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

Question

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

Answer 1

In swift 2 and Xcode 7 :

let RdnVal = CGFloat(atan2f(Float(NamVyu.transform.b), Float(NamVyu.transform.a)))
let DgrVal = RdnVal * CGFloat(180 / M_PI)