Are there any analogues of [NSString stringWithFormat:] for NSAttributedString

Question

Usually I build app interface in interface builder. Sometimes design requires to use attributed strings (fonts, colors and etc.). It\'s easy to configure if string is static

Answer 1

Here's a category I wrote to add the method to NSAttributedString. You'll have to pass in NULL as the last argument to the function however, otherwise it will crash to the va_list restrictions on detecting size. [attributedString stringWithFormat:attrFormat, attrArg1, attrArg2, NULL];

@implementation NSAttributedString(stringWithFormat)

+(NSAttributedString*)stringWithFormat:(NSAttributedString*)format, ...{
    va_list args;
    va_start(args, format);

    NSMutableAttributedString *mutableAttributedString = (NSMutableAttributedString*)[format mutableCopy];
    NSString *mutableString = [mutableAttributedString string];

    while (true) {
        NSAttributedString *arg = va_arg(args, NSAttributedString*);
        if (!arg) {
            break;
        }
        NSRange rangeOfStringToBeReplaced = [mutableString rangeOfString:@"%@"];
        [mutableAttributedString replaceCharactersInRange:rangeOfStringToBeReplaced withAttributedString:arg];
    }

    va_end(args);

    return mutableAttributedString;
}
@end