ios - getting __ as Identifier in firebase ( login in using facebook) swift -
i put fbsdklogin
button , i'm integrating facebook
firebase
application.
func loginbutton(_ loginbutton: fbsdkloginbutton!, didcompletewith result: fbsdkloginmanagerloginresult!, error: error!) { let credential = firfacebookauthprovider.credential(withaccesstoken: fbsdkaccesstoken.current().tokenstring) print(credential) firauth.auth()?.signin(with: credential, completion: { (user, error) in if (error != nil) { print(error) return } print (user?.email) // it's nil } ) }
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