如何在没有IB的情况下在右侧的UINavigationbar中添加2个按钮？

class YourViewController: UIViewController, UINavigationBarDelegate {
    // ...
}

override func viewDidLoad() {
    super.viewDidLoad()

    // 设置导航栏代理
    navigationController?.navigationBar.delegate = self

    // 创建第一个按钮
    let button1 = UIButton(type: .system)
    button1.setTitle("Button 1", for: .normal)
    button1.addTarget(self, action: #selector(button1Tapped), for: .touchUpInside)
    let barButton1 = UIBarButtonItem(customView: button1)

    // 创建第二个按钮
    let button2 = UIButton(type: .system)
    button2.setTitle("Button 2", for: .normal)
    button2.addTarget(self, action: #selector(button2Tapped), for: .touchUpInside)
    let barButton2 = UIBarButtonItem(customView: button2)

    // 将两个按钮添加到数组中
    navigationItem.rightBarButtonItems = [barButton1, barButton2]
}

@objc func button1Tapped() {
    print("Button 1 tapped")
}

@objc func button2Tapped() {
    print("Button 2 tapped")
}