如何在ImagePickerController()中识别覆盖视图上的TapGesture？

import UIKit
import AVFoundation

class ViewController: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate {

    var imagePickerController: UIImagePickerController!
    var overlayView: UIView!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        // 创建ImagePickerController
        imagePickerController = UIImagePickerController()
        imagePickerController.delegate = self
        
        // 创建覆盖视图
        overlayView = UIView(frame: view.bounds)
        overlayView.backgroundColor = UIColor.clear
        
        // 添加TapGestureRecognizer到覆盖视图
        let tapGesture = UITapGestureRecognizer(target: self, action: #selector(handleTap(_:)))
        overlayView.addGestureRecognizer(tapGesture)
        
        // 将覆盖视图添加到ImagePickerController的视图层级中
        imagePickerController.cameraOverlayView = overlayView
    }
    
    @objc func handleTap(_ gesture: UITapGestureRecognizer) {
        // 获取TapGestureRecognizer的坐标位置
        let tapPoint = gesture.location(in: overlayView)
        
        // 将坐标位置转换为ImagePickerController中的坐标系
        let convertedPoint = imagePickerController.view.convert(tapPoint, from: overlayView)
        
        // 判断坐标位置是否在ImagePickerController的可见区域内
        if imagePickerController.view.bounds.contains(convertedPoint) {
            // 获取对应的图像像素
            if let image = imagePickerController.view.snapshot {
                let pixel = image.pixel(at: convertedPoint)
                
                // 对图像像素进行处理
                // ...
            }
        }
    }
    
    // 其他相关方法...
}