UIColor+WebColor.h web色值、rgb色值转成UIColor

来源：互联网发布：终结者2审判日知乎编辑：程序博客网时间：2024/06/05 08:15

有用的代码，

/** web颜色 @param  stringToConvert  #cfcfcf @return UIColor */+ (UIColor *) colorWithHexString: (NSString *) stringToConvert {NSString *cString = [[stringToConvert stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]] uppercaseString];// String should be 6 or 8 charactersif ([cString length] < 6) return DEFAULT_VOID_COLOR;// strip 0X if it appearsif ([cString hasPrefix:@"0X"]) cString = [cString substringFromIndex:2];if ([cString hasPrefix:@"#"]) cString = [cString substringFromIndex:1];if ([cString length] != 6) return DEFAULT_VOID_COLOR;// Separate into r, g, b substringsNSRange range;range.location = 0;range.length = 2;NSString *rString = [cString substringWithRange:range];range.location = 2;NSString *gString = [cString substringWithRange:range];range.location = 4;NSString *bString = [cString substringWithRange:range];// Scan valuesunsigned int r, g, b;[[NSScanner scannerWithString:rString] scanHexInt:&r];[[NSScanner scannerWithString:gString] scanHexInt:&g];[[NSScanner scannerWithString:bString] scanHexInt:&b];return [UIColor colorWithRed:((float) r / 255.0f)   green:((float) g / 255.0f)blue:((float) b / 255.0f)   alpha:1.0f];}/** RGB颜色 @param  r   @param  g @param  b @param  a @return UIColor */+ (UIColor *)colorRGBWithRed:(CGFloat)r green:(CGFloat)g blue:(CGFloat)b alpha:(CGFloat)a{    return [UIColor colorWithRed:r/255.f green:g/255.f blue:b/255.f alpha:a];}

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