Self-sizing custom UIView - ios

Question

I'm trying to compute the height of my custom UIView that's based on the contents of my UIStackView:
class CustomView: UIView {
let nameLabel = UILabel()
let descriptionLabel = UILabel()
let stackView = UIStackView()
init() {
super.init(frame: .zero)
nameLabel.numberOfLines = 0
descriptionLabel.numberOfLines = 0
stackView.addArrangedSubviews([nameLabel, descriptionLabel])
stackView.axis = .vertical
addSubview(stackView)
// constrain stack view to four sides
widthAnchor.constrain(to: 100) // hold width
}
func updateText(name: String, description: String) {
nameLabel.text = name
descriptionLabel.text = description
// resize custom view to fit text in nameLabel / descriptionLabel
}
}
The contents of nameLabel and descriptionLabel are populated at a later time. I'd like to resize the custom view based on the height of the labels. How can I achieve this?

Answer 1

add constraint to stackView and set translatesAutoresizingMaskIntoConstraints property false.
class CustomView: UIView {
let nameLabel = UILabel()
let descriptionLabel = UILabel()
let stackView = UIStackView()
init() {
super.init(frame: .zero)
nameLabel.numberOfLines = 0
descriptionLabel.numberOfLines = 0
stackView.addArrangedSubview(nameLabel)
stackView.addArrangedSubview(descriptionLabel)
stackView.axis = .vertical
stackView.distribution = .fillProportionally
addSubview(stackView)
stackView.translatesAutoresizingMaskIntoConstraints = false
stackView.leadingAnchor.constraint(equalTo: self.leadingAnchor, constant: 0.0).isActive = true
stackView.trailingAnchor.constraint(equalTo: self.trailingAnchor, constant: 0.0).isActive = true
stackView.topAnchor.constraint(equalTo: self.topAnchor, constant: 0.0).isActive = true
stackView.bottomAnchor.constraint(equalTo: self.bottomAnchor, constant: 0.0).isActive = true
// constrain stack view to four sides
// hold width
translatesAutoresizingMaskIntoConstraints = false
widthAnchor.constraint(equalToConstant: 100).isActive = true
}
required init?(coder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
func updateText(name: String, description: String) {
nameLabel.text = name
descriptionLabel.text = description
// resize custom view to fit text in nameLabel / descriptionLabel
}
}