IOS: rotate an uiimageview

Question

in my app I have an imageview, its name is arrow and I rotate it of 180 degrees in this way:

arrow.transform = CGAffineTransformMakeRotation(M_PI);
         


        

Answer 1

Swift3:

arrow.transform = CGAffineTransform(rotationAngle: rotation);

where rotation is the angle to rotate in radians.