iOS OC匹配多个文字修改颜色和字号

1、传入字符串数组，通过NSMutableAttributedString修改匹配文字

可以根据需要搞成匹配单个字符串

- (NSAttributedString *)applyFontSizeToText:(NSString *)text matchStrings:(NSArray<NSString *> *)matchStrings {
    NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithString:text];
    UIFont *font = [UIFont systemFontOfSize:16]; // 目标字体大小

    for (NSString *match in matchStrings) {
        NSRange searchRange = NSMakeRange(0, text.length);
        NSRange foundRange;

        while (searchRange.location < text.length &&
               (foundRange = [text rangeOfString:match options:NSCaseInsensitiveSearch range:searchRange]).location != NSNotFound) {
            [attributedString addAttribute:NSFontAttributeName value:font range:foundRange];
            [attributedString addAttribute:NSForegroundColorAttributeName value:HexColor(@"#9B9B9B") range:foundRange];

            // 更新搜索范围，避免死循环
            searchRange = NSMakeRange(NSMaxRange(foundRange), text.length - NSMaxRange(foundRange));
        }
    }
    
    return attributedString;
}

调用方法：

NSArray *matchArray = @[@"次/分钟", @"次", @"mmhg", @"小时", @"分钟"];
if (dataString.length != 0) {//避免空字符串
    self.dataLabel.attributedText = [self applyFontSizeToText:self.dataLabel.text matchStrings:matchArray];
}