How to handle multiple radio button on "addTarget" swift 3.0? - swift3

Question

When I create multiple radio buttons through a for loop and using the function addTarget, how can I handle multiple radio buttons using addTarget by tag or sender in swift 3.0?

Answer 1

Here is the solution change it according to your requirement
(SWIFT 4)
// create button array to save all button
var buttonArray = [UIButton]()
func createButtons(){
//create 5 buttons
for i in 1...5 {
let button = UIButton(frame: CGRect(x: 0, y: i*55, width: 130, height: 50))
//set same background for each button
button.backgroundColor = UIColor.darkGray
// set different ittle for button
button.setTitle("Button No \(i)", for: .normal)
// set different tag to differentiate betwwen button
button.tag = i
// set same target for each button
button.addTarget(self, action: #selector(buttonTapped(_:)), for: .touchUpInside)
buttonArray.append(button)
//add all buttons to main view
view.addSubview(button)
}
// we make first button of different color so that it can act as radio button
let firstBtn = buttonArray[0]
firstBtn.backgroundColor = UIColor.green
}
#objc func buttonTapped(_ tappedBtn : UIButton){
// here we get tapped button so from array of button we match the selected one using tag and make it of different color all all other buttons of some different color
for button in buttonArray {
if(button.tag == tappedBtn.tag){
button.backgroundColor = UIColor.green
}else{
button.backgroundColor = UIColor.darkGray
}
}
}