Draw another image on a UIImage

Question

Is it possible to add another, smaller, image to a UIImage/UIImageView? If so, how? If not, then how can I draw a small filled triangle?

Thanks

Answer 1

You can try this, works perfect for me, it's UIImage category:

- (UIImage *)drawImage:(UIImage *)inputImage inRect:(CGRect)frame {
    UIGraphicsBeginImageContextWithOptions(self.size, NO, 0.0);
    [self drawInRect:CGRectMake(0.0, 0.0, self.size.width, self.size.height)];
    [inputImage drawInRect:frame];
    UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    return newImage;
}

or Swift:

extension UIImage {
    func image(byDrawingImage image: UIImage, inRect rect: CGRect) -> UIImage! {
        UIGraphicsBeginImageContext(size)
        draw(in: CGRect(x: 0, y: 0, width: size.width, height: size.height))
        image.draw(in: rect)
        let result = UIGraphicsGetImageFromCurrentImageContext()
        UIGraphicsEndImageContext()
        return result
    }
}