title: How to change the picture ImageView continuously?
body: <p>I have a ImageView inside the app .
  I have 2 photos of the file drawable.
  I want to photo ImagView
   Changeing every second.
  Namely :
   After a second</p>
  
  <pre><code>  imagview.setImageDrawable(getResources().getDrawable(R.drawable.photo1));
  </code></pre>
  
  <p>After seconds</p>
  
  <pre><code>   imagview.setImageDrawable(getResources().getDrawable(R.drawable.photo2));
  </code></pre>
  
  <p>And this process will continue until the end </p>
  
  <p>How I do it ?</p>