我正在使用collectionview，第一个数据加载工作正常 . 当标签重叠第二次加载数据时会出现问题，因为旧标签似乎仍然存在 . 以下是我的collectionview代码，提前感谢 .
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
}
1 回答
您正在拨打
willRemoveSubiew而不是removeFromSuperview没有必要调用
willRemoveSubview，UIKit为你调用它，它只存在以便它可以