Get the current angle/rotation/radian for a UIView?

Question

How do you get the current angle/rotation/radian a UIView has?

Answer 1

A lot of the other answers reference atan2f, but given that we're operating on CGFloats, we can just use atan2 and skip the unnecessary intermediate cast:

Swift 4:

let radians = atan2(yourView.transform.b, yourView.transform.a)
let degrees = radians * 180 / .pi