长话短说，我的用例是在Mac催化剂应用程序中包含状态栏菜单，为此我需要访问Appkit库。多亏了共享协议的方法，我可以在catalyst应用程序中同时包含Appkit和UIkit，只要它加载默认的NSMenuItem，我就可以加载NSStatubar，但是当我将Custom SwiftUI视图分配给NSMenuItem时，状态栏根本不显示。
下面是我如何在Appdelegate中加载插件的代码

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {
    let macPlugin = AppKitContainer.loadPlugin()
    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
        if let macPlugin = macPlugin {
            DispatchQueue.main.asyncAfter(deadline: .now() + 0.5) {
                macPlugin.loadStatusMenu()
            }
        }
        return true
    }
}

下面是我如何用默认nsmenuitem加载状态栏

class MacPlugin: NSObject, Plugin {
        
    var statusBarItem = NSStatusBar.system.statusItem(withLength: NSStatusItem.variableLength)
    var menu = NSMenu()
        
    var contentMenuItemView = NSMenuItem.init()

    //load default nsmenuitem which works
    func loadStatusMenu() {
        statusBarItem.button?.title = "search"

        menu.addItem(NSMenuItem(title: "Quit Silicon Info", action: #selector(NSApplication.terminate(_:)), keyEquivalent: "q"))

        statusBarItem.menu = menu
    }
}

输出https://i.stack.imgur.com/v4pYO.png
下面是我如何在状态栏中加载SwiftUI视图（基本上用Swiftui视图替换了默认菜单项）

import AppKit

class MacPlugin: NSObject, Plugin {
        
    var statusBarItem = NSStatusBar.system.statusItem(withLength: NSStatusItem.variableLength)
    var menu = NSMenu()
        
    var contentMenuItemView = NSMenuItem.init()
    
    //load swiftui in nsmenuitem doesn't work
    func loadStatusMenuWithSwiftUIView() {
        statusBarItem.button?.title = "search"

        let view = NSHostingView.init(rootView: Text.init("Hello world")) //SwiftUI view
        view.frame = NSRect(x: 0, y: 0, width: 292, height: 633)
        contentMenuItemView.view = view

        menu.addItem(contentMenuItemView)

        statusBarItem.menu = menu
        
    }
}

输出：未显示状态栏
根据调试，方法不会被调用，它与NSHostingView有关。控制台中没有错误。
任何帮助都很感激。