改变字符串中指定字符的颜色

- (void)viewDidLoad {
NSRange range = [_amountLabel.text rangeOfString:@"0.00"];
[self setTextColor:_amountLabel FontNumber:[UIFont systemFontOfSize:13] AndRange:range AndColor:[UIColor orangeColor]];
}

//设置不同字体颜色
-(void)setTextColor:(UILabel *)label FontNumber:(id)font AndRange:(NSRange)range AndColor:(UIColor *)vaColor
{
NSMutableAttributedString *str = [[NSMutableAttributedString alloc] initWithString:label.text];
//设置字号
[str addAttribute:NSFontAttributeName value:font range:range];
//设置文字颜色
[str addAttribute:NSForegroundColorAttributeName value:vaColor range:range];

label.attributedText = str;
}

例如：356.00元 只显示数字是红色 元是原来的色调
NSRange range2 = [cell.moneyLabel.text rangeOfString:@"元"];
        NSRange range22 = NSMakeRange (0,range2.location);
        [self setTextColor:cell.moneyLabel FontNumber:[UIFont systemFontOfSize:15] AndRange:range22 AndColor:[UIColor redColor]];

 效果：