I am unable to apply both the attributes at the same. Either only color or subscript am able to apply. Here is my code
NSMutableAttributedString * attributedText = [[NSMutableAttributedString alloc]initWithString:@"some text"];
[attributedText addAttribute:NSFontAttributeName
value:[UIFont fontWithName:@"Lato-Bold" size:16]
range:NSMakeRange(14,1)];
[attributedText addAttribute:(NSString *)kCTSuperscriptAttributeName value:@-1 range:NSMakeRange(14,1)];
[attributedText addAttribute:(NSString *)kCTForegroundColorAttributeName value:@{ NSForegroundColorAttributeName : [UIColor colorWithRed:85.0/255.0 green:38.0/255.0 blue:152.0/255.0 alpha:1.0] } range:(NSRange){0,6}];
You can try with this code
[str addAttribute:(NSString *)kCTSuperscriptAttributeName value:@-1 range:NSMakeRange(14,1)];
[str setAttributes:@{NSForegroundColorAttributeName:[UIColor greenColor]}
range:(NSRange){0,7}];