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    <p>I don't know a core graphics solution for the gradient but if you can make an image in photoshop which starts white on the right and fades to alpha on the left you could overlay that on top of the content image</p> <p>to overlay the image you would do something like </p> <pre><code>+ (UIImage*) addFadeOutToImage:(UIImage*)sourceImage { UIGraphicsBeginImageContext(sourceImage.size); [sourceImage drawAtPoint:CGPointZero]; UIImage* fadeAlphaImage = [UIImage imageNamed:@"fadedAlphaImage.png"]; CGPoint fadeOutStartPoint = CGPointMake(sourceImage.size.width - fadeAlphaImage.size.width, 0); //assumes the fade image is the same height as the source [fadeAlphaImage drawAtPoint:fadeOutStartPoint]; UIImage* fadeOutImage = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); return fadeOutImage; } </code></pre> <p>this code adapted from <a href="https://stackoverflow.com/questions/679245/create-a-uiimage-from-two-other-uiimages-on-the-iphone">this question</a></p> <p>Or Swift version as requested by @Zazu:</p> <pre><code>// Whatever you image view is, obviously not hardcoded like this let imageView = UIImageView.init(image: UIImage(named: "Image")) imageView.frame = CGRectMake(0, 0, 320, 480) self.view.addSubview(imageView) // Create the gradient layer let gradientLayer = CAGradientLayer.init() gradientLayer.frame = imageView.bounds gradientLayer.colors = [ UIColor.init(colorLiteralRed: 0, green: 0, blue: 0, alpha: 0).CGColor, UIColor.init(colorLiteralRed: 0, green: 0, blue: 0, alpha: 1).CGColor] // Whatever direction you want the fade. You can use gradientLayer.locations // to provide an array of points, with matching colors for each point, // which lets you do other than just a uniform gradient. gradientLayer.startPoint = CGPointMake(1.0, 0.0); gradientLayer.endPoint = CGPointMake(0.0, 0.0); // Use the gradient layer as the mask imageView.layer.mask = gradientLayer; </code></pre>
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    1. POTransparent (alpha) gradient with Core Graphic iPhone
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    1. COYes, it can be possible, but I have to save the resulted image and I do not have a fixed starting and ending point for the gradient, I want it to be parametric.
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