/**

 *  获取UIColor对象的HSB字符串值。

 *

 */

- (NSString *)getHSBStringByColor:(UIColor *)originColor {

  // Method provided by the Colours class extension

 NSDictionary *hsbDict = [selfgetHSBAValueByColor:originColor];

  return [NSStringstringWithFormat:@"(%0.2f, %0.2f, %0.2f)",

          [hsbDict[@"H"]floatValue],

          [hsbDict[@"S"]floatValue],

          [hsbDict[@"B"]floatValue]];

}

/**

 *  获取UIColor对象的HSBA值。

 *

 */

- (NSDictionary *)getHSBAValueByColor:(UIColor *)originColor

{

 CGFloat h=0,s=0,b=0,a=0;

 if ([originColor respondsToSelector:@selector(getHue:saturation:brightness:alpha:)]) {

    [originColorgetHue:&h saturation:&sbrightness:&b alpha:&a];

  }

 return @{@"H":@(h),

          @"S":@(s),

          @"B":@(b),

          @"A":@(a)};

}

iOS 获取UIColor对象的HSB字符串值。