Dynamic Table View Header Height

DynamicHeaderExample.swift

override func viewDidLayoutSubviews() {
    super.viewDidLayoutSubviews()

    sizeTableViewHeaderToFit()
}

// MARK: - Dynamic Header Height

func sizeTableViewHeaderToFit() {
    guard let headerView = tableView.tableHeaderView else {
        return
    }
    let size = headerView.systemLayoutSizeFitting(UIView.layoutFittingExpandedSize)

    if headerView.frame.size.height != size.height {
        headerView.frame.size.height = size.height
        tableView.tableHeaderView = headerView
        tableView.layoutIfNeeded()
    }
}