CALayer 属性doubleSided

最新推荐文章于 2022-06-08 11:14:15 发布

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最新推荐文章于 2022-06-08 11:14:15 发布

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本文介绍UIView图层的doubleSided属性，该属性决定图层是否在面向观察者时可见，默认为YES，设置为NO时，图层背面将不可见。

UIView.layer.doubleSided = NO;

意思是图层有双面，是否都显示，设置NO意思背面看不到

@property(getter=isDoubleSided) BOOL doubleSided
Description	Determines whether the receiver is displayed when facing away from the viewer. Animatable.
	If `NO`, the layer is hidden when facing away from the viewer. Defaults to `YES`.
Availability	iOS (2.0 and later)
Declared	CALayer.h
Reference	CALayer Class Reference
Related	backgroundColor backgroundFilters borderColor borderWidth compositingFilter contentsGravity cornerRadius filters hidden magnificationFilter mask masksToBounds minificationFilter minificationFilterBias opacity shadowColor shadowOffset shadowOpacity shadowPath shadowRadius style
Guides	Core Animation Cookbook Core Animation Programming Guide