Unable to implement a custom Facebook login button for IOS - facebook

Question

I am trying to create a custom login button for IOS 9,i have been following the Facebook's tutorial for doing so but when i button is clicked,i end up getting this error
libc++abi.dylib: terminate_handler unexpectedly threw an exception
I have been following this Facebook tutorial,only difference is i am using dispatch_async due to some reasons.
https://developers.facebook.com/docs/facebook-login/ios#loginkit
dispatch_async(dispatch_get_main_queue(), ^{
NSMutableArray* Permissions = [[NSMutableArray alloc] init];
[Permissions addObject:#"email"];
[Permissions addObject:#"public_profile"];
FBSDKLoginManager *loginManager = [[FBSDKLoginManager alloc] init];
[loginManager logInWithReadPermissions:Permissions
handler:^(FBSDKLoginManagerLoginResult *result, NSError *error)
{
if (error)
{
NSLog(#"Process error");
}
else if (result.isCancelled)
{
NSLog(#"Cancelled");
}
else
{
NSLog(#"Logged in");
}
];
});
I have tried using Parse SDK's code too like so...
NSArray *permissionsArray = #[ #"user_about_me", #"user_relationships", #"user_birthday", #"user_location"];
[PFFacebookUtils logInInBackgroundWithReadPermissions:permissionsArray 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!");
}
}];
But both the time,i end up getting the same error like as shown in the image below..
Error message image
Am i doing something wrong in app validation process?
Please help!
Thank you!

Answer 1

This is weird,after playing around in Xcode,i found that it is not able to get my appID and other settings from my plist even though it's there.After i programmatically set my app id using
[FBSDKSettings setAppID:#"appid"];
[FBSDKSettings setDisplayName:#"displayname"];
I was to able get rid of that error,but i am stuck at URLSchemes...i will recreate the project and try again!
Thank you!
It's working now and,i am able to get a login page,but after i get past the app login screen,i am getting a blank white screen with only a done button at th top right corner,when i click it,i get the log message that the user cancelled login.