Swift - AWS Cognito-Facebook Login
问题 I want to use Facebook for my login process with Cognito, and I've followed a lot of AWS documentation and look at tutorials and questions in Stackoverflow, but I've not found a solution for my problem. When the user opens the app, it will check if the user is logged in using IdentityManager. If not, it will open a new view where the user can sign in using Facebook using Facebook SDK. After that, I stored the token with a custom IdentityProvider as the documentation said (credentialsProvider