How do you rotate a UIView in an animation?

Question

我可以为UIView设置大小和位置等的动画。但是如何旋转它呢？

Answer 1

Change its transform matrix...here is a link to the transform property of views transforms

You can use CGAFfineTransforms to set this property, you can either make a new one, or use CGAffineTransformMakeRotation that takes a degree as input, here is a reference to that CGAffineTransforms

hope that helps