👀 Views: 1857 💬 Answers: 1 📅 Created: 2025-06-12

ios uikit userdefaults Swift

This might be a silly question, but This might be a silly question, but I'm working with a peculiar scenario with a `UISwitch` component in my iOS 16 app. I've set up a toggle switch that is supposed to save its state in `UserDefaults` when the user toggles it. However, I'm experiencing unexpected behavior where the switch state does not continue between app launches. I've implemented the following code in my view controller: ```swift class SettingsViewController: UIViewController { @IBOutlet weak var toggleSwitch: UISwitch! override func viewDidLoad() { super.viewDidLoad() // Load saved state let switchState = UserDefaults.standard.bool(forKey: "toggleSwitchState") toggleSwitch.isOn = switchState } @IBAction func switchToggled(_ sender: UISwitch) { // Save state UserDefaults.standard.set(sender.isOn, forKey: "toggleSwitchState") } } ``` The `viewDidLoad` method correctly retrieves the saved state from `UserDefaults`, and the `switchToggled` action updates the stored value whenever the switch is toggled. However, when I close and reopen the app, the switch always appears in the off position, regardless of its last state. I've confirmed that the `UserDefaults` key is not being overwritten elsewhere in the code, nor am I resetting it unintentionally. To troubleshoot, I added debug print statements like this: ```swift print("Switch State Loaded: \(switchState)") ``` This prints the correct state when the app is launched, yet the switch remains off visually. I also checked the `UserDefaults` directly using the following code in the console: ```swift UserDefaults.standard.bool(forKey: "toggleSwitchState") ``` Which returns `true` when the switch was previously toggled on. I am at a loss as to why the UI is not reflecting the saved state. Are there any peculiarities with `UISwitch` or `UserDefaults` in iOS 16 that I might be overlooking? Any suggestions on how to resolve this scenario would be greatly appreciated! Any help would be greatly appreciated! My development environment is Windows. What am I doing wrong?