public class MainActivity extends AppCompatActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    final MyAdapter adapter = new MyAdapter(20);

    Button button = findViewById(R.id.button);
    button.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View view) {
            adapter.removeItemAt(adapter.getItemCount() - 1);
        }
    });

    RecyclerView recycler = findViewById(R.id.recycler);
    recycler.setLayoutManager(new LinearLayoutManager(this));
    recycler.addItemDecoration(new MyItemDecoration());
    recycler.setAdapter(adapter);
}

private static class MyItemDecoration extends RecyclerView.ItemDecoration {

    @Override
    public void getItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state) {
        int viewPosition = parent.getChildViewHolder(view).getLayoutPosition();
        int lastPosition = state.getItemCount() - 1;

        outRect.top = 20;
        outRect.bottom = (viewPosition == lastPosition) ? 200 : 0;
    }
}

private static class MyAdapter extends RecyclerView.Adapter<MyViewHolder> {

    private final List<String> list;

    private MyAdapter(int count) {
        this.list = new ArrayList<>();

        for (int i = 0; i < count; ++i) {
            list.add("" + i);
        }
    }

    @Override
    public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        LayoutInflater inflater = LayoutInflater.from(parent.getContext());
        View itemView = inflater.inflate(R.layout.item, parent, false);
        return new MyViewHolder(itemView);
    }

    @Override
    public void onBindViewHolder(MyViewHolder holder, int position) {
        holder.text.setText("item: " + list.get(position));
    }

    @Override
    public int getItemCount() {
        return list.size();
    }

    private void removeItemAt(int position) {
        if (list.size() > 0) {
            list.remove(position);
            notifyItemRemoved(position);
        }
    }
}

private static class MyViewHolder extends RecyclerView.ViewHolder {

    private final TextView text;

    public MyViewHolder(View itemView) {
        super(itemView);
        this.text = itemView.findViewById(R.id.text);
    }
}
}

<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:background="#eee">

    <Button
        android:id="@+id/button"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="REMOVE LAST ITEM"/>

    <android.support.v7.widget.RecyclerView
        android:id="@+id/recycler"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1"/>

</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.CardView
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_margin="4dp">

    <TextView
        android:id="@+id/text"
        android:layout_width="match_parent"
        android:layout_height="64dp"
        android:layout_margin="8dp"
        android:gravity="center"
        android:textColor="#000"
        android:textSize="16sp"/>

</android.support.v7.widget.CardView>