使用带有 StackView 的 ScrollView 作为子视图和 UIViews 作为 StackView 的 children
Using ScrollView with StackView as subview and UIViews as children of StackView
我正在努力让我的滚动视图以编程方式工作。
我有一个视图控制器，它实例化了一个具有以下约束的 UIScrollView
class HomeTabBarController: ViewController {
let homePageView = HomePageView()
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(true)
homePageView.setupHomePage()
view.addSubview(homePageView)
///constraints
homePageView.stackView.widthAnchor.constraint(equalTo: view.widthAnchor).isActive = true
homePageView.leadingAnchor.constraint(equalTo: view.leadingAnchor).isActive = true
homePageView.topAnchor.constraint(equalTo: view.topAnchor).isActive = true;
homePageView.trailingAnchor.constraint(equalTo: view.trailingAnchor).isActive = true;
homePageView.bottomAnchor.constraint(equalTo: view.bottomAnchor, constant: -83).isActive = true;
}
}
HomePageView (UIScrollView) 有一个 UIStackView 并实例化了另外 3 个 UIView，它们是 UIStackView 的 children。代码及约束如下
class HomePageView: UIScrollView {
var homePageCarrousel: HomePageCarrousel?
var homePageSocial: HomePageSocialUp?
var homePageAboutUs: HomePageAboutUs?
var stackView = UIStackView()
func setupHomePage() {
translatesAutoresizingMaskIntoConstraints = false
homePageCarrousel = HomePageCarrousel()
homePageSocial = HomePageSocialUp()
homePageAboutUs = HomePageAboutUs()
guard let homePageSocial = homePageSocial, let homePageCarrousel = homePageCarrousel, let homePageAboutUs = homePageAboutUs else { return }
homePageSocial.setupSocialHeader()
stackView.addArrangedSubview(homePageSocial)
homePageCarrousel.setupCarrousel()
stackView.addArrangedSubview(homePageCarrousel)
homePageAboutUs.setup()
stackView.addArrangedSubview(homePageAboutUs)
addSubview(stackView)
stackView.translatesAutoresizingMaskIntoConstraints = false
stackView.axis = .vertical
stackView.spacing = 10
setLayout()
}
func setLayout(){
guard let homePageSocial = homePageSocial, let homePageCarrousel = homePageCarrousel, let homePageAboutUs = homePageAboutUs else { return }
///header
homePageSocial.leadingAnchor.constraint(equalTo: stackView.leadingAnchor).isActive = true
homePageSocial.topAnchor.constraint(equalTo: stackView.topAnchor).isActive = true
homePageSocial.trailingAnchor.constraint(equalTo: stackView.trailingAnchor).isActive = true
///carrousel
homePageCarrousel.leadingAnchor.constraint(equalTo: stackView.leadingAnchor, constant: 20).isActive = true
homePageCarrousel.topAnchor.constraint(equalTo: stackView.bottomAnchor, constant: 20).isActive = true
homePageCarrousel.trailingAnchor.constraint(equalTo: stackView.trailingAnchor, constant: -20).isActive = true
///about us
homePageAboutUs.leadingAnchor.constraint(equalTo: stackView.leadingAnchor).isActive = true
homePageAboutUs.topAnchor.constraint(equalTo: homePageCarrousel.bottomAnchor, constant: 10).isActive = true
homePageAboutUs.trailingAnchor.constraint(equalTo: stackView.trailingAnchor).isActive = true
homePageAboutUs.bottomAnchor.constraint(equalTo: stackView.bottomAnchor).isActive = true
///stackview
self.stackView.leadingAnchor.constraint(equalTo: leadingAnchor).isActive = true;
self.stackView.topAnchor.constraint(equalTo: topAnchor).isActive = true;
self.stackView.trailingAnchor.constraint(equalTo: trailingAnchor).isActive = true;
self.stackView.bottomAnchor.constraint(equalTo: bottomAnchor).isActive = true;
}
func dispose() {
homePageSocial = nil
homePageCarrousel = nil
homePageAboutUs = nil
subviews.forEach{[=12=].removeFromSuperview()}
}
}
每个 children UIView（homePageSocial、homePageCarrousel 和 homePageAboutUs）都有约束也有约束：
HomePageCarrousel
加载 UIImageView 并在添加为子视图后将约束设置为
heightAnchor.constraint(equalToConstant: imageView.frame.height).isActive = true
主页关于我们
有 3 个 UITextviews (headerText, bodyTextLeft, bodyTextRight)
Header 在顶部，其下方的 bodytextLeft 为屏幕宽度的 50% x = 0 和 bodyTextRight x = bodyTextLeft 的宽度。
约束条件如下
heightAnchor.constraint(equalToConstant: headerText.frame.height + bodyTextLeft.frame.height).isActive = true
bodyTextLeft.topAnchor.constraint(equalTo: headerText.bottomAnchor, constant: 15).isActive = true
bodyTextLeft.widthAnchor.constraint(equalToConstant: UIScreen.main.bounds.width / 2).isActive = true
bodyTextRight.topAnchor.constraint(equalTo: headerText.bottomAnchor, constant: 15).isActive = true
bodyTextRight.widthAnchor.constraint(equalToConstant: UIScreen.main.bounds.width / 2).isActive = true
bodyTextRight.leadingAnchor.constraint(equalTo: bodyTextLeft.trailingAnchor).isActive = true
HomePageSocialUp
带有图标和约束条件
的基本 header
heightAnchor.constraint(equalToConstant: 325).isActive = true
完成所有这些设置后，我仍然无法让我的 ui 滚动视图在 y 轴上滚动，将我的 homePageAboutUs 文本留在 tabBar 下方并离开屏幕。
我做错了什么？
提前致谢
首先 - UIStackView 的主要目的是安排其子视图，因此向这些子视图添加位置约束是错误的。
接下来，将子视图添加到控制器的“根”视图（例如您的滚动视图）时，请确保将它们限制在安全区域布局指南中。
第三，将滚动视图的内容限制在其内容布局指南中。
我有点接受你的描述，希望我接近你在这里的目的：
向下滚动后：
这是您的代码，经过修改以产生该结果：
class HomeTabBarController: UIViewController {
let homePageView = HomePageView()
override func viewDidLoad() {
super.viewDidLoad()
homePageView.setupHomePage()
view.addSubview(homePageView)
// respect safe area
let g = view.safeAreaLayoutGuide
///constraints
NSLayoutConstraint.activate([
homePageView.leadingAnchor.constraint(equalTo: g.leadingAnchor),
homePageView.topAnchor.constraint(equalTo: g.topAnchor),
homePageView.trailingAnchor.constraint(equalTo: g.trailingAnchor),
homePageView.bottomAnchor.constraint(equalTo: g.bottomAnchor),
])
}
}
class HomePageSocialUp: UIView {
func setupSocialHeader() -> Void {
translatesAutoresizingMaskIntoConstraints = false
backgroundColor = .red
let imgView = UIImageView()
imgView.translatesAutoresizingMaskIntoConstraints = false
addSubview(imgView)
NSLayoutConstraint.activate([
// constrain image view 20-pts on each side
imgView.topAnchor.constraint(equalTo: topAnchor, constant: 20.0),
imgView.leadingAnchor.constraint(equalTo: leadingAnchor, constant: 20.0),
imgView.trailingAnchor.constraint(equalTo: trailingAnchor, constant: -20.0),
imgView.bottomAnchor.constraint(equalTo: bottomAnchor, constant: -20.0),
// Height = 325
imgView.heightAnchor.constraint(equalToConstant: 325.0),
])
if let img = UIImage(named: "myHeaderImage") {
imgView.image = img
}
}
}
class HomePageCarrousel: UIView {
func setupCarrousel() -> Void {
translatesAutoresizingMaskIntoConstraints = false
backgroundColor = .green
let imgView = UIImageView()
imgView.translatesAutoresizingMaskIntoConstraints = false
addSubview(imgView)
NSLayoutConstraint.activate([
// constrain image view 20-pts on each side
imgView.topAnchor.constraint(equalTo: topAnchor, constant: 20.0),
imgView.leadingAnchor.constraint(equalTo: leadingAnchor, constant: 20.0),
imgView.trailingAnchor.constraint(equalTo: trailingAnchor, constant: -20.0),
imgView.bottomAnchor.constraint(equalTo: bottomAnchor, constant: -20.0),
// let's make it 3:2 ratio
imgView.heightAnchor.constraint(equalTo: imgView.widthAnchor, multiplier: 2.0 / 3.0)
])
if let img = UIImage(named: "myCarouselImage") {
imgView.image = img
}
}
}
class HomePageAboutUs: UIView {
let headerText = UILabel()
let bodyTextLeft = UILabel()
let bodyTextRight = UILabel()
func setup() -> Void {
translatesAutoresizingMaskIntoConstraints = false
backgroundColor = .blue
[headerText, bodyTextLeft, bodyTextRight].forEach {
// keep label height to text content
[=10=].setContentHuggingPriority(.required, for: .vertical)
[=10=].setContentCompressionResistancePriority(.required, for: .vertical)
// allow word-wrap
[=10=].numberOfLines = 0
// yellow background
[=10=].backgroundColor = .yellow
[=10=].translatesAutoresizingMaskIntoConstraints = false
addSubview([=10=])
}
NSLayoutConstraint.activate([
// header text 8-pts from Top / Leading / Trailing
headerText.topAnchor.constraint(equalTo: topAnchor, constant: 8.0),
headerText.leadingAnchor.constraint(equalTo: leadingAnchor, constant: 8.0),
headerText.trailingAnchor.constraint(equalTo: trailingAnchor, constant: -8.0),
// left text 8-pts from Bottom of header text, 8-pts Leading
bodyTextLeft.topAnchor.constraint(equalTo: headerText.bottomAnchor, constant: 8.0),
bodyTextLeft.leadingAnchor.constraint(equalTo: leadingAnchor, constant: 8.0),
// right text 8-pts from Bottom of header text, 8-pts Trailing
bodyTextRight.topAnchor.constraint(equalTo: headerText.bottomAnchor, constant: 8.0),
bodyTextRight.trailingAnchor.constraint(equalTo: trailingAnchor, constant: -8.0),
// 8-pts between left and right text
bodyTextRight.leadingAnchor.constraint(equalTo: bodyTextLeft.trailingAnchor, constant: 8.0),
// left and right text equal width
bodyTextLeft.widthAnchor.constraint(equalTo: bodyTextRight.widthAnchor),
// constrain Bottom of both to <= 8 (at least 8-pts
bodyTextLeft.bottomAnchor.constraint(lessThanOrEqualTo: bottomAnchor, constant: -8.0),
bodyTextRight.bottomAnchor.constraint(lessThanOrEqualTo: bottomAnchor, constant: -8.0),
])
headerText.font = .systemFont(ofSize: 20, weight: .regular)
bodyTextLeft.font = .systemFont(ofSize: 16, weight: .regular)
bodyTextRight.font = .systemFont(ofSize: 16, weight: .regular)
// texxt alignment
headerText.textAlignment = .center
bodyTextLeft.textAlignment = .left
bodyTextRight.textAlignment = .right
// some sample text
headerText.text = "This is the text for the About Us Header label. It will, of course, wrap onto multiple lines when needed, and auto-size it's height to fit the text."
bodyTextLeft.text = "Left label with\nembedded newlines\nso we can see it grow\nto fit the text.\nLine 5\nLine 6\nLine 7"
bodyTextRight.text = "Right label will wrap if needed. The one with the most lines will determine the bottom."
}
}
class HomePageView: UIScrollView {
var homePageCarrousel: HomePageCarrousel?
var homePageSocial: HomePageSocialUp?
var homePageAboutUs: HomePageAboutUs?
var stackView = UIStackView()
func setupHomePage() {
translatesAutoresizingMaskIntoConstraints = false
homePageCarrousel = HomePageCarrousel()
homePageSocial = HomePageSocialUp()
homePageAboutUs = HomePageAboutUs()
guard let homePageSocial = homePageSocial, let homePageCarrousel = homePageCarrousel, let homePageAboutUs = homePageAboutUs else { return }
homePageSocial.setupSocialHeader()
stackView.addArrangedSubview(homePageSocial)
homePageCarrousel.setupCarrousel()
stackView.addArrangedSubview(homePageCarrousel)
homePageAboutUs.setup()
stackView.addArrangedSubview(homePageAboutUs)
addSubview(stackView)
stackView.translatesAutoresizingMaskIntoConstraints = false
stackView.axis = .vertical
stackView.spacing = 10
setLayout()
}
func setLayout(){
// constrain stackView to scroll view's Content Layout Guide
let g = self.contentLayoutGuide
///stackview
NSLayoutConstraint.activate([
self.stackView.leadingAnchor.constraint(equalTo: g.leadingAnchor),
self.stackView.topAnchor.constraint(equalTo: g.topAnchor),
self.stackView.trailingAnchor.constraint(equalTo: g.trailingAnchor),
self.stackView.bottomAnchor.constraint(equalTo: g.bottomAnchor),
// stack view width is scroll view's frame layout guide width
stackView.widthAnchor.constraint(equalTo: self.frameLayoutGuide.widthAnchor),
])
}
}
我正在努力让我的滚动视图以编程方式工作。
我有一个视图控制器，它实例化了一个具有以下约束的 UIScrollView
class HomeTabBarController: ViewController {
let homePageView = HomePageView()
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(true)
homePageView.setupHomePage()
view.addSubview(homePageView)
///constraints
homePageView.stackView.widthAnchor.constraint(equalTo: view.widthAnchor).isActive = true
homePageView.leadingAnchor.constraint(equalTo: view.leadingAnchor).isActive = true
homePageView.topAnchor.constraint(equalTo: view.topAnchor).isActive = true;
homePageView.trailingAnchor.constraint(equalTo: view.trailingAnchor).isActive = true;
homePageView.bottomAnchor.constraint(equalTo: view.bottomAnchor, constant: -83).isActive = true;
}
}
HomePageView (UIScrollView) 有一个 UIStackView 并实例化了另外 3 个 UIView，它们是 UIStackView 的 children。代码及约束如下
class HomePageView: UIScrollView {
var homePageCarrousel: HomePageCarrousel?
var homePageSocial: HomePageSocialUp?
var homePageAboutUs: HomePageAboutUs?
var stackView = UIStackView()
func setupHomePage() {
translatesAutoresizingMaskIntoConstraints = false
homePageCarrousel = HomePageCarrousel()
homePageSocial = HomePageSocialUp()
homePageAboutUs = HomePageAboutUs()
guard let homePageSocial = homePageSocial, let homePageCarrousel = homePageCarrousel, let homePageAboutUs = homePageAboutUs else { return }
homePageSocial.setupSocialHeader()
stackView.addArrangedSubview(homePageSocial)
homePageCarrousel.setupCarrousel()
stackView.addArrangedSubview(homePageCarrousel)
homePageAboutUs.setup()
stackView.addArrangedSubview(homePageAboutUs)
addSubview(stackView)
stackView.translatesAutoresizingMaskIntoConstraints = false
stackView.axis = .vertical
stackView.spacing = 10
setLayout()
}
func setLayout(){
guard let homePageSocial = homePageSocial, let homePageCarrousel = homePageCarrousel, let homePageAboutUs = homePageAboutUs else { return }
///header
homePageSocial.leadingAnchor.constraint(equalTo: stackView.leadingAnchor).isActive = true
homePageSocial.topAnchor.constraint(equalTo: stackView.topAnchor).isActive = true
homePageSocial.trailingAnchor.constraint(equalTo: stackView.trailingAnchor).isActive = true
///carrousel
homePageCarrousel.leadingAnchor.constraint(equalTo: stackView.leadingAnchor, constant: 20).isActive = true
homePageCarrousel.topAnchor.constraint(equalTo: stackView.bottomAnchor, constant: 20).isActive = true
homePageCarrousel.trailingAnchor.constraint(equalTo: stackView.trailingAnchor, constant: -20).isActive = true
///about us
homePageAboutUs.leadingAnchor.constraint(equalTo: stackView.leadingAnchor).isActive = true
homePageAboutUs.topAnchor.constraint(equalTo: homePageCarrousel.bottomAnchor, constant: 10).isActive = true
homePageAboutUs.trailingAnchor.constraint(equalTo: stackView.trailingAnchor).isActive = true
homePageAboutUs.bottomAnchor.constraint(equalTo: stackView.bottomAnchor).isActive = true
///stackview
self.stackView.leadingAnchor.constraint(equalTo: leadingAnchor).isActive = true;
self.stackView.topAnchor.constraint(equalTo: topAnchor).isActive = true;
self.stackView.trailingAnchor.constraint(equalTo: trailingAnchor).isActive = true;
self.stackView.bottomAnchor.constraint(equalTo: bottomAnchor).isActive = true;
}
func dispose() {
homePageSocial = nil
homePageCarrousel = nil
homePageAboutUs = nil
subviews.forEach{[=12=].removeFromSuperview()}
}
}
每个 children UIView（homePageSocial、homePageCarrousel 和 homePageAboutUs）都有约束也有约束：
HomePageCarrousel
加载 UIImageView 并在添加为子视图后将约束设置为
heightAnchor.constraint(equalToConstant: imageView.frame.height).isActive = true
主页关于我们 有 3 个 UITextviews (headerText, bodyTextLeft, bodyTextRight) Header 在顶部，其下方的 bodytextLeft 为屏幕宽度的 50% x = 0 和 bodyTextRight x = bodyTextLeft 的宽度。
约束条件如下
heightAnchor.constraint(equalToConstant: headerText.frame.height + bodyTextLeft.frame.height).isActive = true
bodyTextLeft.topAnchor.constraint(equalTo: headerText.bottomAnchor, constant: 15).isActive = true
bodyTextLeft.widthAnchor.constraint(equalToConstant: UIScreen.main.bounds.width / 2).isActive = true
bodyTextRight.topAnchor.constraint(equalTo: headerText.bottomAnchor, constant: 15).isActive = true
bodyTextRight.widthAnchor.constraint(equalToConstant: UIScreen.main.bounds.width / 2).isActive = true
bodyTextRight.leadingAnchor.constraint(equalTo: bodyTextLeft.trailingAnchor).isActive = true
HomePageSocialUp 带有图标和约束条件
的基本 headerheightAnchor.constraint(equalToConstant: 325).isActive = true
完成所有这些设置后，我仍然无法让我的 ui 滚动视图在 y 轴上滚动，将我的 homePageAboutUs 文本留在 tabBar 下方并离开屏幕。
我做错了什么？
提前致谢
首先 - UIStackView 的主要目的是安排其子视图，因此向这些子视图添加位置约束是错误的。
接下来，将子视图添加到控制器的“根”视图（例如您的滚动视图）时，请确保将它们限制在安全区域布局指南中。
第三，将滚动视图的内容限制在其内容布局指南中。
我有点接受你的描述，希望我接近你在这里的目的：
向下滚动后：
这是您的代码，经过修改以产生该结果：
class HomeTabBarController: UIViewController {
let homePageView = HomePageView()
override func viewDidLoad() {
super.viewDidLoad()
homePageView.setupHomePage()
view.addSubview(homePageView)
// respect safe area
let g = view.safeAreaLayoutGuide
///constraints
NSLayoutConstraint.activate([
homePageView.leadingAnchor.constraint(equalTo: g.leadingAnchor),
homePageView.topAnchor.constraint(equalTo: g.topAnchor),
homePageView.trailingAnchor.constraint(equalTo: g.trailingAnchor),
homePageView.bottomAnchor.constraint(equalTo: g.bottomAnchor),
])
}
}
class HomePageSocialUp: UIView {
func setupSocialHeader() -> Void {
translatesAutoresizingMaskIntoConstraints = false
backgroundColor = .red
let imgView = UIImageView()
imgView.translatesAutoresizingMaskIntoConstraints = false
addSubview(imgView)
NSLayoutConstraint.activate([
// constrain image view 20-pts on each side
imgView.topAnchor.constraint(equalTo: topAnchor, constant: 20.0),
imgView.leadingAnchor.constraint(equalTo: leadingAnchor, constant: 20.0),
imgView.trailingAnchor.constraint(equalTo: trailingAnchor, constant: -20.0),
imgView.bottomAnchor.constraint(equalTo: bottomAnchor, constant: -20.0),
// Height = 325
imgView.heightAnchor.constraint(equalToConstant: 325.0),
])
if let img = UIImage(named: "myHeaderImage") {
imgView.image = img
}
}
}
class HomePageCarrousel: UIView {
func setupCarrousel() -> Void {
translatesAutoresizingMaskIntoConstraints = false
backgroundColor = .green
let imgView = UIImageView()
imgView.translatesAutoresizingMaskIntoConstraints = false
addSubview(imgView)
NSLayoutConstraint.activate([
// constrain image view 20-pts on each side
imgView.topAnchor.constraint(equalTo: topAnchor, constant: 20.0),
imgView.leadingAnchor.constraint(equalTo: leadingAnchor, constant: 20.0),
imgView.trailingAnchor.constraint(equalTo: trailingAnchor, constant: -20.0),
imgView.bottomAnchor.constraint(equalTo: bottomAnchor, constant: -20.0),
// let's make it 3:2 ratio
imgView.heightAnchor.constraint(equalTo: imgView.widthAnchor, multiplier: 2.0 / 3.0)
])
if let img = UIImage(named: "myCarouselImage") {
imgView.image = img
}
}
}
class HomePageAboutUs: UIView {
let headerText = UILabel()
let bodyTextLeft = UILabel()
let bodyTextRight = UILabel()
func setup() -> Void {
translatesAutoresizingMaskIntoConstraints = false
backgroundColor = .blue
[headerText, bodyTextLeft, bodyTextRight].forEach {
// keep label height to text content
[=10=].setContentHuggingPriority(.required, for: .vertical)
[=10=].setContentCompressionResistancePriority(.required, for: .vertical)
// allow word-wrap
[=10=].numberOfLines = 0
// yellow background
[=10=].backgroundColor = .yellow
[=10=].translatesAutoresizingMaskIntoConstraints = false
addSubview([=10=])
}
NSLayoutConstraint.activate([
// header text 8-pts from Top / Leading / Trailing
headerText.topAnchor.constraint(equalTo: topAnchor, constant: 8.0),
headerText.leadingAnchor.constraint(equalTo: leadingAnchor, constant: 8.0),
headerText.trailingAnchor.constraint(equalTo: trailingAnchor, constant: -8.0),
// left text 8-pts from Bottom of header text, 8-pts Leading
bodyTextLeft.topAnchor.constraint(equalTo: headerText.bottomAnchor, constant: 8.0),
bodyTextLeft.leadingAnchor.constraint(equalTo: leadingAnchor, constant: 8.0),
// right text 8-pts from Bottom of header text, 8-pts Trailing
bodyTextRight.topAnchor.constraint(equalTo: headerText.bottomAnchor, constant: 8.0),
bodyTextRight.trailingAnchor.constraint(equalTo: trailingAnchor, constant: -8.0),
// 8-pts between left and right text
bodyTextRight.leadingAnchor.constraint(equalTo: bodyTextLeft.trailingAnchor, constant: 8.0),
// left and right text equal width
bodyTextLeft.widthAnchor.constraint(equalTo: bodyTextRight.widthAnchor),
// constrain Bottom of both to <= 8 (at least 8-pts
bodyTextLeft.bottomAnchor.constraint(lessThanOrEqualTo: bottomAnchor, constant: -8.0),
bodyTextRight.bottomAnchor.constraint(lessThanOrEqualTo: bottomAnchor, constant: -8.0),
])
headerText.font = .systemFont(ofSize: 20, weight: .regular)
bodyTextLeft.font = .systemFont(ofSize: 16, weight: .regular)
bodyTextRight.font = .systemFont(ofSize: 16, weight: .regular)
// texxt alignment
headerText.textAlignment = .center
bodyTextLeft.textAlignment = .left
bodyTextRight.textAlignment = .right
// some sample text
headerText.text = "This is the text for the About Us Header label. It will, of course, wrap onto multiple lines when needed, and auto-size it's height to fit the text."
bodyTextLeft.text = "Left label with\nembedded newlines\nso we can see it grow\nto fit the text.\nLine 5\nLine 6\nLine 7"
bodyTextRight.text = "Right label will wrap if needed. The one with the most lines will determine the bottom."
}
}
class HomePageView: UIScrollView {
var homePageCarrousel: HomePageCarrousel?
var homePageSocial: HomePageSocialUp?
var homePageAboutUs: HomePageAboutUs?
var stackView = UIStackView()
func setupHomePage() {
translatesAutoresizingMaskIntoConstraints = false
homePageCarrousel = HomePageCarrousel()
homePageSocial = HomePageSocialUp()
homePageAboutUs = HomePageAboutUs()
guard let homePageSocial = homePageSocial, let homePageCarrousel = homePageCarrousel, let homePageAboutUs = homePageAboutUs else { return }
homePageSocial.setupSocialHeader()
stackView.addArrangedSubview(homePageSocial)
homePageCarrousel.setupCarrousel()
stackView.addArrangedSubview(homePageCarrousel)
homePageAboutUs.setup()
stackView.addArrangedSubview(homePageAboutUs)
addSubview(stackView)
stackView.translatesAutoresizingMaskIntoConstraints = false
stackView.axis = .vertical
stackView.spacing = 10
setLayout()
}
func setLayout(){
// constrain stackView to scroll view's Content Layout Guide
let g = self.contentLayoutGuide
///stackview
NSLayoutConstraint.activate([
self.stackView.leadingAnchor.constraint(equalTo: g.leadingAnchor),
self.stackView.topAnchor.constraint(equalTo: g.topAnchor),
self.stackView.trailingAnchor.constraint(equalTo: g.trailingAnchor),
self.stackView.bottomAnchor.constraint(equalTo: g.bottomAnchor),
// stack view width is scroll view's frame layout guide width
stackView.widthAnchor.constraint(equalTo: self.frameLayoutGuide.widthAnchor),
])
}
}