UIColor之【扩展：#FFFFFF

1+(UIColor*)colorWithHexString:(NSString *)hexColor{
2    
3    if ([hexColor length] == 7 && [hexColor hasPrefix:@"#"]) {
4
5        unsigned int red, green, blue;
6        NSRange range;
7        range.length = 2;
8        
9        range.location = 1;
10        [[NSScanner scannerWithString:[hexColor substringWithRange:range]]scanHexInt:&red];
11        
12        range.location = 3;
13        [[NSScanner scannerWithString:[hexColor substringWithRange:range]]scanHexInt:&green];
14        
15        range.location = 5;
16        [[NSScanner scannerWithString:[hexColor substringWithRange:range]]scanHexInt:&blue];
17        
18        return [UIColor colorWithRed:((float)red/255.0f) green:((float)green/255.0f) blue:((float)blue/255.0f) alpha:1.0f];
19    }
20    return [UIColor clearColor];
21}