title: Possible to save an integer array using NSUserDefaults on iPhone?
body: <p>Is it possible to save an integer array using NSUserDefaults on the iPhone?  I have an array declared in my .h file as: <code>int playfield[9][11]</code> that gets filled with integers from a file and determines the layout of a game playfield.  I want to be able to have several save slots where users can save their games.  If I do:</p>
  
  <pre><code>NSUserDefaults *prefs = [NSUserDefaults standardUserDefaults];
  [prefs setObject: playfield forKey: @"slot1Save"];
  </code></pre>
  
  <p>I get a pointer error.  If it's possible to save an integer array, what's the best way to do so and then retrieve it later?</p>
  
  <p>Thanks in advance!</p>