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问题描述
我在文档中找不到任何指示单个CALayer(或子类)是否可以用作其他多个层的mask
属性的内容.是否有可能?还是未定义?
I can't find anything in the docs that indicates whether a single CALayer (or subclass) can be used as the mask
property for multiple other layers. Is it possible? Or undefined?
推荐答案
我的实验表明不能.最终将作为附加到其上的最后一层的遮罩,并且之前被指定为遮罩的所有先前层将还原为默认的遮罩值.
My experimentation says that it cannot. It will end up as the mask for the last layer it is attached to, and any previous layers it was assigned as a mask to, will revert to the default value of mask.
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