无法禁用CALayer>>> removeFromSuperlayer的动画 [英] Unable to disable animation of CALayer>>removeFromSuperlayer

问题描述

我希望在不设置动画的情况下从其上层删除CALayer。这里发生的是将图层动画化到一个位置，并且效果很好，但是当动画停止时，将执行此代码，该代码将图层返回到其起始位置，然后淡出。大概然后将其从上层移除。如何停止对-removeFromSuperlayer设置动画？此处列出的代码对于未注释且未注释的所有变体，包括事务或没有事务，具有相同的行为。我想念什么？

I wish to remove a CALayer from its superlayer without animating. What happens here is the layer animates to a position, works great, when however the animation stopped, this code is executed, which returns the layer to its start position, and fades out; presumably then gets removed from the superlayer. How may it be stopped from animating -removeFromSuperlayer ? The code listed here has the same behavior for all variations of the included comments being uncommented and not uncommented, Transaction or no transaction. What am I missing?

- (void)animationDidStop:(CAAnimation *)anim finished:(BOOL)flag
{
    //[self setHidden: YES];

    //[CATransaction flush];
    [CATransaction begin];
    [CATransaction setValue:(id)kCFBooleanTrue
                     forKey:kCATransactionDisableActions];
    //[CATransaction setDisableActions: YES];
    //[CATransaction setAnimationDuration: 0];
    [self removeFromSuperlayer];
    [CATransaction commit];
}

我一直在搜索，此代码与我的代码没有什么不同已找到。

I have been searching around, and this code is not any different from what I have found.

推荐答案

您可以通过在超级图层上设置操作字典为涉及子图层的动画返回null来禁用隐式动画（类似于我的回答在这里）：

You can disable the implicit animation by setting the actions dictionary on the superlayer to return null for animations involving sublayers (similar to my answer here):

NSMutableDictionary *newActions = [[NSMutableDictionary alloc] initWithObjectsAndKeys:[NSNull null], @"sublayers", nil];
superlayer.actions = newActions;
[newActions release];

您可能还需要覆盖图层（而非超级图层）的onOrderOut操作，以防止出现这种情况。我会在链接的答案中说明如何做到这一点。

You may also need to override the layer's (not the superlayer's) onOrderOut action to prevent this. I show how to do that in the linked answer.

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