swift 导航栏item

    /// 配置导航 客服
    private func setNavRightBar() {
        let rightBarItem = UIBarButtonItem(image: UIImage(named: "customerService")?.withRenderingMode(UIImage.RenderingMode.alwaysOriginal), style: .plain, target: self, action: #selector(clickCustomerServiceItem))
        self.navigationItem.rightBarButtonItem = rightBarItem
    }