The handleLogin() method

AuthenticatorActivity.kt

    /**
     * Handles the login event
     */
    private fun handleLogin() {
        val username = loginform_username.getContent()
        val password = loginform_password.getContent()

        Log.d(TAG, "handleLogin - username = $username, password = $password")

        /**
         * This is very "identityManager" specific code, so we check for the various
         * bits of support.  The "Mock" version will just
         */
        when (identityManager) {
            is MockIdentityManager -> {
                Log.i(TAG, "Invoking Mock User Authentication")
                val user = User()
                user.username = username
                userIsAuthenticated(user)
            }

            is AWSIdentityManager -> {
                Log.i(TAG, "Invoking Amazon Cognito User Authentication")
                thread(start = true) {
                    val cognitoUser = (identityManager as AWSIdentityManager).userPool.currentUser
                    cognitoUser.getSession(this)
                }
            }

            else -> {
                throw RuntimeException("Unknown IdentityManager implementation")
            }
        }
    }