How to increase and decrease UIView height by codebase using Swift

Question

In my case, I have to add UIView in top of the Tableview but it should be inside Tableview because of scrolling . Here, I drag and dropped UIView on topside tableview. Now, some scenario I need to increase and reduce height of the UIView. I tried to add constraints but its not available. How to achieve this by codebase?

Tableview with UIView Storyboard Hierarchy

Storyboard Design

Disabled Constraints For UIView

Answer 1

Constraints is not working with table header view. you can set table header using custom view and update its frame

Set a custom view

Set table header and update it's frame

class ViewController: UIViewController {

    @IBOutlet var tableView: UITableView!

    @IBOutlet var tableHeader: UIView!

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view.
        loadHeader()
    }

    func loadHeader() {
        tableHeader.frame = CGRect(x: 0, y: 0, width: self.view.frame.size.width, height: 300)
        tableView.tableHeaderView = tableHeader
    }
}