UIColor+Hex

#import <UIKit/UIKit.h>

@interface UIColor (Hex)

+ (UIColor *)colorWithHex:(long)hexColor;
+ (UIColor *)colorWithHex:(long)hexColor alpha:(float)opacity;

@end


#import "UIColor+Hex.h"

@implementation UIColor (Hex)

+ (UIColor*) colorWithHex:(long)hexColor;
{
    return [UIColor colorWithHex:hexColor alpha:1.];    
}

+ (UIColor *)colorWithHex:(long)hexColor alpha:(float)opacity
{
    float red = ((float)((hexColor & 0xFF0000) >> 16))/255.0;
    float green = ((float)((hexColor & 0xFF00) >> 8))/255.0;
    float blue = ((float)(hexColor & 0xFF))/255.0;
    return [UIColor colorWithRed:red green:green blue:blue alpha:opacity];  
}   

@end

UIColor+Hex

原文：http://www.cnblogs.com/frounk/p/4800483.html