uts插件开发,ios端,华为扫码遇到了代理不被调用的问题

我正在开发华为统一扫码的uts插件,iOS端.用的是swift混编方式,现在遇到了问题:

import Foundation
import UIKit
import AVFoundation
import ScanKitFrameWork
import DCloudUTSFoundation

public class NativeCode: UIViewController, DefaultScanDelegate {
// 定义一个闭包属性，用于回调结果
public var scanResultCallback: ((String) -> Void)?

@objc func scan() {  
    // 使用 DCloudUTSFoundation 中的 console.log  
    console.log("Scan method called")  

    let options = HmsScanOptions.init(scanFormatType:  
                                      UInt32(HMSScanFormatTypeCode.QR_CODE.rawValue |            
                                             HMSScanFormatTypeCode.DATA_MATRIX.rawValue),   
                                      photo: false)  
    if let scanVc = HmsDefaultScanViewController(defaultScanWithFormatType: options) {  
        console.log("Scan view controller initialized")  
        scanVc.defaultScanDelegate = self  
        DispatchQueue.main.async {  
            if let currentVC = self.getTopViewController() {  
                console.log("Presenting scan view controller")  
                currentVC.present(scanVc, animated: true, completion: {  
                    console.log("Scan view controller presented")  
                })  
                currentVC.navigationController?.isNavigationBarHidden = true  
            } else {  
                console.log("Failed to get top view controller")  
            }  
        }  
    } else {  
        console.log("Failed to initialize scan view controller")  
    }  
}  

private func getTopViewController() -> UIViewController? {  
    var topVC = UIApplication.shared.keyWindow?.rootViewController  
    while let presentedVC = topVC?.presentedViewController {  
        topVC = presentedVC  
    }  
    return topVC  
}  

public func defaultScanImagePickerDelegate(for image: UIImage!) {  
    DispatchQueue.main.async {  
        console.log("defaultScanImagePickerDelegate called")  
        //在主线程内处理数据  
    }  
}  

public func defaultScanDelegate(forDicResult resultDic: [AnyHashable: Any]!) {  
    DispatchQueue.main.async {  
        let formatValue: String = String(describing: resultDic!["formatValue"]!)  
        console.log("formatValue: \(resultDic?["formatValue"] ?? "")")  
        console.log("formatValue: \(formatValue)")  
        console.log("formatValue: \(self.getScanType(formatValue: formatValue))")  
        console.log("text: \(String(describing: resultDic["text"]))")  
        let parserDic: [String: String]? = resultDic["parserDic"] as? [String: String]  
        console.log("sceneType: \(parserDic?["sceneType"] ?? "")")  
        console.log("sceneType: \(self.getScanTypeFormat(formatValue: parserDic?["sceneType"]! ?? ""))")  
        let bytes: [String]? = resultDic["rawBytes"] as? [String]  
        console.log("rawBytes: \(bytes ?? [String]())")  

        // self.result?([  
        //  "scanTypeForm": self.getScanType(formatValue: formatValue),  
        //  "value": resultDic!["text"],  
        //  "scanType": self.getScanTypeFormat(formatValue: parserDic?["sceneType"] ?? ""),  
        // ])  
    }  
}  

//获取扫码类型编码  
func getScanType(formatValue: String?) -> Int {  
    switch formatValue {  
    case "QR_CODE":  
        return 1  
    case "AZTEC":  
        return 2  
    case "DATA_MATRIX":  
        return 4  
    case "PDF_417":  
        return 8  
    case "CODE_39":  
        return 16  
    case "CODE_93":  
        return 32  
    case "CODE_128":  
        return 64  
    case "EAN_13":  
        return 128  
    case "EAN_8":  
        return 256  
    case "ITF":  
        return 512  
    case "UPC_A":  
        return 1024  
    case "UPC_E":  
        return 2048  
    case "CODABAR":  
        return 4096  
    default:  
        return 0  
    }  
}  

//获取扫码类型编码  
func getScanTypeFormat(formatValue: String) -> Int {  
    switch formatValue.uppercased() {  
    case "NUMBER":  
        return 1001  
    case "EMAIL":  
        return 1002  
    case "TEL":  
        return 1003  
    case "TEXT":  
        return 1004  
    case "SMS":  
        return 1005  
    case "WEBSITE"://url  
        return 1006  
    case "WI-FI":  
        return 1007  
    case "EVENT":  
        return 1008  
    case "CONTACT":  
        return 1009  
    case "DRIVER":  
        return 10010  
    case "LOCATION":  
        return 10011  
    case "BOOK":  
        return 10012  
    case "VEHICLE":  
        return 10013  
    case "PURE_TEXT":  
        return 10014  
    default:  
        return 0  
    }  
}  

}

扫码完成之后,defaultScanDelegate代理没有被触发,无法获取到扫码结果

想问一下这可能是什么原因