http://stackoverflow.com/questions/42274607/shared-element-transition-on-cardview-with-radius?noredirect=1#comment71706778_42274607

transition.java

<!-- 
  ListActivity.java 
-->

  @Override public void onAnimalClick(View view, Animal animal) {
    ImageView ivTarget = (ImageView) view.findViewById(R.id.iv_image);
    Intent intent = getBundledIntent(animal);

    launchDetailActivity(ivTarget, intent);
  }
  
  private void launchDetailActivity(View view, Intent intent) {
    if (isSupportActivityTransition()) {
      ActivityOptionsCompat option =
          ActivityOptionsCompat.makeSceneTransitionAnimation(ListActivity.this, view,
              "animalImage");

      startActivity(intent, option.toBundle());
    } 
  }

  private Intent getBundledIntent(Animal animal) {
    Intent intent = new Intent(this, DetailActivity.class);
    intent.putExtra(DetailActivity.EXTRA_ANIMAL_RES_ID, animal);
    return intent;
  }
<!-- 
  DetailActivity.java 
-->
// get the image res from bundle 
    AnimalGenerator.Animal animal = getIntent().getParcelableExtra(EXTRA_ANIMAL_RES_ID);
    activityDetailBinding.setAnimal(animal);