Not getting call to loginViewShowingLoggedInUser from FBLoginView - ios

Question

I am using the Facebook SDK for the first time. I am working with Xcode 5.1 and iOS 7.
I programmatically display FBLoginView:
- (void)viewDidLoad
{
[super viewDidLoad];
NSLog(#"viewDidLoad");
// Do any additional setup after loading the view.
if ( !loginView ) {
// loginView =[[FBLoginView alloc] initWithReadPermissions:#[#"basic_info"]];
loginView =[[FBLoginView alloc] initWithReadPermissions:[NSArray arrayWithObjects:#"basic_info", #"user_location", nil]];
}
loginView.delegate = self;
loginView.frame = CGRectOffset(loginView.frame,
(self.view.center.x -(loginView.frame.size.width /2)), 5);
CGPoint vCenter = CGPointMake( CGRectGetMidX(self.view.frame),
CGRectGetMidY(self.view.frame) );
CGPoint lvCenter = CGPointMake( vCenter.x, vCenter.y+100.0 );
loginView.center = lvCenter;
[self.view addSubview:loginView];
[self updateView];
}
I have implemented the required override functions:
#pragma mark - FBLoginViewDelegate
- (void) loginViewFetchedUserInfo:(FBLoginView *)loginView user:(id<FBGraphUser>)user {
NSLog(#"loginViewFetchedUserInfo");
[self updateView];
}
- (void) loginViewShowingLoggedInUser:(FBLoginView *)loginView {
NSLog(#"loginViewShowingLoggedInUser");
[self updateView];
}
- (void) loginViewShowingLoggedOutUser:(FBLoginView *)loginView {
NSLog(#"loginViewShowingLoggedOutUser");
[self updateView];
}
- (void)updateView {
NSLog(#"FB updateView");
[[FBRequest requestForMe] startWithCompletionHandler:
^(FBRequestConnection *connection, NSDictionary<FBGraphUser>*FBUser, NSError *error) {
if (error) {
NSLog(#"updateView - error");
} else {
NSLog(#"updateView - good");
NSNumber *owner_id = [NSNumber numberWithLong:[[FBUser id] longLongValue]];
if ( FB_user_id == nil ) {
FB_user_id = owner_id;
NSLog(#"FBUser ID = %#", FB_user_id);
loggedInSession = [FBSession activeSession];
[[NSUserDefaults standardUserDefaults] setObject:[FBUser id] forKey:#"eventOwnerID"];
[self performSegueWithIdentifier:#"continue_to_app" sender:self];
}
}
}];
if ([self checkFacebookSession]) {
}
dispatch_async(dispatch_get_main_queue(), ^{
[self.view setNeedsDisplay];
});
}
The FBLoginView button appears with "Log in with Facebook". I can log in and accept permissions, but the loginViewShowingLoggedInUser override function never gets called.
Someone suggested adding the following:
- (BOOL) application:(UIApplication *) application
openURL:(NSURL *)url
sourceApplication:(NSString *)sourceApplication
annotation:(id)annotation
{
NSLog ( #"application openURL");
NSLog ( #"URL = %#", url);
NSLog ( #"Application = %#", sourceApplication);
// Call FBAppCall's ha
BOOL wasHandled = [FBAppCall handleOpenURL:url sourceApplication:sourceApplication];
//[LoginUIViewController updateView];
return wasHandled;
}
This code had no effect and was never executed.
What am I doing wrong?

Answer 1

You are using #"basic_info", for this Facebook shows following error when I tried testing your code!
Invalid Scope: basic_info. Use public_profile, user_friends instead
I was interested in knowing where did you add the method:
- (BOOL) application:(UIApplication *) application
openURL:(NSURL *)url
sourceApplication:(NSString *)sourceApplication
annotation:(id)annotation
{
NSLog ( #"application openURL");
NSLog ( #"URL = %#", url);
NSLog ( #"Application = %#", sourceApplication);
// Call FBAppCall's ha
BOOL wasHandled = [FBAppCall handleOpenURL:url sourceApplication:sourceApplication];
//[LoginUIViewController updateView];
return wasHandled;
}
It should be in your AppDelegate, which works for me.

Answer 2

The read permissions have changed.
Refer this :
[https://developers.facebook.com/docs/apps/changelog#v2_0_permissions
][1]
The Error "invalide scope : basic info use public_profile, user friends instead" clearly states that "basic_info" is invalid and it suggests to make use of "public_profile" or "user_friends" as the new scope.
Change it in the following code:
self.loginView.readPermissions = #[#"basic_info"];
TO
self.loginView.readPermissions = #[#"public_profile"];