将UIViewController中的UIView显示为上下文菜单预览

import UIKit

class ViewController: UIViewController, UIContextMenuInteractionDelegate {
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        // 创建一个UIView，并添加到视图层次结构中
        let myView = UIView(frame: CGRect(x: 100, y: 100, width: 100, height: 100))
        myView.backgroundColor = UIColor.red
        view.addSubview(myView)
        
        // 创建遵循UIContextMenuInteractionDelegate协议的对象
        let contextMenuDelegate = self
        
        // 创建UIContextMenuInteraction对象，并将其添加到UIView上
        let interaction = UIContextMenuInteraction(delegate: contextMenuDelegate)
        myView.addInteraction(interaction)
    }
    
    // 实现UIContextMenuInteractionDelegate协议的代理方法
    
    func contextMenuInteraction(_ interaction: UIContextMenuInteraction, configurationForMenuAtLocation location: CGPoint) -> UIContextMenuConfiguration? {
        // 返回一个UIContextMenuConfiguration对象，用于配置上下文菜单的内容和行为
        return UIContextMenuConfiguration(identifier: nil, previewProvider: nil) { _ in
            // 创建菜单项
            let action1 = UIAction(title: "Action 1", image: UIImage(systemName: "star")) { _ in
                // 执行菜单项的操作
                print("Action 1 selected")
            }
            
            let action2 = UIAction(title: "Action 2", image: UIImage(systemName: "heart")) { _ in
                // 执行菜单项的操作
                print("Action 2 selected")
            }
            
            // 返回菜单的内容
            return UIMenu(title: "Menu", children: [action1, action2])
        }
    }
    
    func contextMenuInteraction(_ interaction: UIContextMenuInteraction, previewForHighlightingMenuWithConfiguration configuration: UIContextMenuConfiguration) -> UITargetedPreview? {
        // 返回一个UIViewController对象，用于在用户高亮显示菜单项时显示预览
        return nil
    }
    
    func contextMenuInteraction(_ interaction: UIContextMenuInteraction, previewForDismissingMenuWithConfiguration configuration: UIContextMenuConfiguration) -> UITargetedPreview? {
        // 返回一个UIViewController对象，用于在用户取消菜单时显示预览
        return nil
    }
    
    func contextMenuInteraction(_ interaction: UIContextMenuInteraction, willDisplayMenuFor configuration: UIContextMenuConfiguration, animator: UIContextMenuInteractionAnimating?) {
        // 在菜单显示之前执行的操作
    }
    
    func contextMenuInteraction(_ interaction: UIContextMenuInteraction, willEndFor configuration: UIContextMenuConfiguration, animator: UIContextMenuInteractionAnimating?) {
        // 在菜单即将结束时执行的操作
    }
    
    func contextMenuInteraction(_ interaction: UIContextMenuInteraction, willPerformPreviewActionForMenuWith configuration: UIContextMenuConfiguration, animator: UIContextMenuInteractionCommitAnimating) {
        // 在用户选择菜单项时执行的操作
    }
}