IssueTracker

After the PageTransformer is set in ViewPager2, the ItemAnimator is deactivated.

But how do I add a delete animation after the item is removed in ViewPager2, or an animation that a new item enters.

PageTransformer does not seem to be able to do it.

 public void setPageTransformer(@Nullable PageTransformer transformer) {

        if (transformer != null) {
            if (!mSavedItemAnimatorPresent) {
                mSavedItemAnimator = mRecyclerView.getItemAnimator();
                mSavedItemAnimatorPresent = true;
            }
            mRecyclerView.setItemAnimator(null);//??????????????????????
        } else {
            if (mSavedItemAnimatorPresent) {
                mRecyclerView.setItemAnimator(mSavedItemAnimator);
                mSavedItemAnimator = null;
                mSavedItemAnimatorPresent = false;
            }
        }
 
        if (transformer == mPageTransformerAdapter.getPageTransformer()) {
            return;
        }
        mPageTransformerAdapter.setPageTransformer(transformer);
        requestTransform();
    }