Building the UIImageEffects class

Our final part to the image tinting on iOS is implementing the class that will return a tinted image from a template image and color. Create a new folder in the iOS project called Helpers, add a new file called UIImageEffects.cs, and implement the following:

public static class UIImageEffects 
    { 
        public static UIImage GetColoredImage(UIImage image, UIColor color) 
        { 
            UIImage coloredImage = null; 
 
            UIGraphics.BeginImageContext(image.Size); 
 
            using (CGContext context = UIGraphics.GetCurrentContext()) 
            { 
                context.TranslateCTM(0, image.Size.Height); 
                context.ScaleCTM(1.0f, -1.0f); 
 
                var rect = new CGRect(0, 0, image.Size.Width, image.Size.Height); 
 
                // draw image, (to get transparancy mask) 
                context.SetBlendMode(CGBlendMode.Normal); 
                context.DrawImage(rect, image.CGImage); 
 
                ...