Can I login with user pool and cognito identity without setting authentication delegate?

I want to offer login with federated identity, using facebook, google, and user pool (email). I have a problem getting identityId after cognito user pool sign up succeeds. The error is "Authentication delegate not set". I don't want to set the delegate to user pool. I managed to signup without needing it, and I just want to get the identityId.

Can this be done with setting the delegate? Am I doing something wrong?

func setupAWS(){
    loginProvider = LoginProvider()
    userPoolConfig()
    credentialsProvider = AWSCognitoCredentialsProvider(regionType: .USEast1, identityPoolId: "identityPoolId", identityProviderManager: userPool)
    let configuration = AWSServiceConfiguration(region: .USEast1, credentialsProvider: credentialsProvider)
    AWSServiceManager.default().defaultServiceConfiguration = configuration

}

func userPoolConfig(){
    let configuration = AWSServiceConfiguration(region: .USEast1, credentialsProvider: credentialsProvider)
    let userPoolConfiguration = AWSCognitoIdentityUserPoolConfiguration(clientId: "clientid", clientSecret: "clientsecret", poolId: "poolid")
    AWSCognitoIdentityUserPool.register(with: configuration, userPoolConfiguration: userPoolConfiguration, forKey: "UserPool")
    userPool = AWSCognitoIdentityUserPool(forKey: "UserPool")
}

//logins from LoginProvider
func logins() -> AWSTask<NSDictionary> {
    switch type {
    case .facebook:
        if let token = AccessToken.current?.authenticationToken {
            return AWSTask(result: [AWSIdentityProviderFacebook:token])
        }
        return AWSTask(error:NSError(domain: "Facebook Login", code: -1 , userInfo: ["Facebook" : "No current Facebook access token"]))
    default:
        return userService.userPool!.logins()
    }
}

//After signup
func verificationCodeProvided(code: String){
    presenter!.user!.confirmSignUp(code).continueWith(block: { (response) -> Any? in
        if response.error != nil {
            //fail
        } else {
            print("Signup succeeded")
            print("Id: \(self.presenter?.userService.credentialsProvider?.identityId)") //returns nil

            self.presenter!.setUser()
        }
        return nil
    })
}

//trying to get identity id
func setUser(){        
    self.userService.credentialsProvider!.getIdentityId().continueWith(block: { (task) -> Any? in
        if (task.error != nil) {
            print("Error: " + task.error!.localizedDescription) // prints "Authentication delegate not set" for user pool login
        }
        else {
            let cognitoId = task.result!
            print("Cognito id: \(cognitoId)") //Works for Facebook
        }
        return nil
    })
}

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