title: ALAssetsLibraryChangedNotification not being triggered in ios5?
body: <p>I had implemented the <code>ALAssetsLibraryChangedNotification</code> in ios4 and it worked perfectly, however now in ios5 it seems it's getting ignored. I add:</p>
  
  <pre><code> [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(ALAssetsLibraryChangedNotification) name: ALAssetsLibraryChangedNotification object:self.library]; 
  </code></pre>
  
  <p>in my view controller initializer and in dealloc I put:</p>
  
  <pre><code>[[NSNotificationCenter defaultCenter] removeObserver:self name:ALAssetsLibraryChangedNotification object:nil];
  </code></pre>
  
  <p>Then the methdod implementation itself is:</p>
  
  <pre><code>- (void) ALAssetsLibraryChangedNotification
  {
  //doSomeStuff
  
  }
  </code></pre>
  
  <p>I need to add it in the initializer and remove it in dealloc so it updates if the user changes the library while out of the app. Anyone know a good solution to this?</p>