swift - Add subtitle under the title in navigation bar controller in Xcode

Question

So I'm wanting to add a "subtitle" under the title in the navigation bar in navigation controller.

Mostly everything I look up so far wants me to use CGRect. I don't know a whole lot what that is and it sounds like its wanting me to create an entire new view which is not what I am wanting to do.

My question is, is there a dot method to adding a subtitle view easily?

The closest thing I found was posted on stack overflow and here is the link:

Create a subtitle in navigationbar

Apparently last year this worked but now I am getting errors and it's in my viewDidLoad...

I tried this:

self.navigationController?.navigationItem.prompt = "Subtitle Here"

It's the only thing that won't show any errors but still doesn't work. It literally does nothing. At least nothing visible at run time.

On a side note, swift is preferred. Thanks!

Answer 1

Here is my version using a stack view on an extension.

extension UINavigationItem {
    func setTitle(title:String, subtitle:String) {
        
        let one = UILabel()
        one.text = title
        one.font = UIFont.systemFont(ofSize: 17)
        one.sizeToFit()
        
        let two = UILabel()
        two.text = subtitle
        two.font = UIFont.systemFont(ofSize: 12)
        two.textAlignment = .center
        two.sizeToFit()
        
        let stackView = UIStackView(arrangedSubviews: [one, two])
        stackView.distribution = .equalCentering
        stackView.axis = .vertical
        stackView.alignment = .center
        
        let width = max(one.frame.size.width, two.frame.size.width)
        stackView.frame = CGRect(x: 0, y: 0, width: width, height: 35)
        
        one.sizeToFit()
        two.sizeToFit()
        
        self.titleView = stackView
    }
}