I get the Malformed access token for Facebook in ios 6 - iphone

Question

I want to fetch the facebook friends profile picture.I also give the access_token for it.
I search a lot on net but didn't got any good solution.
my code is as follow:
- (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&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:&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
}
}];
}
But i always got the error like this:
error = {
code = 190;
message = "Malformed access token BAAFcRQZCZAUeUBAICacM2q1V5UzRHee6xHGnbEdu19v6CZBIEDJmTwHBKtMZBwtVuFiEeuXqt4yKeSkeI17QZBGaZCeszBfOKdbZAfR4E9RN2nFqHalKPXZBga96WQCU8CSNG4ZCJCK1V7JIbqZAPRgNl6mjjO4Ns1CEaLpbXUYtum1CXbNqTtT82YpVVKoZCmMEBpqHfwYMx1OKu9RZBsjPZA6DlhKA1uGyU32EGJ8QOQZASJVQZDZD?access_token=BAAFcRQZCZAUeUBAHBZBSdTL9wWFDOVthxj78bBJlrNEkPiKHdxZA1HaRmO9dtBTJdsZCtZCu2vaE5ByZAdK7Ox30BpIR0KTg0ZC6pi1IOE0KnZCZBSxqbycG0C6Ws5Ct4ferL3G0VU1wIfDypKekFM3zB4r5gAiUREQ66Yuz2Fu2mp5NGqZCBE1p357H41P2lKOAQN9EZAmu4q3SRtjMuVIw4dtdC00l4RhMuDWTOIUQlO54bgZDZD";
type = OAuthException;
};
}
I can't able to solve this. Help me!

Answer 1

If you're using an SLRequest, it will auto append the access token for you, and you also should not have any request params in the URL itself. Instead, you should do something like:
NSURL *requestURL = [NSURL URLWithString:#"https://graph.facebook.com/me/friends"];
SLRequest *request = [SLRequest requestForServiceType:SLServiceTypeFacebook
requestMethod:SLRequestMethodGET
URL:requestURL
parameters:#{#"fields":#"id,name,picture,first_name,last_name,gender"}];

Answer 2

You can also use this instead of using SLRequest.It is also
NSURL *meurl = [NSURL URLWithString:[NSString stringWithFormat:#"https://graph.facebook.com/me?access_token=%#",fbAccessToken]];
NSURLRequest *req = [[NSURLRequest alloc]initWithURL:meurl];
[NSURLConnection sendAsynchronousRequest:req queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) {
NSString *userDataString = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
}];