转自：http://blog.csdn.net/wudidalishi/article/details/8028307
注：本宝宝留作笔记参考，感谢作者
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(UIColor *) colorWithHexString: (NSString *)color
{
NSString *cString = [[color stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]] uppercaseString];// String should be 6 or 8 characters
if ([cString length] < 6) {
return [UIColor clearColor];
}// 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 clearColor];// Separate into r, g, b substrings
NSRange range;
range.location = 0;
range.length = 2;//r
NSString *rString = [cString substringWithRange:range];//g
range.location = 2;
NSString *gString = [cString substringWithRange:range];//b
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];
}
