Favorite button programmatically Swift-CodePudding

I'm new to Swift. I would like to know if possible add a "favorite" Button programmatically inside a view controller that inherits from UITableView? I need to say too that I wanna use this button to favorite a result from google API. This is possible once the result comes from a search's result and not from a specific list? PS: I'm doing my project in UIKIT. Thank you.

CodePudding user response：

Of course your view controller will then inherit from UITableViewController, not UITableView.

Here are the basics:

    var favoriteButtonItem: UIBarButtonItem?
    var isFavorite: Bool = <...initial value...>
    var favoriteImage
    {
        return UIImage(systemName: "heart"   (isFavorite ? ".fill" : ""))
    }

    favoriteButtonItem = UIBarButtonItem(image: favoriteImage,
                                         style: .plain,
                                         target: self,
                                         action: #selector(toggleFavorite))

    navigationItem.rightBarButtonItem = favoriteButtonItem

    @objc private func toggleFavorite()
    {
        isFavorite = !isFavorite
        favoriteButtonItem.image = favoriteImage

        <...logic to process change...>
    }

You'll need to add logic to disable or not show yet favoriteButtonItem until the backend has returned the current value.