detect screen unlock events in IOS Swift

Question

How can i detect screen unlock events on iPhone? When the user unlocks it, I want to perform an action in my app. I searched on googled but only found code related to object

Answer 1

I just updated the Code

just call the registerforDeviceLockNotification() function into app delegate didfinishLunch function (AppDelegate.swift)

if you are using session then call the registerforDeviceLockNotification() function into willConnectTo (SceneDelegate.swift)

example code (AppDelegate.swift)

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
        // Override point for customization after application launch.
        registerforDeviceLockNotification()
        return true
    }
    
    func registerforDeviceLockNotification() {
        //Screen lock notifications
        CFNotificationCenterAddObserver(CFNotificationCenterGetDarwinNotifyCenter(),     //center
            Unmanaged.passUnretained(self).toOpaque(),     // observer
            displayStatusChangedCallback,     // callback
            "com.apple.springboard.lockcomplete" as CFString,     // event name
            nil,     // object
            .deliverImmediately)

    }
    
    private let displayStatusChangedCallback: CFNotificationCallback = { _, cfObserver, cfName, _, _ in
        guard let lockState = cfName?.rawValue as String? else {return}

        if (lockState == "com.apple.springboard.lockcomplete") {
               print("DEVICE LOCKED")
           } else {
               print("LOCK STATUS CHANGED")
           }

       
    }

Example Code (SceneDelegate.swift)

func registerforDeviceLockNotification() {
    //Screen lock notifications
    CFNotificationCenterAddObserver(CFNotificationCenterGetDarwinNotifyCenter(),     //center
        Unmanaged.passUnretained(self).toOpaque(),     // observer
        displayStatusChangedCallback,     // callback
        "com.apple.springboard.lockcomplete" as CFString,     // event name
        nil,     // object
        .deliverImmediately)

}

private let displayStatusChangedCallback: CFNotificationCallback = { _, cfObserver, cfName, _, _ in
    guard let lockState = cfName?.rawValue as String? else {return}

    if (lockState == "com.apple.springboard.lockcomplete") {
           print("DEVICE LOCKED")
       } else {
           print("LOCK STATUS CHANGED")
       }

   
}