xmhafiz

class BottomSheetViewController: UIViewController {
    // ...
    // sub-class of this view controller will call this function to set a content
    func setContent(content: UIView) {
        contentView.addSubview(content)
        NSLayoutConstraint.activate([
            content.leadingAnchor.constraint(equalTo: contentView.leadingAnchor),
            content.trailingAnchor.constraint(equalTo: contentView.trailingAnchor),
            content.topAnchor.constraint(equalTo: contentView.topAnchor),
            content.bottomAnchor.constraint(equalTo: contentView.bottomAnchor)

xmhafiz

class BottomSheetViewController: UIViewController {
    // ...
    private var minTopSpacing: CGFloat = 80
    
    // MARK: - View Setup
    override func viewDidLoad() {
        super.viewDidLoad()
        setupViews()
    }
    

xmhafiz

import UIKit

class BottomSheetViewController: UIViewController {
    // MARK: - UI
    /// Main bottom sheet container view
    private lazy var mainContainerView: UIView = {
        let view = UIView()
        view.translatesAutoresizingMaskIntoConstraints = false
        view.backgroundColor = .systemBackground
        view.layer.cornerRadius = 8

xmhafiz

import UIKit

class ViewController: UIViewController {
    // After connected from storyboard to this class
    @IBOutlet weak var contentStackView: UIStackView!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        // Add GradientButton programatically

xmhafiz

import UIKit

@IBDesignable
class GradientButton: UIButton {
    
    // Define the colors for the gradient
    @IBInspectable var startColor: UIColor = UIColor.red {
        didSet {
            updateGradient()
        }

xmhafiz

func showResultScreen() {
    let homeVC = ResultViewController()
    navigationController?.pushViewController(homeVC, animated: true)
}

xmhafiz

//
//  ResultViewController.swift
//

import UIKit

class ResultViewController: UIViewController {
    lazy var messageLabel: UILabel = {
        let label = UILabel()
        label.text = "Login success"

xmhafiz

func setupPublishers() {
    // 1
    NotificationCenter.default
        .publisher(for: UITextField.textDidChangeNotification, object: emailTextField)
        .map { ($0.object as! UITextField).text ?? "" }
        .assign(to: \.email, on: viewModel)
        .store(in: &cancellables)

    NotificationCenter.default

xmhafiz

func setupViews() {
    view.addSubview(stackView)
    stackView.addArrangedSubview(emailTextField)
    stackView.addArrangedSubview(passwordTextField)
    stackView.addArrangedSubview(submitButton)
    stackView.addArrangedSubview(errorLabel) // append the error label here
}

xmhafiz

lazy var errorLabel: UILabel = {
    let label = UILabel()
    label.text = "Oops, incorrect email or password!"
    label.textColor = .white
    label.backgroundColor = .red
    label.textAlignment = .center
    label.translatesAutoresizingMaskIntoConstraints = false
    label.alpha = 0
    return label
}()