title: What is the use of the View's setTag method?
body: <p>I am implementing a <code>ListView</code> using custom adapters. To improve the performance I am returning the newly inflated <code>View</code> if <code>convertView</code> is null, else returning the recycled <code>View</code>.</p>
  
  <p>Now in this process I used the <em>ViewHolder</em> pattern and used the <code>setTag()</code> method of the <code>View</code>. Initially I thought this is some kind of bookmarking but I've not completely understood the use of it. I've checked different blog post where they just used this in the code.</p>
  
  <p>Can someone please explain me the use of the <code>setTag()</code> method?</p>