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

Swift 4 answer:

func scaleDown(image: UIImage, withSize: CGSize) -> UIImage {
    let scale = UIScreen.main.scale
    UIGraphicsBeginImageContextWithOptions(withSize, false, scale)
    image.draw(in: CGRect(x: 0, y: 0, width: withSize.width, height: withSize.height))
    let newImage = UIGraphicsGetImageFromCurrentImageContext()
    UIGraphicsEndImageContext()
    return newImage!
}