我的页面控件 UI 没有更新？

Question

我的页面控件 UI 没有更新。页面控制号每次都在更新，但在页面控制 UI 中没有更新。我想也许使用 updateCurrentPageDisplay 会起作用，或者这就是我所缺少的，但我刚刚收到一个错误。这是我的代码。我是否遗漏了需要更新 UI 的内容？

@IBOutlet weak var pageControl: UIPageControl!


  override func viewDidLoad() {
    super.viewDidLoad()

collection.delegate = self
collection.dataSource = self

    thisWidth = CGFloat(collection.frame.width)
    pageControl.hidesForSinglePage = true

    pageControl = UIPageControl.appearance()
    pageControl.pageIndicatorTintColor = UIColor.lightGray
    pageControl.currentPageIndicatorTintColor = UIColor.red
    pageControl.numberOfPages = 10
    pageControl.currentPage = 0

  }
    func numberOfSections(in collectionView: UICollectionView) -> Int {
    return 10
}
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
    return 1
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
  let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "cell", for: indexPath) as! CalanderCollectionViewCell

    let imagePath = array[indexPath.section]


    cell.configureCell(properties: imagePath)

    return cell
}

func collectionView(_ collectionView: UICollectionView, willDisplay cell: UICollectionViewCell, forItemAt indexPath: IndexPath) {
    self.pageControl.currentPage = indexPath.section
    print("current page\(pageControl.currentPage)")
    pageControl.updateCurrentPageDisplay()
    print(indexPath.section)
}

func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
    thisWidth = CGFloat(collection.frame.width)
    return CGSize(width: thisWidth, height: collection.frame.height)
}

Answer 1

删除这一行：

pageControl = UIPageControl.appearance()

我的页面控件 UI 没有更新？

My Page Control UI is not getting updated?

uipagecontrol

ios

swift