Question

I am looking for a way to save the access token to allow the user to post on facebook without having to log in for each call to the graph API :

I require an offline_access token, i store it in the NSUserDefaults, but when i try to use it again i get a FacebookErrDomain error 10000

Here is what i do :

In the fbDidLogin i get the access_token and save it in the user defaults

- (void)fbDidLogin {
    NSString *token = self.facebook.accessToken;
    [[NSUserDefaults standardUserDefaults] setObject:token forKey:@"facebookToken"];

}

After that when i run the app again i just get the token from the user defaults, and assign them to the facebook object :

NSString *token = [[NSUserDefaults standardUserDefaults] objectForKey:@"facebookToken"];
[_facebook setAccessToken:token];

But it doesn’t work..

Has anybody any idea what i could be doing wrong ?

Thanks,
Vincent.

EDIT :
If i do a NSlog after [[NSUserDefaults standardUserDefaults] objectForKey:@"facebookToken"]; i can see that the token was saved.

Answer 1

I was having the same problem and I found out that the issue is you are not storing expiration date.

If you do that, it will allow you to relogin in fine.

Sample code:

 [[NSUserDefaults standardUserDefaults] setObject:_facebook.accessToken forKey:@"fb_access_token"];
 [[NSUserDefaults standardUserDefaults] setObject:_facebook.expirationDate forKey:@"fb_exp_date"];

Retrieving is the same, just set the _facebook.expirationDate.