在我们的开发中经常需要改变某段文本中部分文字的颜色，很多同学都比较头疼实现方法，我在开发中也遇到过，现封装了下，方便于大家使用。有两个版本一个是OC版，另一个是Swift版本。

先上图看效果：

Paste_Image.png

Swift版

//MARK  富文本部分字体飘灰
func setupAttributeString(text : NSString, highlightText : NSString) -> NSMutableAttributedString {
        let hightlightTextRange = text.rangeOfString(highlightText as String)
        let attributeStr = NSMutableAttributedString.init(string: text as String)
            attributeStr.addAttribute(NSForegroundColorAttributeName, value: UIColor(hexString: "#0000ff"), range: hightlightTextRange)
        self.fileNameLabel?.lineBreakMode = .ByCharWrapping
        self.fileNameLabel?.attributedText = attributeStr
        return attributeStr
    }

OC版

#pragma mark - 富文本部分字体飘灰
- (NSMutableAttributedString *)setupAttributeString:(NSString *)text highlightText:(NSString *)highlightText {
    NSRange hightlightTextRange = [text rangeOfString:highlightText];
    NSMutableAttributedString *attributeStr = [[NSMutableAttributedString alloc] initWithString:text];
    if (hightlightTextRange.length > 0) {
        [attributeStr addAttribute:NSForegroundColorAttributeName
                             value:[UIColor colorWithHexString:@"#8c8c8c"]
                             range:hightlightTextRange];
        [attributeStr addAttribute:NSFontAttributeName value:[UIFont boldSystemFontOfSize:13.0f] range:hightlightTextRange];
        self.currentTitleLabel.lineBreakMode = NSLineBreakByTruncatingMiddle;
        self.currentTitleLabel.attributedText = attributeStr;
        return attributeStr;
    }else {
        return [highlightText copy];
    }
}