剪辑到另一个UIImageView的边界

Question

I have two UIImageView s, imageView1 and imageView2 . I've set

self.imageView1.clipsToBounds = YES;

but I was wondering if it is possible to set imageView1 to clipToBounds of imageView2 ?

Answer 1

Not easily. The "right" way to do this would be to use a clipping path on the imageView1 's layer. However, you can get the same effect much more easily as follows.

Put imageView1 centered inside a container UIView , and turn that view's clipsToBounds on. Then:

• If you're using Auto Layout, constrain the container view's size to be equal to the size of imageView2 .

• If you're not using Auto Layout, set the bounds of the container view to the size of imageView2 whenever you calculate layout.