How to get RGB values from UIColor?

Question

I\'m creating a color object using the following code.

curView.backgroundColor = [[UIColor alloc] initWithHue:229 saturation:40 brightness:75 alpha:1];
         


        

Answer 1

Just made a category for this.

NSLog(@"%f", [UIColor blueColor].blue); // 1.000000

Goes something like:

typedef enum { R, G, B, A } UIColorComponentIndices;

@implementation UIColor (EPPZKit)

-(CGFloat)red
{ return CGColorGetComponents(self.CGColor)[R]; }

-(CGFloat)green
{ return CGColorGetComponents(self.CGColor)[G]; }

-(CGFloat)blue
{ return CGColorGetComponents(self.CGColor)[B]; }

-(CGFloat)alpha
{ return CGColorGetComponents(self.CGColor)[A]; }

@end

Part of eppz!kit with more UIColor goodies.