用于打开新viewController的自定义导航栏按钮和操作

// 在你的ViewController中
override func viewDidLoad() {
    super.viewDidLoad()
    
    // 创建一个自定义按钮
    let customButton = UIButton(type: .custom)
    customButton.setImage(UIImage(named: "your_image"), for: .normal)
    customButton.addTarget(self, action: #selector(customButtonTapped), for: .touchUpInside)
    
    // 设置按钮的大小
    customButton.frame = CGRect(x: 0, y: 0, width: 30, height: 30)
    
    // 创建一个UIBarButtonItem并设置自定义按钮
    let customBarButtonItem = UIBarButtonItem(customView: customButton)
    
    // 将自定义按钮添加到导航栏
    navigationItem.rightBarButtonItem = customBarButtonItem
}

@objc func customButtonTapped() {
    // 创建新的ViewController
    let newViewController = NewViewController()
    
    // 设置过渡动画
    newViewController.modalPresentationStyle = .fullScreen
    
    // 导航到新的ViewController
    self.navigationController?.pushViewController(newViewController, animated: true)
}

class NewViewController: UIViewController {
    override func viewDidLoad() {
        super.viewDidLoad()
        
        // 设置背景颜色或其他UI元素
        view.backgroundColor = .white
        
        // 添加一个简单的标签
        let label = UILabel(frame: CGRect(x: 0, y: 0, width: 200, height: 50))
        label.center = view.center
        label.textAlignment = .center
        label.text = "New ViewController"
        view.addSubview(label)
    }
}

import UIKit

class ViewController: UIViewController {
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        // 创建一个自定义按钮
        let customButton = UIButton(type: .custom)
        customButton.setImage(UIImage(named: "your_image"), for: .normal)
        customButton.addTarget(self, action: #selector(customButtonTapped), for: .touchUpInside)
        
        // 设置按钮的大小
        customButton.frame = CGRect(x: 0, y: 0, width: 30, height: 30)
        
        // 创建一个UIBarButtonItem并设置自定义按钮
        let customBarButtonItem = UIBarButtonItem(customView: customButton)
        
        // 将自定义按钮添加到导航栏
        navigationItem.rightBarButtonItem = customBarButtonItem
    }
    
    @objc func customButtonTapped() {
        // 创建新的ViewController
        let newViewController = NewViewController()
        
        // 设置过渡动画
        newViewController.modalPresentationStyle = .fullScreen
        
        // 导航到新的ViewController
        self.navigationController?.pushViewController(newViewController, animated: true)
    }
}

class NewViewController: UIViewController {
    override func viewDidLoad() {
        super.viewDidLoad()
        
        // 设置背景颜色或其他UI元素
        view.backgroundColor = .white
        
        // 添加一个简单的标签
        let label = UILabel(frame: CGRect(x: 0, y: 0, width: 200, height: 50))
        label.center = view.center
        label.textAlignment = .center
        label.text = "New ViewController"
        view.addSubview(label)
    }
}