AutoFit containerView size to a tableView

Question

I have a ViewControllerA with scroll containing a UIView called containerView. This containerView is being filled with a tableView. The viewControllerA must have an adaptive height to the size of the tableView and I don't follow it. I have tried several solutions proposed here, but none of them works for me. I have set in viewControllerA:

public static var containerView: UIView {
    let view = UIView()
    view.setContentHuggingPriority(.init(rawValue: 0), for: .horizontal)
    view.setContentHuggingPriority(.init(rawValue: 0), for: .vertical)
    return view
}

var heightContainer = CGFloat(870)
var heightConstraintContainer = NSLayoutConstraint()

init(vcA: ViewControllerA, vcB: ViewControllerB, vcC: ViewControllerC) {
    self.viewControllerA = vcA
    self.viewControllerB = vcB
    self.viewControllerC = vcC
    self.currentVC = viewControllerA
    super.init(nibName: nil, bundle: nil)

    add(asChildViewController: currentVC)
}
func setupView() {
    containerView.translatesAutoresizingMaskIntoConstraints = false
    scrollView.translatesAutoresizingMaskIntoConstraints = false
}

private func add(asChildViewController viewController: UIViewController) {
    addChild(viewController)
    containerView.addSubview(viewController.view)
    viewController.view.translatesAutoresizingMaskIntoConstraints = false
    NSLayoutConstraint.activate([
        viewController.view.topAnchor.constraint(equalTo: containerView.topAnchor),
        viewController.view.leadingAnchor.constraint(equalTo: containerView.leadingAnchor),
        viewController.view.trailingAnchor.constraint(equalTo: containerView.trailingAnchor),
        viewController.view.bottomAnchor.constraint(equalTo: containerView.safeAreaLayoutGuide.bottomAnchor)
        ])

    viewController.didMove(toParent: self)
}

private func setupConstraints() {
containerView.setContentHuggingPriority(.defaultHigh, for: .vertical)

// heightContainer = currentVC.view.frame.height
// heightConstraintContainer =  containerView.heightAnchor.constraint(greaterThanOrEqualToConstant: heightContainer)

NSLayoutConstraint.activate([
    containerView.topAnchor.constraint(equalTo: segmentedControl.bottomAnchor, constant: 30),
    containerView.leadingAnchor.constraint(equalTo: scrollView.leadingAnchor),
    containerView.trailingAnchor.constraint(equalTo: scrollView.trailingAnchor),
    containerView.bottomAnchor.constraint(equalTo: scrollView.bottomAnchor),
    containerView.widthAnchor.constraint(equalTo: scrollView.widthAnchor),
    // containerView.heightAnchor.constraint(equalTo: scrollView.heightAnchor), 
    // heightConstraintContainer,
    scrollView.topAnchor.constraint(equalTo: view.topAnchor),
    scrollView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
    scrollView.trailingAnchor.constraint(equalTo: view.trailingAnchor),
    scrollView.bottomAnchor.constraint(equalTo: view.bottomAnchor),
    scrollView.widthAnchor.constraint(equalTo: view.widthAnchor),
    scrollView.heightAnchor.constraint(equalTo: view.heightAnchor)
])
}

I have set in viewControllerB:

tableView.translatesAutoresizingMaskIntoConstraints = false
private func setupConstraints() {
    NSLayoutConstraint.activate([
        tableView.topAnchor.constraint(equalTo: view.safeAreaLayoutGuide.topAnchor, constant: 32),
        tableView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
        tableView.trailingAnchor.constraint(equalTo: view.trailingAnchor),
        tableView.bottomAnchor.constraint(equalTo: view.bottomAnchor)
        ])
}

What am I doing wrong? What am I forgetting or what should I do so that the viewcontrollerB containing the table 'notifies' the viewControllerA that its size is 'X' and the view is updated?

Thank you very much for your help. Regards

AutoFit containerView size to a tableView

0 Answers