はてなブックマーク

@implementation UIColor (Hex) + (id)colorWithHexString:(NSString *)hex alpha:(CGFloat)a { NSScanner *colorScanner = [NSScanner scannerWithString:hex]; unsigned int color; if (![colorScanner scanHexInt:&color]) return nil; CGFloat r = ((color & 0xFF0000) >> 16)/255.0f; CGFloat g = ((color & 0x00FF00) >> 8) /255.0f; CGFloat b = (color & 0x0000FF) /255.0f; //NSLog(@"HEX to RGB >> r:%f g:%f b:%f a:%f\