Facebook integration iOS 6 Social/Accounts Frameworks - facebook

Question

I want to code a singleton for facebook integration with iOS 6.
I use Social and Accounts Frameworks.
This my FacebookData.h :
#class FacebookData;
#protocol FacebookDataDelegate <NSObject>
#optional
- (void)FacebookDataDidLoadRequest:(NSDictionary *)result;
- (void)FacebookDataDidFailToLoadRequest:(NSError *)error;
#end
#interface FacebookData : NSObject{
NSString *facebookAppID;
ACAccountStore *facebookAccountStore;
ACAccountType *facebookAccountType;
ACAccount *facebookAccount;
BOOL readPermissionsGranted;
BOOL RequestPermissionsGranted;
}
#property (nonatomic) id delegate;
+ (FacebookData*)sharedFacebookData;
- (void)setAppID:(NSString *)appID;
- (NSString *)currentAppID;
- (void)requestPermissions:(NSArray*)Permissions andLoadRequest:(NSString*)theRequest;
- (void)loadRequest:(NSString*)theRequest;
#end
The most important methods of my FacebookData.m :
- (void)requestPermissions:(NSArray*)Permissions andLoadRequest:(NSString*)theRequest{
if(!readPermissionsGranted){
__block NSArray *facebookPermissions = #[#"read_stream", #"email"];
__block NSDictionary *facebookOptions = #{ ACFacebookAppIdKey : facebookAppID,
ACFacebookAudienceKey : ACFacebookAudienceFriends,
ACFacebookPermissionsKey : facebookPermissions};
[facebookAccountStore requestAccessToAccountsWithType:facebookAccountType options:facebookOptions completion:^(BOOL granted, NSError *error)
{
if (granted) {
readPermissionsGranted = YES;
[self requestPermissions:Permissions andLoadRequest:theRequest];
}
// If permission are not granted to read.
if (!granted)
{
NSLog(#"Read permission error: %#", [error localizedDescription]);
[self.delegate FacebookDataDidFailToLoadRequest:error];
readPermissionsGranted = NO;
if ([[error localizedDescription] isEqualToString:#"The operation couldn’t be completed. (com.apple.accounts error 6.)"])
{
[self performSelectorOnMainThread:#selector(showError) withObject:error waitUntilDone:NO];
}
}
}];
}else{
__block NSArray *facebookPermissions = [NSArray arrayWithArray:Permissions];
__block NSDictionary *facebookOptions = #{ ACFacebookAppIdKey : facebookAppID,
ACFacebookAudienceKey : ACFacebookAudienceFriends,
ACFacebookPermissionsKey : facebookPermissions};
[facebookAccountStore requestAccessToAccountsWithType:facebookAccountType options:facebookOptions completion:^(BOOL granted2, NSError *error)
{
if (granted2)
{
RequestPermissionsGranted = YES;
// Create the facebook account
facebookAccount = [[ACAccount alloc] initWithAccountType:facebookAccountType];
NSArray *arrayOfAccounts = [facebookAccountStore accountsWithAccountType:facebookAccountType];
facebookAccount = [arrayOfAccounts lastObject];
[self loadRequest:theRequest];
NSLog(#"Permission granted");
}
if (!granted2)
{
NSLog(#"Request permission error: %#", [error localizedDescription]);
[self.delegate FacebookDataDidFailToLoadRequest:error];
RequestPermissionsGranted = NO;
}
}];
}
}
- (void)loadRequest:(NSString*)theRequest{
__block NSDictionary *result= [[NSDictionary alloc]init];
// Create the URL to the end point
NSURL *theURL = [NSURL URLWithString:theRequest];
// Create the SLReqeust
SLRequest *slRequest = [SLRequest requestForServiceType:SLServiceTypeFacebook requestMethod:SLRequestMethodGET URL:theURL parameters:nil];
// Set the account
[slRequest setAccount:facebookAccount];
// Perform the request
[slRequest performRequestWithHandler:^(NSData *responseData, NSHTTPURLResponse *urlResponse, NSError *error) {
if (error)
{
// If there is an error we populate the error string with error
__block NSString *errorString = [NSString stringWithFormat:#"%#", [error localizedDescription]];
NSLog(#"Error: %#", errorString);
[self.delegate FacebookDataDidFailToLoadRequest:error];
} else
{
NSLog(#"HTTP Response: %i", [urlResponse statusCode]);
NSDictionary *jsonResponse = [NSJSONSerialization JSONObjectWithData:responseData options:0 error:nil];
result = jsonResponse;
[self.delegate FacebookDataDidLoadRequest:jsonResponse];
}
}];
}
I use this singleton like this :
FacebookData *data = [FacebookData sharedFacebookData];
data.delegate = self;
[data setAppID:APPIDKEY];
[data requestPermissions:#[#"friends_location"] andLoadRequest:#"https://graph.facebook.com/me/friends?fields=id,name,location"];
This request with this permissions fails whereas the same method with permissions :#[#"email"] and request: https://graph.facebook.com/me/friends works perfectly.
This is the error that I can see in the console :
error = {
code = 2500;
message = "An active access token must be used to query information about the current user.";
type = OAuthException;
};
I can't find where the bug is, I don't know how to use tokens with these frameworks.
Thanks for your help !

Answer 1

IMO your LoadRequest URL is not correct
andLoadRequest:#"https://graph.facebook.com/me/friends?fields=id,name,location"];
SLRequest gives an oauth error even though its real problem with the URL. SLRequest doesn't support "?fields=id,name,location" directly in URL. You need to pass them as parameter in SLRequest
See the example below:
NSString* queryString = NULL;
queryString = [NSString stringWithFormat:#"https://graph.facebook.com/me/friends", nil];
NSURL *friendsRequestURL = [NSURL URLWithString:queryString];
SLRequest *friendsRequest = [SLRequest requestForServiceType:SLServiceTypeFacebook
requestMethod:SLRequestMethodGET URL:friendsRequestURL
parameters:#{#"fields":#"id,name,location"}];
PS: I was facing the similar problem last night and cursing the facebook for given wrong error statement. But finally able to solve it at the end. :)