Save Label Text and Button States

As already commented by Claude31, it's a very strange result.

It implies `updateButtonPercentage()` is called before iOS establishes the connection to IBOutlets. You may be doing some odd things in somewhere you are not showing to us.

Anyway, the behavior you described cannot be reproduced with your code shown. You should better find where you are doing such odd things.

Here is the original version with the suggestions from OOPer

@IBOutlet weak var progressLabel: UILabel!
    @IBOutlet var toggleButtons: [PRToggleButton] = []
    func updateButtonPercentage() {
        let countSelected = toggleButtons.map{$0.isSelected ? 1 : 0}.reduce(0, +)
        if !toggleButtons.isEmpty {
            let percent = Int(100.0 * Double(countSelected) / Double(toggleButtons.count))
            progressLabel.text = "\(percent) % Complete"
        } else {
            progressLabel.text = "--- % Complete"
        }
    }
    func saveButtonState(_ button: PRToggleButton) {
        let buttonKey = "saved\(button.tag)"
        UserDefaults.standard.set(button.isSelected, forKey: buttonKey)
    }
    func loadButtonState(_ button: PRToggleButton) {
        let buttonKey = "saved\(button.tag)"
        button.isSelected = UserDefaults.standard.bool(forKey: buttonKey)
    }
    override func viewDidLoad() {
        super.viewDidLoad()
    }
    override func viewWillAppear(_ animated: Bool) {
        for button in toggleButtons {
            loadButtonState(button)
        }
        updateButtonPercentage()
    }
        /
    @IBAction func ButtonPressed (_ sender: PRToggleButton) {
        sender.isSelected = !sender.isSelected
        updateButtonPercentage()
        saveButtonState(sender)
    }
    @IBAction func closeView(_ sender: Any) {
        self.dismiss(animated: true, completion: nil)
    }
}

Below is what I changed from line 8 above as well as deleting the } else { statement in lines 9 and 10 above. This seems to work, but the button states are not saved when the view is closed and reopened. The percentage remains the same, but without the buttons remaining selected, the user can't tell from which buttons the percent was generated. I've also posted the code for the custom button that I'm using below.

unc updateButtonPercentage() {
        let countSelected = toggleButtons.map{$0.isSelected ? 1 : 0}.reduce(0, +)
        if !toggleButtons.isEmpty {
            let percent = Int(100.0 * Double(countSelected) / Double(toggleButtons.count))
            progressLabel.text = String(percent) + " % Complete"
        }
    }

Custom Button:

class PRToggleButton: UIButton {
    var isOn = false
    override init(frame: CGRect) {
        super.init(frame: frame)
        initButton()
    }
    required init?(coder aDecoder: NSCoder){
        super.init(coder: aDecoder)
        initButton()
    }
    func initButton(){
        layer.borderWidth = 2.0
        layer.borderColor = UIColor.blue.cgColor
        layer.cornerRadius = frame.size.height/3
        setTitleColor(UIColor.blue, for: .normal)
        addTarget(self, action: #selector(PRToggleButton.buttonPressed), for: .touchUpInside)
    }
    @objc func buttonPressed() {
        activateButton(bool: !isOn)
    }
    func activateButton(bool: Bool) {
        isOn = bool
        let color = bool ? UIColor.blue : .clear
        let titleColor = bool ? .white : UIColor.blue
        setTitleColor(titleColor, for: .normal)
        backgroundColor = color
    }
}

Hey Claude, how can I retrieve the state of my selected buttons if I'm saving buttons like this:

UserDefaults.standard.set([sender.title : String(sender.isSelected)], forKey: "isSaved")

I want to achive this result.

Thanks in advance!

That's an incredibly ofld thread.

You'd better create a new thread (may be with a reference to this one) and explain in detail what you want to achieve and the problem you face.

Awaiting for Moderator to approve my Post.

Here is the thread.
https://forums.developer.apple.com/thread/132583