message: Created view field on TabFragment
diff: @@ -227,18 +227,20 @@ public class TabBarView extends ViewPager {
  public static class TabFragment extends Fragment {
  TabBarItemView tabBarItem;
  + View view;
  TabFragment(TabBarItemView tabBarItem) {
  super();
  this.tabBarItem = tabBarItem;
  - if (tabBarItem.content.get(0) instanceof NavigationStackView)
  - ((NavigationStackView) tabBarItem.content.get(0)).onAfterUpdateTransaction();
  + view = tabBarItem.content.get(0);
  + if (view instanceof NavigationStackView)
  + ((NavigationStackView) view).onAfterUpdateTransaction();
  }
  @Nullable
  @Override
  public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
  - return tabBarItem.content.get(0);
  + return view;
  }
  }
  