使用计时器重新加载数据后，UICollectionView在错误的indexPath中显示UIMenuController

Question

我正在使用UICollectionView开发一个倒计时场景。我做了一个计时器，以1秒的间隔更新collectionView。单元格正确更改其内容。但是当我长按单元格时，菜单控制器经常显示在错误的位置。如何解决？

谢谢。

这是简单的测试代码。

import UIKit

class ViewController: UIViewController {

@IBOutlet weak var collectionView: UICollectionView!

var time = 100

override func viewDidLoad() {
    super.viewDidLoad()

    collectionView.register(UINib(nibName: "TestCollectionViewCell", bundle: nil), forCellWithReuseIdentifier: "cell")

    let timer = Timer(timeInterval: 1.0, target: self, selector: #selector(ViewController.timerFire(timer:)), userInfo: nil, repeats: true)
    RunLoop.main.add(timer, forMode: .common)
}

@objc func timerFire(timer: Timer) {
    if time == 0 {
        timer.invalidate()
    } else {
        time -= 1
        collectionView.reloadData()
    }
}
}

extension ViewController: UICollectionViewDataSource {

func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
    return 20
}

func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
    let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "cell", for: indexPath) as! TestCollectionViewCell
    cell.label.text = "\(time)"
    return cell
}

func collectionView(_ collectionView: UICollectionView, performAction action: Selector, forItemAt indexPath: IndexPath, withSender sender: Any?) {
    print("perform")
}

extension ViewController: UICollectionViewDelegate {

func collectionView(_ collectionView: UICollectionView, canPerformAction action: Selector, forItemAt indexPath: IndexPath, withSender sender: Any?) -> Bool {
    return true
}

func collectionView(_ collectionView: UICollectionView, shouldShowMenuForItemAt indexPath: IndexPath) -> Bool {
    return true
}
}