Replace & tags from html code with numbe

问题:

I am getting html code from server & I want to display it in UITextView. I need to parse the html & show plain text in UITextView. I am using below code to parse html from this post

Now I need to replace the li tag with the actual numbers . How can I do that ? e.g. Input

<ol>
  <li>Coffee</li>
  <li>Tea</li>
  <li>Milk</li>
</ol>

Output should be

1. Coffee
2. Tea
3. Milk

回答1:

Replace you Function with following and pass your HTML string snippet that you have posted.

NSString *str = @"<ol>"
"<li>Coffee</li>"
"<li>Tea</li>"
"<li>Milk</li>"
"</ol>";

[self stringByStrippingHTML:str];

Function to replace string and Generate Desire output

- (NSString *)stringByStrippingHTML:(NSString *)inputString
{
    NSMutableString *outString;

    if (inputString)
    {
        outString = [[NSMutableString alloc] initWithString:inputString];

        if ([inputString length] > 0)
        {
            NSRange r;
            int index = 1;
            while ((r = [outString rangeOfString:@"<[^>]+>" options:NSRegularExpressionSearch]).location != NSNotFound)
            {
                if([[outString substringWithRange:r] isEqualToString:@"<li>"])
                {
                    outString = [[outString stringByReplacingCharactersInRange:r withString:[NSString stringWithFormat:@"\n %d. ",index++]] mutableCopy];
                }
                else
                    [outString deleteCharactersInRange:r];
            }
        }
    }
    return outString; 
}