how to remove UIButton from stackview if there is no content

Question

I have four buttons in a stackView in a collectionViewCell

I am performing segue to a newVC if the button is tapped, the content i am displaying in the newVC is coming via JSON. If the url is empty or url.characters.count == 0 for the respective button, i want to remove it from the cell and resize the rest of the buttons equally in the cell. How can i achieve that.

Answer 1

With UIStackView it is very simple. Just mark the button as hidden and the UIStackView will resize itself.

func buttonTapped(_ button: UIButton) {
    button.isHidden = shouldHideButton()

    performSegue(withIdentifier: "YourSegueIdentifier", sender: self)
}

func shouldHideButton() {
    ...
}

Also as venkat mentioned you can use removeArrangedSubview(_:) instead of just hiding, which will remove the button permanently.

I recommand you to read UIStackView documentation.

Answer 2

Since you're working in a StackView, the other items inside it will automatically adjust when we hide your UIButton.

In order to hide you UIButton based on your URL's character count, we can do the following:

button.isHidden = url.characters.count == 0

To simplify even further, we can just check for .isEmpty like so:

button.isHidden = url.isEmpty