Simple Settings View

SettingsView.swift

import UIKit
import RxSwift
import RxCocoa

// MARK: - SettingsView
final class SettingsView: ScrollingStackView {

    private lazy var signOutButton: UIButton = "Sign out"

    // Two `UILabel`s grouped together
    private lazy var appVersionLabels = LabelsView(
        titleStyle: "App Version",
        valueStyle: "🤷‍♀️",
        stackViewStyle: UIStackView.Style(alignment: .center)
    )

    // Config type used to create a UIStackView conforming to `ExpressibleByArrayLiteral`
    // initialized by UIViews as `arrangedSubviews`
    lazy var stackViewStyle: UIStackView.Style = [
        signOutButton,
        appVersionLabels,
        .spacer
    ]
}

extension SettingsView: ViewModelled {
    
    typealias ViewModel = SettingsViewModel

    // Forward user input from this View to the ViewModel
    var inputFromView: ViewModel.Input {
        return ViewModel.Input(
            signOutTrigger: signOutButton.rx.tap.asDriver()
        )
    }

    // Update this View with formatted data from the ViewModel
    func populate(with viewModel: ViewModel.Output) -> [Disposable] {
        // Populate `UILabel` in `LabelsView` holding value
        return [
            viewModel.appVersion.drive(appVersionLabels.rx.value)
        ]
    }
}