本文介绍了UICollectionViewCell在出列时不会自动调用updateConstraints?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我有一个UICollectionViewCell子类。我写了一个 updateConstraints
方法,因为我之前做了一百次。由于某些原因,当细胞出列时从未调用过。我必须在将其取消后添加对 [cell setNeedsUpdateConstraints]
的手动调用。
I have a UICollectionViewCell subclass. I wrote an updateConstraints
method as I've done a hundred times before. For some reason that is never called when the cell is dequeued. I had to add a manual call to [cell setNeedsUpdateConstraints]
after dequeueing it.
任何想法可能会发生什么在这里?
Any idea what could be going on here?
推荐答案
实现此方法并返回YES。这可能会有所帮助。
Implement this method and return YES. This could probably help.
+ (BOOL)requiresConstraintBasedLayout
详情:
这篇关于UICollectionViewCell在出列时不会自动调用updateConstraints?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!