O'Reilly logo

Cocoa Programming for Mac OS X, Third Edition by Aaron Hillegass

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Chapter 13. User Defaults

Many applications have Preferences panels that allow the user to choose a preferred appearance or behavior. The user’s choices go into the user defaults database in the user’s home directory. Note that only the choices that vary from the factory defaults are saved in the user defaults database. If you go to ~/Library/Preferences, you can see your user defaults database. The files are in property list format; you can browse through them with Property List Editor.

The NSUserDefaults class allows your application to register the factory defaults, save the user’s preferences, and read previously saved user preferences.

The color well that you dropped into the Preferences window in Chapter 12 will determine the background color ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required