login with twitter callback url error

Question

I want to login to app with twitter, i follow this documentation but i got this error

[TwitterKit] did encounter error with message "Error obtaining user auth token.": Error Domain=TWTRLogInErrorDomain Code=-1 "Callback URL not approved for this client application. Approved callback URLs can be adjusted in your application settings" UserInfo={NSLocalizedDescription=Callback URL not approved for this client application. Approved callback URLs can be adjusted in your application settings} error: Optional("Request failed: forbidden (403)")

i found this answer in twitter developer documentation

If you do receive this error message, please check the URL that you are using with the callback_url parameter in your oauth/request_token call and make sure that this URL has been whitelisted in your app settings on apps.twitter.com.

and this is the link

but i don't understand that, i don't know what to do any help please ?

Answer 1

I solved it, I set Callback URL in that format twitterkit-{api key}:// suppose api key is 1234 then the Callback URL should be twitterkit-1234://

Answer 2

twitterkit-{ConsumerKey}:// or twittersdk://

https://github.com/twitter/twitter-kit-ios/blob/b6eb49d149b056d826cbc4b53eaeb39a3ebd591e/TwitterKit/TwitterKit/Social/Identity/TWTRLoginURLParser.h

Answer 3

I have used the following call back URL.

twittersdk://

This work for me.

Answer 4

You have to add this callback URL under your twitter app settings