在调整父nsview大小时，如何将Calayer保持在相同的位置？
想象一个小红色框（CALayer 实例）绘制在其父层（托管 NSView 的层的根层）的左下角。
当父视图的框架发生变化时，红色框应保持在屏幕上的相同位置。我通过调整它相对于父视图左下角的位置来做到这一点。
问题是，在某些情况下会出现闪烁，我可以看到在扩展帧的左下角绘制了红色框图层，然后才将其显示在正确的位置。
我假设将帧和位置更改包装到一个 CATransaction 中将使这两项更改一起进行，但这并不总是有效（文档说通过使用事务，动画将同时开始，但有时似乎仍然存在竞争条件）。
如何调整父 NSView 的框架，同时将子图层保持在其感知位置？
示例和代码：
我自己的想法：
隐藏红框图层，更新位置，再次显示
使用约束将其绑定到右角。问题是这个偏移量也可能会改变，我必须更新约束，这可能会导致相同的闪烁问题。
Imagine a small red box (CALayer instance) drawn in the lower left corner of its parent layer (which is the root layer of a layer hosting NSView).
When the frame of the parent view changes, the red box should remain at the same position on the screen. I do this by adjusting it's position relative to the lower left corner of the parent view .
The problem is that in some cases there is flickering and I can see the red box layer being drawn in the lower left corner of the extended frame before it is shown at the correct position.
I assumed that wrapping the frame and position change into one CATransaction would make both changes together, but that doesn't always work (the docs say that by using a transaction the animations will start at the same time, but there still seems to be a race condition at times).
How can I adjust the frame of the parent NSView while keeping the child layer at its perceived position?
Example and code:
My own ideas:
Hide red box layer, update the position, show it again
Use constraints to bind it to the right corner. Problem is that this offset could also change and I would have to update the constraint which could lead to the same flickering issue.
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尝试删除您已经编写的使图层随视图移动的代码，并将其放在您要创建图层的位置。
Try deleting the code you have already made to have the layer move with the view and put this where you are creating the layer.