Ios 在MacCatalyst中使用AppKit和PDFKit 目标

动态加载macOS捆绑包以将PDFKit/AppKit使用到MacCatalyst应用程序中。然后，通过方法

PDFDocument（）.printOperation（）

在不显示对话框的情况下打印PDF

问题 我的函数

printPDF（data:data）

在MacOS应用程序中正常工作，但在MacCatalyst中崩溃。通过将“plugin”包加载到MacCatalyst应用程序，我可以很好地使用AppKit中的方法（通过以下步骤），但尝试从PDFKit打印PDF会引发异常

PDFDocument printOperationForPrintInfo:scalingMode:autoRotate::::::：发送到实例0x600000092C0的无法识别的选择器。我的生成设置中是否需要包含一些内容来解决此问题

最小可重复示例
创建MacCatalyst应用程序
创建MacOS捆绑包，并将其嵌入应用程序目标的“框架、库”部分
创建一个插件文件
plugin.swift
，其目标成员身份是捆绑包和应用程序目标
创建一个文件
MacOSPlugin.swift
，其目标成员资格仅为MacCatalyst应用程序
在AppDelegate中加载插件并调用
printPDF（）
//Plugin.swift

@objc (Plugin)
protocol Plugin:NSObjectProtocol {
    
    init()
    
    func sendEmail(recipients: [String], subject: String?, body: String)
    
    func printPDF(data: Data)
    
}

//MacOSPlugin.swift

import Cocoa
import PDFKit

class MacOSPlugin:NSObject, Plugin {
    
    required override init() { }   
    
    /// Open the device's default email browser and populate the to, subject, and body fields.
    /// - Parameters:
    ///   - recipients: Email Recipients
    ///   - subject: Email Subject
    ///   - body: Email Text
    func sendEmail(recipients: [String], subject: String?, body: String) {
        let emailService = NSSharingService.init(named: NSSharingService.Name.composeEmail)!
        emailService.recipients = recipients
        emailService.subject = subject
        emailService.perform(withItems: [body])
    }
    
    
    /// Opens the default printer and immediately starts a print job.
    /// - Parameter data: PDF Data
    func printPDF(data: Data) {
        let info = NSPrintInfo.shared
        //Magic numbers that put the pdf in the top right corner of the page for shipping.
        info.rightMargin = 390
        info.topMargin = 443
        
        let document = PDFDocument(data: data)
        let operation = document?.printOperation(
            for: info,
            scalingMode: .pageScaleNone,
            autoRotate: false
        )
        operation?.showsPrintPanel = false
        operation?.run()
    }

}

   func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
        testPlugin()
        return true
    }
    
    func testPlugin() {
        let plugin = loadPlugin(module: "MacOSPlugin", bundleName: "MacOSPlugin")
        plugin?.printPDF(data: Data(base64Encoded: "JVBERi0xLjIgCjkgMCBvYmoKPDwKPj4Kc3RyZWFtCkJULyA5IFRmKFRlc3QpJyBFVAplbmRzdHJlYW0KZW5kb2JqCjQgMCBvYmoKPDwKL1R5cGUgL1BhZ2UKL1BhcmVudCA1IDAgUgovQ29udGVudHMgOSAwIFIKPj4KZW5kb2JqCjUgMCBvYmoKPDwKL0tpZHMgWzQgMCBSIF0KL0NvdW50IDEKL1R5cGUgL1BhZ2VzCi9NZWRpYUJveCBbIDAgMCA5OSA5IF0KPj4KZW5kb2JqCjMgMCBvYmoKPDwKL1BhZ2VzIDUgMCBSCi9UeXBlIC9DYXRhbG9nCj4+CmVuZG9iagp0cmFpbGVyCjw8Ci9Sb290IDMgMCBSCj4+CiUlRU9G")!)
    }
    
    func loadPlugin(module:String, bundleName:String) -> Plugin? {
        let bundleFilename = "\(bundleName).bundle"
        guard let bundleURL = Bundle.main.builtInPlugInsURL?
                .appendingPathComponent(bundleFilename) else { return nil }
        guard let bundle = Bundle(url: bundleURL) else { return nil }
        guard let pluginClass = bundle.classNamed("\(module).\(bundleName)") as? Plugin.Type else { return nil }
        return pluginClass.init()
    }