一、宏定义（10进制表示RGB）
定义
#define COLOR(Red, Green, Blue, Alpha) [UIColor colorWithRed:Red/255.0 green:Green/255.0 blue:Blue/255.0 alpha:Alpha]
使用
COLOR(52, 171, 239, 1.0)
二、UIColor+Extensions（16进制表示RGB）
1、UIColor+Extensions.h
#import <UIKit/UIKit.h>
@interface UIColor (Extensions)
+ (UIColor *)colorWithHex:(long)hexColor;
+ (UIColor *)colorWithHex:(long)hexColor alpha:(CGFloat)alpha;
@end
2、UIColor+Extensions.m
#import "UIColor+Extensions.h"
@implementation UIColor (Extensions)
+ (UIColor *)colorWithHex:(long)hexColor {
CGFloat red = ((CGFloat)((hexColor & 0xFF0000) >> 16))/255.0f;
CGFloat green = ((CGFloat)((hexColor & 0xFF00) >> 8))/255.0f;
CGFloat blue = ((CGFloat)(hexColor & 0xFF))/255.0f;
return [UIColor colorWithRed:red green:green blue:blue alpha:1.0f];
}
+ (UIColor *)colorWithHex:(long)hexColor alpha:(CGFloat)alpha{
CGFloat red = ((CGFloat)((hexColor & 0xFF0000) >> 16))/255.0f;
CGFloat green = ((CGFloat)((hexColor & 0xFF00) >> 8))/255.0f;
CGFloat blue = ((CGFloat)(hexColor & 0xFF))/255.0f;
return [UIColor colorWithRed:red green:green blue:blue alpha:alpha];
}
@end
3、定义和使用
#define HEXCOLOR(hexColor) [UIColor colorWithHex:hexColor]
HEXCOLOR(0xff2a01)
