Swift 自定义后退按钮和目的地

自定义后退按钮和目的地是一项在使用 Swift 编程语言开发应用程序时非常常见的任务。通过自定义后退按钮，开发者可以为用户提供更好的导航体验，同时也能够根据自己的需求将用户导航到特定的目的地。本文将介绍如何使用 Swift 编写代码来实现自定义后退按钮和目的地，并通过一个简单的案例来演示。

let backButton = UIBarButtonItem(title: "返回", style: .plain, target: self, action: #selector(backButtonTapped))
navigationItem.leftBarButtonItem = backButton

let destinationVC = DestinationViewController()
navigationController?.pushViewController(destinationVC, animated: true)

class NewsViewController: UIViewController {
    override func viewDidLoad() {
        super.viewDidLoad()
        
        // 创建自定义后退按钮
        let backButton = UIBarButtonItem(title: "返回", style: .plain, target: self, action: #selector(backButtonTapped))
        navigationItem.leftBarButtonItem = backButton
        
        // 创建相关新闻按钮
        let relatedNewsButton = UIBarButtonItem(title: "相关新闻", style: .plain, target: self, action: #selector(relatedNewsButtonTapped))
        navigationItem.rightBarButtonItem = relatedNewsButton
    }
    
    @objc func backButtonTapped() {
        navigationController?.popViewController(animated: true)
    }
    
    @objc func relatedNewsButtonTapped() {
        let relatedNewsVC = RelatedNewsViewController()
        navigationController?.pushViewController(relatedNewsVC, animated: true)
    }
}
class RelatedNewsViewController: UIViewController {
    // 相关新闻列表界面的代码实现
}