped(_:)), for: .touchUpInside)
        return button
    }()
    
    
    func addViews(){
        
        addSubview(emailTextField)
        addSubview(firstNameTextField)
        addSubview(lastNameTextField)
        addSubview(saveButton)
        
        emailTextField.topAnchor.constraint(equalTo: layoutMarginsGuide.topAnchor, constant: 10).isActive = true
        emailTextField.leftAnchor.constraint(equalTo: leftAnchor, constant: 10).isActive = true
        emailTextField.rightAnchor.constraint(equalTo: rightAnchor, constant: -10).isActive = true
        emailTextField.heightAnchor.constraint(equalToConstant: 35).isActive = true
        
        firstNameTextField.topAnchor.constraint(equalTo: emailTextField.bottomAnchor, constant: 10).isActive = true
        firstNameTextField.leftAnchor.constraint(equalTo: leftAnchor, constant: 10).isActive = true
        firstNameTextField.rightAnchor.constraint(equalTo: rightAnchor, constant: -10).isActive = true
        firstNameTextField.heightAnchor.constraint(equalToConstant: 35).isActive = true
        
        lastNameTextField.topAnchor.constraint(equalTo: firstNameTextField.bottomAnchor, constant: 10).isActive = true
        lastNameTextField.leftAnchor.constraint(equalTo: leftAnchor, constant: 10).isActive = true
        lastNameTextField.rightAnchor.constraint(equalTo: rightAnchor, constant: -10).isActive = true
        //        lastNameTextField.bottomAnchor.constraint(equalTo: bottomAnchor, constant: -10).isActive = true
        lastNameTextField.heightAnchor.constraint(equalToConstant: 35).isActive = true
        
        
        saveButton.topAnchor.constraint(equalTo: lastNameTextField.bottomAnchor, constant: 10).isActive = true
        saveButton.leftAnchor.constraint(equalTo: leftAnchor, constant: 10).isActive = true
        saveButton.rightAnchor.constraint(equalTo: rightAnchor, constant: -10).isActive = true
        saveButton.bottomAnchor.constraint(equalTo: layoutMarginsGuide.bottomAnchor, constant: -10).isActive = true
        
    }

}