Strange behavior of Height constraint of UITableView cell in IOS 15 - ios

Question

After upgrade on IOS 15 my previous code start works strange.
I have UITableView with cells with embedded views. When it loads in viewDidLoad cell's height constrain that I setup in storyboard become active and cell become close. Tap on cell makes height constraint become not active and cell open.
Height constraint for foldView
But in IOS 15 cell always open when loading. Even if height constraint is active.
here my code that makes it open or close:
var expanded: Bool = false {
didSet {
let duration = CATransaction.animationDuration()
UIView.animate(withDuration: duration) {
self.arrow.transform = self.expanded ? CGAffineTransform(rotationAngle: .pi / 2) : .identity
self.height.priority = .defaultHigh
self.height.isActive = !self.expanded
self.foldView.alpha = self.expanded ? 1 : 0
self.container.layoutIfNeeded()
}
}
}
and this is how I add embedded view:
func addEmbeddedView(_ view: UIView) {
self.foldView.subviews.forEach { $0.removeFromSuperview() }
self.foldView.addSubview(view)
view.translatesAutoresizingMaskIntoConstraints = false
let constraints = [
view.leadingAnchor.constraint(equalTo: self.foldView.leadingAnchor),
view.trailingAnchor.constraint(equalTo: self.foldView.trailingAnchor),
view.topAnchor.constraint(equalTo: self.foldView.topAnchor),
view.bottomAnchor.constraint(equalTo: self.foldView.bottomAnchor, constant: -9)
]
constraints[3].priority = .defaultHigh
NSLayoutConstraint.activate(constraints)
}
BUT! if I tap on cell from
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
guard let cell = tableView.cellForRow(at: indexPath) as? TableViewCell else { return }
tableView.beginUpdates()
cell.expanded.toggle()
tableView.fixCellBounds()
tableView.endUpdates()
}
all works as expected and cell open and close in IOS 15 too.
Any suggestions what it could be?
As I assume in IOS 15 was some changes in AutoLayout that may affect my code..
Here my full custom cell class:
import UIKit
class CustomTableViewCell: UITableViewCell {
#IBOutlet weak var headerLabel: UILabel!
#IBOutlet weak var descriptionLabel: UILabel!
#IBOutlet weak var arrowImage: UIImageView!
#IBOutlet weak var container: UIView!
#IBOutlet weak var foldView: UIView!
#IBOutlet weak var arrow: UIImageView!
let layer1 = CALayer(), layer2 = CALayer(), layer3 = CALayer()
var expanded: Bool = false {
didSet {
let duration = CATransaction.animationDuration()
UIView.animate(withDuration: duration) {
self.arrow.transform = self.expanded ? CGAffineTransform(rotationAngle: .pi / 2) : .identity
self.height.priority = .defaultHigh
self.height.isActive = !self.expanded
self.foldView.alpha = self.expanded ? 1 : 0
self.container.layoutIfNeeded()
}
}
}
#IBOutlet weak var height: NSLayoutConstraint!
override func awakeFromNib() {
super.awakeFromNib()
self.expanded = false
container.layer.cornerRadius = 8
container.layer.cornerCurve = .continuous
container.backgroundColor = Colors_8_5.offWhite.color
self.contentView.backgroundColor = .clear
self.container.clipsToBounds = true
self.contentView.clipsToBounds = false
self.clipsToBounds = false
self.selectionStyle = .none
self.backgroundColor = .clear
[layer1, layer2, layer3].forEach {
$0.masksToBounds = false
$0.backgroundColor = UIColor.clear.cgColor
self.contentView.layer.insertSublayer($0, at: 0)
}
}
func configure(with model: CustomCellModel) {
self.headerLabel.attributedText = model.header
self.descriptionLabel.attributedText = model.text
self.descriptionLabel.isHidden = model.text == nil
}
override func setSelected(_ selected: Bool, animated: Bool) {
}
func addEmbeddedView(_ view: UIView) {
self.foldView.subviews.forEach { $0.removeFromSuperview() }
self.foldView.addSubview(view)
view.translatesAutoresizingMaskIntoConstraints = false
let constraints = [
view.leadingAnchor.constraint(equalTo: self.foldView.leadingAnchor),
view.trailingAnchor.constraint(equalTo: self.foldView.trailingAnchor),
view.topAnchor.constraint(equalTo: self.foldView.topAnchor),
view.bottomAnchor.constraint(equalTo: self.foldView.bottomAnchor, constant: -9)
]
constraints[3].priority = .defaultHigh
NSLayoutConstraint.activate(constraints)
}
override func layoutSubviews() {
super.layoutSubviews()
[layer1, layer2, layer3].forEach {
$0.frame = container.frame
}
layer1.CustomapplySketchShadow(color: .black, alpha: 0.04, x: 0, y: 4, blur: 8, spread: 0)
layer2.CustomapplySketchShadow(color: .black, alpha: 0.04, x: 0, y: 16, blur: 24, spread: 0)
layer3.CustomapplySketchShadow(color: .black, alpha: 0.04, x: 0, y: 24, blur: 32, spread: 0)
}
}
extension CALayer {
func CustomapplySketchShadow(
color: UIColor = .black,
alpha: Float = 0.2,
x: CGFloat = 0,
y: CGFloat = 2,
blur: CGFloat = 4,
spread: CGFloat = 0)
{
shadowColor = color.cgColor
shadowOpacity = alpha
shadowOffset = CGSize(width: x, height: y)
shadowRadius = blur / 2
if spread == 0 {
shadowPath = UIBezierPath(rect: self.bounds).cgPath
} else {
let dx = -spread
let rect = bounds.insetBy(dx: dx, dy: dx)
shadowPath = UIBezierPath(rect: rect).cgPath
}
}
}