Rotate a UIImage by 90 degree angles

Rotate a UIImage by 90 degree angles

I was looking for an easy way to rotate an image by 90 degrees and all the methods I used lots of code & required redrawing the image, normally with a transform, then getting the image from that. All I wanted was to quickly and easily rotate a UIImage by 90
degree angles so didn’t care about being able to precisely rotate by any angle.

    UIImage *image = //... create an image
    image = [UIImage imageWithCGImage:image.CGImage scale:image.scale orientation:UIImageOrientationRight];

UIImageOrientationUp : 0°/360°
UIImageOrientationRight : 90°
UIImageOrientationLeft : 270°
UIImageOrientationDown : 190°

UIImageOrientation
Reference

A note though if you then rotate that image it’ll rotate relative to it’s current rotation. “image.imageOrientation”