Custom checkbox in swift 3

Question

am new to swift,

I had two check box buttons on view controller, when click single check box button(Indvidual) it's check and uncheck working fine, but my aim is when I check "PICK" checkBox button uncheck the "Drop Check Box"

if I can select PickUP checkBox Drop should uncheck if select Drop CheckBox PickUP Should uncheck but its not happening its selecting Both

this is my code for single check

@IBAction func PushButtonClick(_ sender: UIButton) {

        let buttontag = sender.tag


        if isChecked {
            sender.setImage(UIImage(named:"check1"), for: .normal)
            print("checked")


            isChecked = false
        }
        else {
            sender.setImage( UIImage(named:"uncheck1"), for: .normal)
            isChecked = true
            print("uncheck")

        }
    }

    @IBAction func DropButtonClick(_ sender: UIButton) {


        if isChecked {
            sender.setImage(UIImage(named:"check1"), for: .normal)
            print("checked")
            isChecked = false
        }
        else {
            sender.setImage( UIImage(named:"uncheck1"), for: .normal)
            isChecked = true
            print("uncheck")

        }

    }

if one check box check check other check box Is unchecked how to over come this problem........

Answer 1

step-1

create one button array for store the buttons

var buttonscheck = [UIButton]()

step-2

on page load add the buttons to that array, for e.g

 override func viewDidLoad() {
    super.viewDidLoad()
   buttonscheck.append(btnPick)
   buttonscheck.append(btnDrop)
}

as well as create the common func for both buttons, for e.g

 @IBAction func PushButtonClick(_ sender: UIButton) {

step-3

before assign the check remove the previous selection of your UIbuttons, for e.g

 @IBAction func PushButtonClick(_ sender: UIButton) {

    // clear previous selection of your buttons
    for getbutton in buttonscheck {
     getbutton.setImage( UIImage(named:"uncheck1"), for: .normal)
    } 
  // finally set the selected image for your button and it will hold the current button
   sender.setImage(UIImage(named:"check1"), for: .normal)
 }