DemoLikeTumblrActivity.java 文件源码

private Animator createHideItemAnimator(final View item) {
  final float dx = centerItem.getX() - item.getX();
  final float dy = centerItem.getY() - item.getY();

  Animator anim = ObjectAnimator.ofPropertyValuesHolder(
      item,
      AnimatorUtils.scaleX(1f, 0f),
      AnimatorUtils.scaleY(1f, 0f),
      AnimatorUtils.translationX(0f, dx),
      AnimatorUtils.translationY(0f, dy)
  );

  anim.setInterpolator(new DecelerateInterpolator());
  anim.addListener(new AnimatorListenerAdapter() {
    @Override
    public void onAnimationEnd(Animator animation) {
      super.onAnimationEnd(animation);
      item.setTranslationX(0f);
      item.setTranslationY(0f);
    }
  });
  anim.setDuration(50);
  return anim;
}