iOS 在一个UILabel上显示不同颜色

self.addressLabel = [[UILabel
alloc]initWithFrame:CGRectZero];

        self.addressLabel.textColor = [UIColor
blackColor];

        self.addressLabel.font = [UIFont
systemFontOfSize:15];

        [self.contentView
addSubview:self.addressLabel];

        

        NSMutableAttributedString *noteStr = [[NSMutableAttributedString
alloc]initWithString:[NSString
stringWithFormat:@"[默认地址]哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈"]];

        NSRange redRangeTwo =
NSMakeRange([[noteStr
string] rangeOfString:@"[默认地址]"].location,
[[noteStr string]
rangeOfString:@"[默认地址]"].length);

        [noteStr addAttribute:NSForegroundColorAttributeName
value:[UIColor
redColor] range:redRangeTwo];

        [self.addressLabel
setAttributedText:noteStr];

        [self.addressLabel
sizeToFit];