NSUserDefaults and KVO issues

by

I suggest making use of the appropriate notification: NSUserDefaultsDidChangeNotification.

Search for AppPrefs in the Apple Documentation within Xcode and it’ll show an example app which does exactly what you want to do. Just compile and run! It makes use of the NSUserDefaultsDidChangeNotification.

This is the code being used to register an observer:

[[NSNotificationCenter defaultCenter] addObserver:self
                                         selector:@selector(defaultsChanged:)
                                             name:NSUserDefaultsDidChangeNotification
                                           object:nil];

More Related Contents:

  1. iOS if else statement not working [closed]
  2. How do I size a UITextView to its content?
  3. Left Align Cells in UICollectionView
  4. How do I write dispatch_after GCD in Swift 3, 4, and 5?
  5. Cordova app not displaying correctly on iPhone X (Simulator)
  6. Storyboard doesn’t contain a view controller with identifier
  7. UITapGestureRecognizer – single tap and double tap
  8. Reading NFC Tags with iPhone 6 / iOS 8
  9. Execute code in Launch Screen
  10. Detecting a point in a MKPolygon broke with iOS7 (CGPathContainsPoint)
  11. How do I get an ISO 8601 date on iOS?
  12. Sort an NSMutableDictionary
  13. App rejected because of “Missing Push Notification Entitlement”
  14. Differences between UDID and UUID [duplicate]
  15. iOS 8 Auto cell height – Can’t scroll to last row
  16. How do you get an iPhone’s device name
  17. The operation couldn’t be completed. (com.facebook.sdk error 2.) ios6
  18. Swift 3.1 deprecates initialize(). How can I achieve the same thing?
  19. NavigationLink Works Only for Once
  20. How to add a ‘Done’ button to numpad keyboard in iOS
  21. iOS 7 Status Bar Collides With NavigationBar
  22. Custom Cell Row Height setting in storyboard is not responding
  23. Maintaining good scroll performance when using AVPlayer
  24. iOS Segue – Left to Right –
  25. IOS Video Compression Swift iOS 8 corrupt video file
  26. How to limit UITableView row reordering to a section
  27. What is a monospace font in iOS?
  28. Hide the status bar in ios 9
  29. “Cannot connect to iTunes Store” in-app purchases
  30. Unable to run app in Simulator: An error was encountered while running (Domain = LaunchServicesError, Code = 0)

Leave a Comment