title: setAlpha(int a) not working when used inside a thread
body: <p>I am trying to change the view Alpha using setAlpha(int a) method, but it has no effect and also tried to perform alpha animation on same but the same result!. Please help.
  Here is the part of code..</p>
  
  <pre><code>public void run() {
              runOnUiThread(new Runnable() {
  
                      @Override
                      public void run() {
                          myImage.setAlpha(1);
                      }
                  });
  
          }
  </code></pre>