Objective-C Language NSAttributedString How you create a tri-color attributed string.
Example
NSMutableAttributedString * string = [[NSMutableAttributedString alloc] initWithString:@"firstsecondthird"];
[string addAttribute:NSForegroundColorAttributeName value:[UIColor redColor] range:NSMakeRange(0,5)];
[string addAttribute:NSForegroundColorAttributeName value:[UIColor greenColor] range:NSMakeRange(5,6)];
[string addAttribute:NSForegroundColorAttributeName value:[UIColor blueColor] range:NSMakeRange(11,5)];
Range : start to end string
Here we have firstsecondthird string so in first we have set range (0,5) so from starting first character to fifth character it will display in green text color.
