什么是选择的CALayer在查看效果督察界面生成器里面吗？(What does selecting

里面IB，在查看效果检查，有设置核心动画层的选项。 如果我将它设置它有什么作用？

它是相当于setWantsLayer:YES ？

如果是这样那么按照苹果文档 setWantsLayer之前或之后调用setLayer:

The order that setWantsLayer: and setLayer: are called is important, it makes the distinction between a layer-backed view and a layer-hosting view.

如果我从IB设置的CALayer，那将是哪些订单？

Answer 1:

该复选框，使您的视图层支持的 （比如调用setWantsLayer:无setLayer:

文章来源: What does selecting CALayer in View Effects Inspector inside Interface Builder do?