title: Customizing the bp_activity_action() returned string in BuddyPress
body: <p>I've been trying to break apart the returned string from bp_activity_action, but have been going in circles.</p>
  
  <p>By default it returns "User" wrote a new post, "Post Title", on the site "Site Title" "Time Stamp"</p>
  
  <p>How can i get the values of "User", "Post Title", and "Site Title" so that I can place them where I want?</p>
  
  <p>Currently my code looks like this:</p>
  
  <pre><code>&lt;?php if ( bp_has_activities( bp_ajax_querystring( 'activity' ) . '&amp;action=new_blog_post' ) ) : ?&gt;
    &lt;?php while ( bp_activities() ) : bp_the_activity();  ?&gt;
      &lt;div class="activity-header"&gt;           
        &lt;?php bp_activity_action(); ?&gt;
      &lt;/div&gt;   
    &lt;?php endwhile; ?&gt;
  &lt;?php endif;?&gt;
  </code></pre>
  
  <p>I have checked through the documentation and haven't been able to find a solution. In the forums I found some suggestions about using filters, but am unfamiliar with their use and could not get it to work.</p>
  
  <p>Any help would be appreciated.</p>