How can I make an UIImage programmatically?

Question

This isn\'t what you probably thought it was to begin with. I know how to use UIImage\'s, but I now need to know how to create a \"blank\" UIImage using:

CGRect sc

Answer 1

Using the latest UIGraphics classes, and in swift, this looks like this (note the CGContextDrawPath that is missing in the answer from user1834305, this is the reason that is produces an transparant image) :

static func imageWithSize(size : CGSize, color : UIColor) -> UIImage {
    UIGraphicsBeginImageContext(size)
    let context = UIGraphicsGetCurrentContext()
    CGContextSetFillColorWithColor(context, color.CGColor)
    CGContextAddRect(context, CGRect(x: 0, y: 0, width: size.width, height: size.height));
    CGContextDrawPath(context, .Fill)
    let image = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    return image
}