Get Facebook access token from Social.framework(iOS6) - ios

Question

I need to retrieve Facebook access token of my system account, which I set in Settings application.
I know that Social.framework(iOS6) knows all my FB account information & I can perform API calls to Graph API using SLRequest class, like in this post http://blogs.captechconsulting.com/blog/eric-stroh/ios-6-tutorial-integrating-facebook-your-applications
But, my question is - how can I retrieve my Facebook system account's access token?
I found solution for Twitter https://dev.twitter.com/docs/ios/using-reverse-auth , but could you help me with Facebook

Answer 1

If you already know how to get the account store set up, here's code around it showing how to get the access token:
#property (strong, nonatomic) ACAccountStore *accountStore;
#property (strong, nonatomic) ACAccount *fbAccount;
...
#synthesize accountStore = _accountStore;
#synthesize fbAccount = _fbAccount;
...
// Initialize the account store
self.accountStore = [[ACAccountStore alloc] init];
// Get the Facebook account type for the access request
ACAccountType *fbAccountType = [self.accountStore
accountTypeWithAccountTypeIdentifier:ACAccountTypeIdentifierFacebook];
// Request access to the Facebook account with the access info
[self.accountStore requestAccessToAccountsWithType:fbAccountType
options:fbInfo
completion:^(BOOL granted, NSError *error) {
if (granted) {
// If access granted, then get the Facebook account info
NSArray *accounts = [self.accountStore
accountsWithAccountType:fbAccountType];
self.fbAccount = [accounts lastObject];
// Get the access token, could be used in other scenarios
ACAccountCredential *fbCredential = [self.fbAccount credential];
NSString *accessToken = [fbCredential oauthToken];
NSLog(#"Facebook Access Token: %#", accessToken);
// Add code here to make an API request using the SLRequest class
} else {
NSLog(#"Access not granted");
}
}];