触摸 CollectionView 时禁用动画？

Posted 2023-03-14

【中文标题】触摸 CollectionView 时禁用动画？

【英文标题】：Disable animation when CollectionView is touched?

【发布时间】：2016-12-28 01:03:45

【问题描述】：

我有一个在滚动时执行动画的 collectionview。但是，在播放此动画时，我无法触摸屏幕来停止滚动。我必须等待滚动完全停止。

func collectionView(_ collectionView: UICollectionView, willDisplay cell: UICollectionViewCell, forItemAt indexPath: IndexPath) 

    let cellsAcross: CGFloat = 1
    let spaceBetweenCells: CGFloat = 1
    let dim = (collectionView.bounds.width - (cellsAcross - 1) * spaceBetweenCells) / cellsAcross
    let finalCellFrame = cell.frame
    //check the scrolling direction to verify from which side of the screen the cell should come.
    let translation = collectionView.panGestureRecognizer.translation(in: collectionView.superview!)
    if translation.x > 0 
        cell.frame = CGRect(x: CGFloat(4), y: CGFloat(finalCellFrame.origin.y), width: CGFloat(dim), height: CGFloat(44))
     else 
        cell.frame = CGRect(x: CGFloat(4), y: CGFloat(finalCellFrame.origin.y), width: CGFloat(dim), height: CGFloat(44))
    
    UIView.animate(withDuration: 0.25, delay: 0.4, animations: (_: Void) -> Void in
        cell.frame = finalCellFrame
    )

当我删除动画时，只要我的手指触摸屏幕，我就可以随意中断滚动。如何在保持动画的同时中断滚动？

【参考方案1】：

尝试从

更改您的动画块

UIView.animate(withDuration: 0.25, delay: 0.4, animations: (_: Void) -> Void in
        cell.frame = finalCellFrame
)

到

  UIView.animate(withDuration: 0.25, delay: 0.4, options: .allowUserInteraction, animations:  

        cell.frame = finalCellFrame

        , completion: nil)
  )

添加.allowUserInteraction 作为选项应该可以解决问题。

【讨论】：

哇哦！这么简单的解决方案！成功了，谢谢！