No animation on item removal on RecyclerView

Question

I am using RecyclerView for the first time. Everything is working fine except that there is no animation on item removal even though the animation on item addit

Answer 1

Late but might be helpful to someone, who want {search items with animation}

Use below code In your activity or fragment where

yourAdapter.animateTo(filteredModelList);

Use below code in your RecyclerAdapter class

public void animateTo(List models) {
        applyAndAnimateRemovals(models);
        applyAndAnimateAdditions(models);
        applyAndAnimateMovedItems(models);
    }

    private void applyAndAnimateRemovals(List newModels) {
        for (int i = items.size() - 1; i >= 0; i--) {
            final CommonModel model = items.get(i);
            if (!newModels.contains(model)) {
                removeItem(i);
            }
        }
    }

    private void applyAndAnimateAdditions(List newModels) {
        for (int i = 0, count = newModels.size(); i < count; i++) {
            final CommonModel model = newModels.get(i);
            if (!items.contains(model)) {
                addItem(i, model);
            }
        }
    }

    private void applyAndAnimateMovedItems(List newModels) {
        for (int toPosition = newModels.size() - 1; toPosition >= 0; toPosition--) {
            final CommonModel model = newModels.get(toPosition);
            final int fromPosition = items.indexOf(model);
            if (fromPosition >= 0 && fromPosition != toPosition) {
                moveItem(fromPosition, toPosition);
            }
        }
    }

    private CommonModel removeItem(int position) {
        final CommonModel model = items.remove(position);
        notifyItemRemoved(position);
        return model;
    }

    private void addItem(int position, CommonModel model) {
        items.add(position, model);
        notifyItemInserted(position);
    }

    private void moveItem(int fromPosition, int toPosition) {
        final CommonModel model = items.remove(fromPosition);
        items.add(toPosition, model);
        notifyItemMoved(fromPosition, toPosition);
    }