title: Why setAlpha worked in min sdk 8, but don't work on min sdk 9?
body: <p>I'm trying to setAlpha to my rowView but I got an error saying that I need minimum sdk 11. </p>
  
  <pre><code>View rowView = inflater.inflate(R.layout.main, parent, false);
  </code></pre>
  
  <p>Well, I am aware that one of the way to solve this problem is to change my minimum sdk to 11, but I don't want to as I need my minimum sdk to be 8/9.</p>
  
  <p>Funny enough, my friend tried <code>rowView.setAlpha(-80)</code> in min sdk 8, target 16, and it worked fine, but it could not run in mine, which is min sdk 9, target 16.</p>
  
  <p>I tried solving the problem with <code>rowView.getBackground().setAlpha(-80)</code> but there is no alpha effect.</p>
  
  <p>Can someone tell me why is it working in sdk 8, but not 9? What could have been wrong?</p>
  
  <p>*Update</p>
  
  <pre><code>LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
  View rowView = inflater.inflate(R.layout.knowledge_main, parent, false);
  TextView textView = (TextView) rowView.findViewById(R.id.label);
  </code></pre>