Facebook login for parse iOS app not working - ios

Question

I've added the facebook login button as described in the tutorial here. When I try testing this out however, the FB login button simply shows a loading indicator and the app freezes up. Is there any other integration I forgot to implement?
AppDelegate.m:
- (BOOL)application:(UIApplication *)application
openURL:(NSURL *)url
sourceApplication:(NSString *)sourceApplication
annotation:(id)annotation {
return [[FBSDKApplicationDelegate sharedInstance] application:application
openURL:url
sourceApplication:sourceApplication
annotation:annotation];
}
- (void)applicationDidBecomeActive:(UIApplication *)application {
[FBSDKAppEvents activateApp];
}
- (void)applicationDidBecomeActive:(UIApplication *)application {
// Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
// Start updating locations when the app returns to the foreground.
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:#"MainStoryboard" bundle:nil];
DefaultSettingsViewController *defaultSettingsViewController = [storyboard instantiateViewControllerWithIdentifier:#"DefaultSettingsViewController"];
//[defaultSettingsViewController.locationManager stopUpdatingLocation];
// Clear badge when app is opened
PFInstallation *currentInstallation = [PFInstallation currentInstallation];
if (currentInstallation.badge != 0) {
currentInstallation.badge = 0;
[currentInstallation saveEventually];
}
[FBSDKAppEvents activateApp];
[FBAppCall handleDidBecomeActiveWithSession:[PFFacebookUtils session]];
}
DefaultViewController.m:
- (void)_loginWithFacebook {
// Set permissions required from the facebook user account
NSArray *permissionsArray = #[ #"user_about_me", #"user_relationships", #"user_birthday", #"user_location"];
// Login PFUser using Facebook
[PFFacebookUtils logInInBackgroundWithReadPermissions:permissions block:^(PFUser *user, NSError *error) {
if (!user) {
NSLog(#"Uh oh. The user cancelled the Facebook login.");
} else if (user.isNew) {
NSLog(#"User signed up and logged in through Facebook!");
} else {
NSLog(#"User logged in through Facebook!");
}
}];
}
- (void)viewDidAppear:(BOOL)animated {
[super viewDidAppear:animated];
if (![PFUser currentUser]) { // No user logged in
// Create the log in view controller
PFLogInViewController *logInViewController = [[PFLogInViewController alloc] init];
[logInViewController setDelegate:self]; // Set ourselves as the delegate
[logInViewController setFacebookPermissions:[NSArray arrayWithObjects:#"friends_about_me", nil]];
[logInViewController setFields: PFLogInFieldsUsernameAndPassword | PFLogInFieldsLogInButton | PFLogInFieldsFacebook | PFLogInFieldsSignUpButton | PFLogInFieldsPasswordForgotten];
// Create the sign up view controller
PFSignUpViewController *signUpViewController = [[PFSignUpViewController alloc] init];
[signUpViewController setDelegate:self]; // Set ourselves as the delegate
// Assign our sign up controller to be displayed from the login controller
[logInViewController setSignUpController:signUpViewController];
// Present the log in view controller
[self presentViewController:logInViewController animated:YES completion:NULL];
} else {
[self performSegueWithIdentifier:#"login" sender:self];
}
}

Answer 1

Can you re-run your app with a breakpoint on the line of code in DefaultViewController.m
[logInViewController setDelegate:self]; // Set ourselves as the delegate
And in the identity inspector tell me what objects it contains?
I haven't had much experience with Parse, but it sounds like one of the frameworks may not be implemented properly. (if that's the case, it's a quick fix. you just re-download and put it back in your app)