title: android- simple fade out and fade in animation for viewflipper
body: <p>I'm new to android and I don't know a lot about android animation . 
  I've a viewflipper and I want to animate between images inside it .
  This is the code :</p>
  
  <pre><code> runnable = new Runnable() {
             public void run() {
              handler.postDelayed(runnable, 3000);
              imageViewFlipper.setInAnimation(fadeIn);
              imageViewFlipper.setOutAnimation(fadeOut);
              imageViewFlipper.showNext();
             }
            };
            handler = new Handler();
            handler.postDelayed(runnable, 500);
      }
  </code></pre>
  
  <p>The 2 animated file are not good , they animate very badly . 
  I just need a code to fade out the front image and fade in the next image and do the same for all images inside it. </p>
  
  <p>Could anyone help me out ?</p>
  
  <p>thank you</p>