title: I get the Malformed access token for Facebook in ios 6
body: <p>I want to fetch the facebook friends profile picture.I also give the access_token for it.</p>
  
  <p>I search a lot on net but didn't got any good solution.</p>
  
  <p>my code is as follow:</p>
  
  <pre><code>- (IBAction)advancedButtonPressed:(id)sender {
  
      self.accountStore = [[ACAccountStore alloc]init];
      ACAccountType *FBaccountType= [self.accountStore accountTypeWithAccountTypeIdentifier:ACAccountTypeIdentifierFacebook];
  
      //NSString *key = @"xxxxxx";
  
      NSString *key = @"xxxxxx";
      NSDictionary *dictFB = [NSDictionary dictionaryWithObjectsAndKeys:key,ACFacebookAppIdKey,@[@"email"],ACFacebookPermissionsKey, nil];
  
  
          [self.accountStore requestAccessToAccountsWithType:FBaccountType options:dictFB completion:
           ^(BOOL granted, NSError *e) {
               if (granted) {
                   NSArray *accounts = [self.accountStore accountsWithAccountType:FBaccountType];
                   //it will always be the last object with single sign on
                   self.facebookAccount = [accounts lastObject];
                      NSLog(@"facebook account =%@",self.facebookAccount);
  
                   ACAccountCredential *fbCredential = [self.facebookAccount credential];
                  accessToken = [fbCredential oauthToken];
                   NSLog(@"Facebook Access Token: %@", accessToken);
  
                   [self get];
               } else {
                   //Fail gracefully...
                NSLog(@"error getting permission %@",e);
  
               }
           }];
  
  }
  
  
  -(void)fr
  {
  NSURL *requestURL = [NSURL URLWithString:@"https://graph.facebook.com/me/friends?fields=id,name,picture,first_name,last_name,gender&amp;access_token=BAAFcRQZCZAUeUBAICacM2q1V5UzRHee6xHGnbEdu19v6CZBIEDJmTwHBKtMZBwtVuFiEeuXqt4yKeSkeI17QZBGaZCeszBfOKdbZAfR4E9RN2nFqHalKPXZBga96WQCU8CSNG4ZCJCK1V7JIbqZAPRgNl6mjjO4Ns1CEaLpbXUYtum1CXbNqTtT82YpVVKoZCmMEBpqHfwYMx1OKu9RZBsjPZA6DlhKA1uGyU32EGJ8QOQZASJVQZDZD"];
  
      SLRequest *request = [SLRequest requestForServiceType:SLServiceTypeFacebook
                                              requestMethod:SLRequestMethodGET
                                                        URL:requestURL
                                                 parameters:nil];
      request.account = self.facebookAccount;
  
  
  
      [request performRequestWithHandler:^(NSData *data,
                                           NSHTTPURLResponse *response,
                                           NSError *error) {
  
          if(!error)
          {
              list =[NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:&amp;error];
  
              NSLog(@"Dictionary contains data: %@", list );
              if([list objectForKey:@"error"]!=nil)
              {
                  [self attemptRenewCredentials];
              }
              dispatch_async(dispatch_get_main_queue(),^{
                  nameLabel.text = [list objectForKey:@"username"];
              });
          }
          else{
              //handle error gracefully
              NSLog(@"error from get%@",error);
              //attempt to revalidate credentials
          }
  
      }];
  }
  </code></pre>
  
  <p><strong>But i always got the error like this:</strong></p>
  
  <pre><code>error =     {
          code = 190;
          message = "Malformed access token BAAFcRQZCZAUeUBAICacM2q1V5UzRHee6xHGnbEdu19v6CZBIEDJmTwHBKtMZBwtVuFiEeuXqt4yKeSkeI17QZBGaZCeszBfOKdbZAfR4E9RN2nFqHalKPXZBga96WQCU8CSNG4ZCJCK1V7JIbqZAPRgNl6mjjO4Ns1CEaLpbXUYtum1CXbNqTtT82YpVVKoZCmMEBpqHfwYMx1OKu9RZBsjPZA6DlhKA1uGyU32EGJ8QOQZASJVQZDZD?access_token=BAAFcRQZCZAUeUBAHBZBSdTL9wWFDOVthxj78bBJlrNEkPiKHdxZA1HaRmO9dtBTJdsZCtZCu2vaE5ByZAdK7Ox30BpIR0KTg0ZC6pi1IOE0KnZCZBSxqbycG0C6Ws5Ct4ferL3G0VU1wIfDypKekFM3zB4r5gAiUREQ66Yuz2Fu2mp5NGqZCBE1p357H41P2lKOAQN9EZAmu4q3SRtjMuVIw4dtdC00l4RhMuDWTOIUQlO54bgZDZD";
          type = OAuthException;
      };
  }
  </code></pre>
  
  <p><strong>I can't able to solve this. Help me!</strong></p>