title: How to check if a user likes a page?
body: <p>I want to check if the user has liked my page or not. Here, I initialise the request for a list of likes the user has...</p>
  
  <pre><code>NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
  
  if ([defaults objectForKey:@"FBAccessTokenKey"] &amp;&amp; [defaults objectForKey:@"FBExpirationDateKey"])
  {
      [self.facebook setAccessToken:[defaults objectForKey:@"FBAccessTokenKey"]];
      [self.facebook setExpirationDate:[defaults objectForKey:@"FBExpirationDateKey"]];
  }
  
  if (![self.facebook isSessionValid])
  {
      [self.facebook authorize:[[NSArray alloc] initWithObjects:@"publish_stream, user_likes", nil]];
  }
  else
  {
  [self.facebook requestWithGraphPath:@"me/likes" andParams:nil andHttpMethod:@"POST" andDelegate:self];    
  }
  </code></pre>
  
  <p>The code executes to requestWithGraphPath. However it never works, I get "The operation couldn’t be completed. (facebookErrDomain error 10000.)".</p>