UIImagePNGRepresentation issues? / Images rotated by 90 degrees

Question

I want to load images from UIImagePickerController, then save the selected photo to my app\'s document directory.

UIImage *image = [info objectForKey:UIImage         


        

Answer 1

The following swift function resolves the problem.

func rotateImage(image: UIImage) -> UIImage? {
        if (image.imageOrientation == UIImage.Orientation.up ) {
            return image
        }
        UIGraphicsBeginImageContext(image.size)
        image.draw(in: CGRect(origin: CGPoint.zero, size: image.size))
        let copy = UIGraphicsGetImageFromCurrentImageContext()
        UIGraphicsEndImageContext()
        return copy
    }

Yup it is that simple, just because the drawInRect function will take image orientation in consideration.