UIImageView按键缩放并快速拖动

import UIKit

class ViewController: UIViewController {
    
    var imageView: UIImageView!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        // 初始化 UIImageView
        imageView = UIImageView(image: UIImage(named: "exampleImage"))
        imageView.frame = CGRect(x: 50, y: 50, width: 200, height: 200)
        imageView.isUserInteractionEnabled = true
        view.addSubview(imageView)
        
        // 添加捏合手势识别器
        let pinchGesture = UIPinchGestureRecognizer(target: self, action: #selector(handlePinch(_:)))
        imageView.addGestureRecognizer(pinchGesture)
        
        // 添加平移手势识别器
        let panGesture = UIPanGestureRecognizer(target: self, action: #selector(handlePan(_:)))
        imageView.addGestureRecognizer(panGesture)
        
        // 允许多个手势同时识别
        pinchGesture.delegate = self
        panGesture.delegate = self
    }
    
    @objc func handlePinch(_ gestureRecognizer: UIPinchGestureRecognizer) {
        if gestureRecognizer.state == .began || gestureRecognizer.state == .changed {
            imageView.transform = CGAffineTransform(scaleX: gestureRecognizer.scale, y: gestureRecognizer.scale)
            gestureRecognizer.scale = 1.0 // 重置 scale，以便下次缩放时基于当前大小
        }
    }
    
    @objc func handlePan(_ gestureRecognizer: UIPanGestureRecognizer) {
        let translation = gestureRecognizer.translation(in: imageView)
        imageView.center = CGPoint(x: imageView.center.x + translation.x, y: imageView.center.y + translation.y)
        gestureRecognizer.setTranslation(CGPoint.zero, in: imageView) // 重置 translation
    }
}

extension ViewController: UIGestureRecognizerDelegate {
    func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldRecognizeSimultaneouslyWith otherGestureRecognizer: UIGestureRecognizer) -> Bool {
        return true
    }
}