iPhone旋转时CALayer的自动旋转 [英] Autorotation of CALayer on iPhone rotation

问题描述

我有一个UIViewController，我在其中向视图层添加了CALayer子类：

I have a UIViewController where I am adding a CALayer subclass to the view's layer:

[self.view.layer addSublayer:myObject.backgroundLayer];

当我旋转设备时，视图会旋转，但是CALayer不会。它有点被分离到左侧，仍然处于纵向视图。

When I rotate the device, the view rotates, but the CALayer doesn't. It sort of gets shunted off to the left, still in portrait view.

是否有一种方法可以使子图层自动旋转，还是需要应用变换？

Is there a way to make sublayers rotate automatically or do I need to apply a transform?

推荐答案

您需要自己管理CALayer的轮换。我相信0,0会保留在同一位置，并且大小会更改为与新方向匹配，因此，如果您要自己做某事，则需要自己管理旋转变换的添加。

You need to manage the rotation of the CALayer yourself. I believe that 0,0 stays at the same place and that the size is changed to match the new orientation, so if you wanted to do something yourself, you'd need to manage the addition of the rotation transformation yourself.

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