Multiple checkbox buttons in swift 3 - swift

Question

I have working code for a checkbox in swift, but the project I'm looking to build has about 50 or so checkboxes. In keeping with the goal of less code is best I'm wondering if there's a better way to write it all out than to just copy and paste. I tried linking multiple buttons to one iboutlet but I guess that was not the way to go seeing as how a different button would register selected then the one tapped.
working code:
#IBOutlet weak var buttonOne: UIButton!
var isButtonClicked: Bool!
override func viewDidLoad() {
super.viewDidLoad()
isButtonClicked = false
}
#IBAction func buttonClicked(_ sender: UIButton) {
if isButtonClicked == true {
isButtonClicked = false
}
else {
isButtonClicked = true
}
if isButtonClicked == true {
buttonOne.setImage(#imageLiteral(resourceName: "ButtonClicked"), for: .normal)
}
else {
buttonOne.setImage(#imageLiteral(resourceName: "ButtonUnclicked"), for: .normal)
}
}

Answer 1

I would suggest you to create a class for the checkboxes. Example:
class CheckBox: UIButton {
var checked = false {
didSet {
if checked == true {
self.setImage(#imageLiteral(resourceName: "ButtonClicked"), for: .normal)
}
else {
self.setImage(#imageLiteral(resourceName: "ButtonUnclicked"), for: .normal)
}
}
}
override init(frame: CGRect) {
super.init(frame: frame)
self.addTarget(self, action: #selector(tapped), for: .touchUpInside)
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
func tapped() {
self.checked = !self.checked
if checked == true {
self.setImage(#imageLiteral(resourceName: "ButtonClicked"), for: .normal)
}
else {
self.setImage(#imageLiteral(resourceName: "ButtonUnclicked"), for: .normal)
}
}
}
You can then use this class to create checkboxes programmatically using a for loop. Example:
for i in 0..<50 {
let checkbox = CheckBox(frame: CGRect(x: 0, y: i * 40, width: 40, height: 40))
checkbox.tag = 1
self.someView.addSubview(checkbox)
}