在 reloadItemsAtIndexPaths 后避免 UICollectionView 的动画 [英] Avoid animation of UICollectionView after reloadItemsAtIndexPaths

问题描述

UICollectionView 在 reloadItemsAtIndexPaths 被调用后动画项目(淡入淡出动画).

UICollectionView animate items after reloadItemsAtIndexPaths is called (fade animation).

有没有办法避免这个动画?

Is there a way to avoid this animation?

iOS 6

推荐答案

值得注意的是，如果您面向 iOS 7 及更高版本，则可以使用新的 UIView 方法 performWithoutAnimation:.我怀疑在幕后，这与此处的其他答案大致相同(暂时禁用 UIView 动画/核心动画操作)，但语法很好且干净.

It's worth noting that if you're targeting iOS 7 and above, you can use the new UIView method performWithoutAnimation:. I suspect that under the hood this is doing much the same as the other answers here (temporarily disabling UIView animations / Core Animation actions), but the syntax is nice and clean.

所以对于这个问题，特别...

So for this question in particular...

目标 C:

[UIView performWithoutAnimation:^{
    [self.collectionView reloadItemsAtIndexPaths:indexPaths];
}];

斯威夫特:

UIView.performWithoutAnimation {
    self.collectionView.reloadItemsAtIndexPaths(indexPaths)
}

当然，此原则适用于您希望确保更改 动画化的任何情况.

Of course this principle can be applied for any situation that you want to ensure a change is not animated.

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