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16进制颜色字符串转为UIColor

时间:2014-07-30 17:44:54      阅读:231      评论:0      收藏:0      [点我收藏+]

标签:color转换   16进制颜色   

//16进制颜色(html颜色值)字符串转为UIColor
+(UIColor *) hexStringToColor: (NSString *) stringToConvert
{
     NSString *cString = [[stringToConvert stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]] uppercaseString];
     // String should be 6 or 8 characters
 
     if ([cString length] < 6) return [UIColor blackColor];
     // strip 0X if it appears
     if ([cString hasPrefix:@"0X"]) cString = [cString substringFromIndex:2];
     if ([cString hasPrefix:@"#"]) cString = [cString substringFromIndex:1];
     if ([cString length] != 6) return [UIColor blackColor];
 
     // Separate into r, g, b substrings
 
     NSRange 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 values
     unsigned 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];
}

16进制颜色字符串转为UIColor,布布扣,bubuko.com

16进制颜色字符串转为UIColor

标签:color转换   16进制颜色   

原文地址:http://blog.csdn.net/baron_blogs/article/details/38300471

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