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copied!<p>I’m guessing the person you spoke with was referring to <a href="https://developer.apple.com/library/ios/#documentation/GraphicsImaging/Reference/CALayer_class/Introduction/Introduction.html" rel="nofollow noreferrer">CALayer</a>. In iOS, every view has a CALayer backing it. Instead of implementing <code>-drawRect:</code> in your view, do this:</p> <ol> <li><a href="https://stackoverflow.com/a/10343287/255489">link with QuartzCore</a></li> <li><code>#import <QuartzCore/QuartzCore.h></code> anywhere you want to use this.</li> <li>Use to your view’s <a href="http://developer.apple.com/library/ios/documentation/uikit/reference/uiview_class/uiview/uiview.html#//apple_ref/occ/instp/UIView/layer" rel="nofollow noreferrer"><code>layer</code></a> property.</li> </ol> <p>Layers behave a lot like views, in that you can have sublayers and superlayers, and layers have properties for things like background color, and they can be animated. A couple of subclasses that will probably be useful for your purposes are <a href="https://developer.apple.com/library/ios/#documentation/GraphicsImaging/Reference/CAGradientLayer_class/Reference/Reference.html" rel="nofollow noreferrer"><code>CAGradientLayer</code></a> and <a href="https://developer.apple.com/library/ios/#documentation/GraphicsImaging/Reference/CAShapeLayer_class/Reference/Reference.html" rel="nofollow noreferrer"><code>CAShapeLayer</code></a>. For more on how to use layers, refer to the <a href="http://developer.apple.com/library/ios/#documentation/Cocoa/Conceptual/CoreAnimation_guide/Introduction/Introduction.html" rel="nofollow noreferrer">Core Animation Programming Guide</a>.</p>

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