StateRecyclerView

attrs_state_recyclerview.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
  <declare-styleable name="StateRecyclerView">
    <attr format="reference"
        name="srv_emptyView"/>
  </declare-styleable>
</resources>

StateRecyclerView.java

public class StateRecyclerView extends RecyclerView {
  private View emptyView;
  private int emptyViewId;

  public StateRecyclerView(Context context) {
    this(context, null);
  }

  public StateRecyclerView(Context context, @Nullable AttributeSet attrs) {
    this(context, attrs, 0);
  }

  public StateRecyclerView(Context context, @Nullable AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);
    init(attrs);
  }

  private void init(@Nullable AttributeSet attrs) {
    TypedArray typedArray = getContext().obtainStyledAttributes(attrs, R.styleable.StateRecyclerView);
    emptyViewId = typedArray.getResourceId(R.styleable.StateRecyclerView_srv_emptyView, 0);
    typedArray.recycle();
  }

  @Override protected void onAttachedToWindow() {
    super.onAttachedToWindow();
    if (emptyViewId != 0) {
      emptyView = ((ViewGroup) getParent()).findViewById(emptyViewId);
    }
    updateEmptyView();
  }

  @Override public void setAdapter(@Nullable RecyclerView.Adapter adapter) {
    if (getAdapter() != null) {
      getAdapter().unregisterAdapterDataObserver(adapterDataObserver);
    }
    if (adapter != null) {
      adapter.registerAdapterDataObserver(adapterDataObserver);
    }
    super.setAdapter(adapter);
    updateEmptyView();
  }

  public void setEmptyView(@NonNull View emptyView) {
    this.emptyView = emptyView;
  }

  private void updateEmptyView() {
    if (emptyView != null && getAdapter() != null) {
      boolean showEmptyView = getAdapter().getItemCount() == 0;
      emptyView.setVisibility(showEmptyView ? VISIBLE : GONE);
      setVisibility(showEmptyView ? GONE : VISIBLE);
    }
  }

  private final AdapterDataObserver adapterDataObserver = new AdapterDataObserver() {
    @Override public void onChanged() {
      super.onChanged();
      updateEmptyView();
    }
  };
}