How can I make empty circle on baseball out count? - ios

Question

I am making baseball outcount code based on FoodTracker source code. Here's my code but empty circle doesn't count in this code. How can I make the empty circle rating? I would appreciate if you guys can help me out. Thank you!!
///////
import UIKit
class RatingControl: UIView {
// MARK: Properties
var rating = 0 {
didSet {
setNeedsLayout()
}
}
var ratingButtons = [UIButton]()
var spacing = 3
var circles = 3
// MARK: Initialization
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
let filledCircleImage = UIImage(named: "checkedRed")
let emptyCircleImage = UIImage(named: "UncheckedRed")
for _ in 0..<3 {
let button = UIButton()
button.setImage(emptyCircleImage, forState: .Normal)
button.setImage(filledCircleImage, forState: .Selected)
button.setImage(filledCircleImage, forState: [.Highlighted, .Selected])
button.adjustsImageWhenHighlighted = false
button.addTarget(self, action: "ratingButtonTapped:", forControlEvents: .TouchDown)
ratingButtons += [button]
addSubview(button)
}
}
override func layoutSubviews() {
// Set the button's width and height to a square the size of the frame's height.
let buttonSize = Int(frame.size.height)
var buttonFrame = CGRect(x: 0, y: 0, width: buttonSize, height: buttonSize)
// Offset each button's origin by the length of the button plus spacing.
for (index, button) in ratingButtons.enumerate() {
buttonFrame.origin.x = CGFloat(index * (buttonSize + spacing))
button.frame = buttonFrame
}
updateButtonSelectionStates()
}
override func intrinsicContentSize() -> CGSize {
let buttonSize = Int(frame.size.height)
let width = (buttonSize + spacing) * circles
return CGSize(width: width, height: buttonSize)
}
// MARK: Button Action
func ratingButtonTapped(button: UIButton) {
rating = ratingButtons.indexOf(button)! + 1
updateButtonSelectionStates()
}
func updateButtonSelectionStates() {
for (index, button) in ratingButtons.enumerate() {
// If the index of a button is less than the rating, that button should be selected.
button.selected = index < rating
}
}
}

Answer 1

if you want zero to count then return 0 as a possible button action. Your rating is already set to zero so technically it does count. If you accidentally tap the first circle and want to undo it you can try something like this in ratingButtonTapped
//rating = ratingButtons.index(of: button)! + 1
rating = (rating == 1) && (ratingButtons.index(of: button) == 0) ? 0 : (ratingButtons.index(of: button)! + 1)