Facebook Connect triggers isCancelled event even when pressed OK - ios

Question

I am using React-native to build a small app (which I don't think is relevant).
The app finally goes to Facebook to request authorisation.
But when I click ok, I am sent to a isCancelled callback.
Here is the "FacebookLoginManager.m":
#import <Foundation/Foundation.h>
#import "FacebookLoginManager.h"
#import "FBSDKCoreKit/FBSDKCoreKit.h"
#import "FBSDKLoginKit/FBSDKLoginKit.h"
#implementation FacebookLoginManager
RCT_EXPORT_MODULE();
RCT_EXPORT_METHOD(newSession:(RCTResponseSenderBlock)callback) {
FBSDKLoginManager *login = [[FBSDKLoginManager alloc] init];
[login logInWithReadPermissions:#[#"public_profile"] handler:^(FBSDKLoginManagerLoginResult *result, NSError *error) {
if (error) {
callback(#[#"Error", [NSNull null]]);
} else if (result.isCancelled) {
callback(#[#"Canceled", [NSNull null]]); // I GET HERE AFTER CLICKING OK!
} else {
FBSDKAccessToken *token = result.token;
NSString *tokenString = token.tokenString;
NSString *userId = token.userID;
NSDictionary *credentials = #{ #"token" : tokenString, #"userId" : userId };
callback(#[[NSNull null], credentials]);
}
}];
};
#end

Answer 1

turns out my AppDelegate.m was misconfigured:
here it is after the fix,
#import "AppDelegate.h"
#import "FBSDKCoreKit/FBSDKCoreKit.h"
#import "RCTRootView.h"
#implementation AppDelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
NSURL *jsCodeLocation;
jsCodeLocation = [NSURL URLWithString:#"http://localhost:8081/index.ios.bundle"];
RCTRootView *rootView = [[RCTRootView alloc] initWithBundleURL:jsCodeLocation
moduleName:#"TourChampIOs"
launchOptions:launchOptions];
self.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];
UIViewController *rootViewController = [[UIViewController alloc] init];
rootViewController.view = rootView;
self.window.rootViewController = rootViewController;
[self.window makeKeyAndVisible];
return [[FBSDKApplicationDelegate sharedInstance] application:application
didFinishLaunchingWithOptions:launchOptions];
}
- (void)applicationDidBecomeActive:(UIApplication *)application {
[FBSDKAppEvents activateApp];
}
- (BOOL)application:(UIApplication *)application
openURL:(NSURL *)url
sourceApplication:(NSString *)sourceApplication
annotation:(id)annotation {
return [[FBSDKApplicationDelegate sharedInstance] application:application
openURL:url
sourceApplication:sourceApplication
annotation:annotation];
}
#end
hope this helps others.