Keep UIButton Selected/Highlighted after touch

Question

I\'d like my button to remain highlighted after the user taps it. If the user taps the button again I\'d like it to become de-selected/unhighlighted. I\'m not sure how to go

Answer 1

func buttonPressed(_ sender: UIButton) {

    // "button" is a property

    if button.isSelected {
        button.setImage(UIImage(named: "filled-heart"), for: .normal)
        button.isSelected = false
    }else {
        button.setImage(UIImage(named: "empty-heart"), for: .selected)
        button.isSelected = true
    }
}