我正在使用 collectionview 并且第一个数据加载工作正常。当标签重叠时第二次加载数据时会出现问题，因为旧标签似乎仍然存在。 下面是我的 collectionview 代码，在此先感谢。
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let customCell = collectionView.dequeueReusableCell(withReuseIdentifier: "customCellIdentifier", for: indexPath)
customCell.layer.borderColor = UIColor.black.cgColor
customCell.layer.borderWidth = 1
// changed these lines here
if cellsLabels[indexPath.row] != nil {
customCell.willRemoveSubview(cellsLabels[indexPath.row]!)
}
//to these lines here and the problem was solved
let maybe = customCell.subviews
for i in 0 ..< maybe.count {
maybe[i].removeFromSuperview()
}
let c
ommentLabel = UILabel()
commentLabel.text = commentsArray[indexPath.row]
commentLabel.frame = CGRect(x: 0, y: 50, width: 200, height: 30)
customCell.addSubview(commentLabel)
self.cellsLabels[indexPath.row] = commentLabel
if indexPath.row == commentLoadTracker*10 - 1 {
print("working doomfist")
}
return customCell
}
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return commentsArray.count
}
func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
var cellSize = CGSize()
cellSize.width = self.commentView.frame.width
cellSize.height = 100
return cellSize
}
最佳答案
customCell.willRemoveSubview
您正在调用 willRemoveSubiew 而不是 removeFromSuperview
if cellsLabels[indexPath.row] != nil {
cellsLabels[indexPath.row]!.removeFromSuperview()
}
不需要调用willRemoveSubview，UIKit会为你调用它，它的存在只是为了它可以是
Overridden by subclasses to perform additional actions before subviews are removed from the view.
关于ios - UICollectionView 重叠标签，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/45091389/