How do I adjust my popover to the size of the content in my tableview in swift?

Question

I\'m using popoverPresentationController to show my popover. The UITableViewController used to show as popover is created programmatically and will usu

Answer 1

Simple dynamic answer for Swift 4.x and Swift 5.x involving no size-computation (modern version of Bo Frese answer):

private var contentSizeObserver : NSKeyValueObservation?

override func viewWillAppear(_ animated: Bool) {
    super.viewWillAppear(animated)

    contentSizeObserver = tableView.observe(\.contentSize) { [weak self] tableView, _ in
        self?.preferredContentSize = CGSize(width: 320, height: tableView.contentSize.height) // Here I fixed the width but you can do whatever you want
    }
}

override func viewDidDisappear(_ animated: Bool) {
    super.viewDidDisappear(animated)

    contentSizeObserver?.invalidate()
    contentSizeObserver = nil
}