iOS 设置字体颜色和多种字体

    NSMutableAttributedString *str = [[NSMutableAttributedString alloc] initWithString:string];

//设置颜色

    [str addAttribute:NSForegroundColorAttributeName

                value:[UIColor blueColor]

                range:NSMakeRange(0,5)];

    [str addAttribute:NSForegroundColorAttributeName

                value:[UIColor redColor]

                range:NSMakeRange(6,12)];

    [str addAttribute:NSForegroundColorAttributeName

                value:[UIColor greenColor]

                range:NSMakeRange(19,6)];

//设置字体

    [str addAttribute:NSFontAttributeName

                value:[UIFont fontWithName:@"Arial" size:30.0]

                range:NSMakeRange(0, 5)];

    [str addAttribute:NSFontAttributeName

                value:[UIFont fontWithName:@"Arial" size:30.0]

                range:NSMakeRange(6, 12)];

    [str addAttribute:NSFontAttributeName

                value:[UIFont fontWithName:@"Arial" size:30.0]

                range:NSMakeRange(19, 6)];

    label.attributedText = str;