@class NSArray; @interface PRUIGradientView : UIView @property (copy, nonatomic) NSArray *colors; @property (copy, nonatomic) NSArray *locations; @property (nonatomic) struct CGPoint { double x0; double x1; } startPoint; @property (nonatomic) struct CGPoint { double x0; double x1; } endPoint; + (Class)layerClass; - (id)layer; @end