Redirect to settings page after activating your plugin

register_activation_hook(__FILE__, 'my_plugin_activate');
add_action('admin_init', 'my_plugin_redirect');

function my_plugin_activate() {
    add_option('my_plugin_do_activation_redirect', true);
}

function my_plugin_redirect() {
    if (get_option('my_plugin_do_activation_redirect', false)) {
        delete_option('my_plugin_do_activation_redirect');
        if(!isset($_GET['activate-multi']))
        {
            wp_redirect("options-general.php?page=wcf-settings");
        }
    }
}