How to programmatically rotate the view by 180 degrees on iOS?

Question

How to programmatically rotate the view by 180 degrees in my iPhone App?

Answer 1

In Swift 3 :

let rotationDegrees =  180.0
let rotationAngle = CGFloat(rotationDegrees * M_PI / 180.0)
view.transform = CGAffineTransform(rotationAngle: rotationAngle)