title: Get Animator for LayoutTransition from R.anim XML
body: <p>I have been searching for a while and can't seem to find anything useful on this topic. Is it possible to set the animation for a LayoutTransition to an animation declared in XML? The default animation will fade the view being added or removed from a ViewGroup and shift the other views accordingly, but I want to have a view slide in or out to the side. I have tried the following to set an Animator from Animation object, but it doesn't seem like it did anything. I just set the fields I found to be common across the two types, but really I have no idea what I am doing with animation.</p>
  
  <pre><code>@TargetApi(Build.VERSION_CODES.HONEYCOMB)
  private void setLayoutTransition() {
      LayoutTransition transition = new LayoutTransition();
  
      Animation appearing = AnimationUtils.loadAnimation(context, android.R.anim.slide_in_left);
      Animator aa = transition.getAnimator(LayoutTransition.APPEARING);
      aa.setDuration(appearing.getDuration());
      aa.setInterpolator(appearing.getInterpolator());
  
      Animation disappearing = AnimationUtils.loadAnimation(context, android.R.anim.slide_out_right);
      Animator bb = transition.getAnimator(LayoutTransition.DISAPPEARING);
      bb.setDuration(disappearing.getDuration());
      bb.setInterpolator(disappearing.getInterpolator());
  
      transition.setAnimator(LayoutTransition.APPEARING, aa);
      transition.setAnimator(LayoutTransition.DISAPPEARING, bb);
  
      dashboardLayout.setLayoutTransition(transition);
  }
  </code></pre>