Add extra bottom space to the last item in a RecyclerView in order to avoid overlap information with the FloatingActionButton

BottomDecoratorHelper.java

public class BottomDecoratorHelper extends RecyclerView.ItemDecoration {

  private final int bottomOffset;

  public BottomDecoratorHelper(int bottomOffset) {
    this.bottomOffset = bottomOffset;
  }

  @Override
  public void getItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state) {
    super.getItemOffsets(outRect, view, parent, state);
    int dataSize = state.getItemCount();
    int position = parent.getChildPosition(view);
    if (dataSize > 0 && position == dataSize - 1) {
      outRect.set(0, 0, 0, bottomOffset);
    } else {
      outRect.set(0, 0, 0, 0);
    }

  }

}