Facebook sdk fetch friend error - iphone

Question

I am new to iOS development. I got an error when fetching the friend from facebook by using the Facebook SDK.Here are my code.
FacebookClass
- (void)fetchFacebookFriend{
AppDelegate *appDelegate = [[UIApplication sharedApplication] delegate];
NSArray *permissions = [[NSArray alloc] initWithObjects:
#"user_birthday",#"friends_hometown",
#"friends_birthday",#"friends_location",#"friends_work_history",
nil];
if (!FBSession.activeSession.isOpen) {
// if the session is closed, then we open it here, and establish a handler for state changes
[FBSession openActiveSessionWithReadPermissions:permissions
allowLoginUI:YES
completionHandler:^(FBSession *session,
FBSessionState state,
NSError *error) {
if (error != nil) {
NSLog(#"Failed to retrive facebook friend.");
return;
}
else{
self.myArray = [[NSMutableArray alloc] init];
NSLog(#"permissions::%#",FBSession.activeSession.permissions);
FBRequest *friendRequest = [FBRequest requestForGraphPath:#"me/friends?fields=name,picture,birthday,hometown,location,work"];
[friendRequest startWithCompletionHandler:^(FBRequestConnection *connection, id result, NSError *error) {
appDelegate.myFacebookArray = [[NSMutableArray alloc] init];
for (NSDictionary *fbData in [result objectForKey:#"data"]) {
NSLog(#"%#",fbData);
[self.myArray addObject:fbData];
}
}];
}
}];
return;
}
}
ViewController
- (IBAction)pickFriendPressed:(id)sender {
NSLog(#"##Begin");
[[FacebookClass sharedInstance] fetchFacebookFriend];
NSLog(#"##End");
}
Output
##Begin
##End
Json data
Please help I get the Json data after display the ##End.Thanks

Answer 1

Here you have a code sample that fetches the friends info:
[facebook requestWithGraphPath:#"me/friends"
andParams:[ NSDictionary dictionaryWithObjectsAndKeys:#"picture,id,name,link,gender,last_name,first_name",#"fields",nil]
andDelegate:self];
Remember to:
implement the proper delegate methods
You must call authorize before fetching the friends information. This way the user will be able to login first.
I hope this helps, cheers

Answer 2

Try this:
get friend list using
[FBRequest requestForMyFriends];
FBRequest* friendsRequest = [FBRequest requestForMyFriends];
[friendsRequest startWithCompletionHandler: ^(FBRequestConnection connection,NSDictionary result,NSError error) { NSArray friends = [result objectForKey:#"data"]; ......
the coding is as follow but main line is [FBRequest requestForMyFriends];
-(void)sessionStateChanged:(FBSession *)session state:(FBSessionState)state error:(NSError *)error {
switch (state) {
case FBSessionStateOpen: {
if (self != nil) {
[[FBRequest requestForMe] startWithCompletionHandler: ^(FBRequestConnection *connection, NSDictionary<FBGraphUser> *user, NSError *error) {
if (error) {
//error
}else{
FBRequest* friendsRequest = [FBRequest requestForMyFriends];
[friendsRequest startWithCompletionHandler: ^(FBRequestConnection *connection,NSDictionary* result,NSError *error) {
NSArray* friends = [result objectForKey:#"data"];
for (int i = 0; i < [arrFacebookFriends count]; i++) {
UserShare *shareObj = [arrFacebookFriends objectAtIndex:i];
[shareObj release];
shareObj = nil;
}
[arrFacebookFriends removeAllObjects];
for (NSDictionary<FBGraphUser>* friend in friends) {
UserShare *shareObj = [[UserShare alloc] init];
shareObj.userName = friend.name;
shareObj.userFullName = friend.username;
shareObj.userId = [friend.id intValue];
NSLog(#"%#",friend.id);
shareObj.userPhotoUrl = [NSString stringWithFormat:#"https://graph.facebook.com/%#/picture?", friend.id];
[arrFacebookFriends addObject:shareObj];
[shareObj release];
}
[self StopSpinner];
[tblFacebookFriends reloadData];
}];
}
}];
}
FBCacheDescriptor *cacheDescriptor = [FBFriendPickerViewController cacheDescriptor];
[cacheDescriptor prefetchAndCacheForSession:session];
}
break;
case FBSessionStateClosed: {
[self StopSpinner];
UIViewController *topViewController = [self.navigationController topViewController];
UIViewController *modalViewController = [topViewController modalViewController];
if (modalViewController != nil) {
[topViewController dismissViewControllerAnimated:YES completion:nil];
}
//[self.navigationController popToRootViewControllerAnimated:NO];
[FBSession.activeSession closeAndClearTokenInformation];
[self performSelector:#selector(showLoginView) withObject:nil afterDelay:0.5f];
}
break;
case FBSessionStateClosedLoginFailed: {
[self StopSpinner];
[self performSelector:#selector(showLoginView) withObject:nil afterDelay:0.5f];
}
break;
default:
break;
}
[[NSNotificationCenter defaultCenter] postNotificationName:SCSessionStateChangedNotificationFL object:session];
if (error) {
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:[NSString stringWithFormat:#"Error: %#", [FacebookFriendsListViewController FBErrorCodeDescription:error.code]] message:error.localizedDescription delegate:nil cancelButtonTitle:#"OK" otherButtonTitles:nil];
[alertView show];
[alertView release];
}
}
see my accepted this answer on How to get the list of friend without opening FBFriendPickerViewController iOS