The simplest way to resize an UIImage?

Question

In my iPhone app, I take a picture with the camera, then I want to resize it to 290*390 pixels. I was using this method to resize the image :

UIImage *newI         


        

Answer 1

Use this extension, in case you need to resize width/height only with aspect ratio.

extension UIImage {
    func resize(to size: CGSize) -> UIImage {
        return UIGraphicsImageRenderer(size: size).image { _ in
            draw(in: CGRect(origin: .zero, size: size))
        }
    }
    func resize(width: CGFloat) -> UIImage {
        return resize(to: CGSize(width: width, height: width / (size.width / size.height)))
    }
    func resize(height: CGFloat) -> UIImage {
        return resize(to: CGSize(width: height * (size.width / size.height), height: height))
    }
}