OBGradientView is a simple UIView wrapper for CAGradientLayer. It is a plain UIView whose layer is a CAGradientLayer. It is useful if using a view is more convenient than using a layer, e.g. because you want to use autoresizing masks.
OBGradientView exposes all of the layer's gradient-related properties. The getters and setters just forward the calls to the layer so the syntax is just the same as for CAGradientLayer's properties itself. See the documentation for CAGradientLayer for details.
The one exception to this is the colors property: in addition to an array of CGColorRefs, it also accepts an array of UIColor objects. Likewise, the getter returns an array of UIColors. If you need CGColorRefs, access gradientLayer.colors instead.
Written by Ole Begemann
http://oleb.net/blog/2010/04/obgradientview-a-simple-uiview-wrapper-for-cagradientlayer/
April, 2010
Copyright (c) 2010 Ole Begemann
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