How to show superscript for “®” registered symbol?

Question

I\'ve a issue regarding showing registered symbol as superscript. I\'ve used unicode value \\u00AE, but it shows in same line. I\'d like to have it a bit top of remaining texts.

Answer 1

From iOS6 on, you can actually use a NSAttributedString with a UILabel.

To set superscript for the registered trademark symbol, you can use the following category:

#import 
#import "UILabel+ SetSuperScriptForRegisteredTrademarkSymbol.h"

@implementation UILabel (SetSuperScriptForRegisteredTrademarkSymbol)

- (void) setSuperScriptForRegisteredTrademarkSymbol {

    NSMutableAttributedString *mutableAttributedString = [[NSMutableAttributedString alloc] initWithString:self.text];

    NSUInteger count = 0, length = [mutableAttributedString length];
    NSRange range = NSMakeRange(0, length);

    while(range.location != NSNotFound)
    {
        range = [[mutableAttributedString string] rangeOfString:@"®" options:0 range:range];
        if(range.location != NSNotFound) {
            [mutableAttributedString addAttribute:(NSString*)kCTSuperscriptAttributeName value:@"1" range:range];
            range = NSMakeRange(range.location + range.length, length - (range.location + range.length));
            count++;
        }
    }

    self.attributedText = mutableAttributedString;
}

@end