Multiple turbolinks view with bottom navigation bar [Android]

activity_multiple_turbolinks_view.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    tools:context=".MultipleTurbolinksViewActivity">

    <androidx.viewpager2.widget.ViewPager2
        android:id="@+id/view_pager"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        app:layout_constrainedHeight="true"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintBottom_toTopOf="@id/bottom_navigation" />

    <com.google.android.material.bottomnavigation.BottomNavigationView
        app:layout_constraintBottom_toBottomOf="parent"
        android:id="@+id/bottom_navigation"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:labelVisibilityMode="unlabeled"
        app:menu="@menu/bottom_navigation_menu" />

</androidx.constraintlayout.widget.ConstraintLayout>

bottom_navigation_menu.xml

<menu xmlns:android="http://schemas.android.com/apk/res/android">
    <item
        android:id="@+id/home"
        android:enabled="true"
        android:icon="@drawable/ic_home_24"
        android:title="@string/home"/>
    <item
        android:id="@+id/profile"
        android:enabled="true"
        android:icon="@drawable/ic_person_24"
        android:title="@string/profile"/>
</menu>

fragment_turbolinks_view.xml

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <com.basecamp.turbolinks.TurbolinksView
        android:id="@+id/view_turbolinks"
        android:layout_width="match_parent"
        android:layout_height="match_parent"/>

</FrameLayout>

MultipleTurbolinksViewActivity.java

/*
implementation 'androidx.viewpager2:viewpager2:1.1.0-alpha01'
implementation 'com.google.android.material:material:1.1.0-alpha08'
*/

public class MultipleTurbolinksViewActivity extends BaseActivity {

    private ActivityMultipleTurbolinksViewBinding binding;
    private String[] paths = new String[]{"/", "/profile"};

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        binding = ActivityMultipleTurbolinksViewBinding.inflate(getLayoutInflater());
        setContentView(binding.getRoot());

        MultipleTurbolinksViewAdapter multipleTurbolinksViewAdapter =
                new MultipleTurbolinksViewAdapter(
                        getSupportFragmentManager(),
                        getLifecycle(), paths);

        binding.viewPager.setAdapter(multipleTurbolinksViewAdapter);
        binding.viewPager.setUserInputEnabled(false); // To disable swipe

        binding.bottomNavigation.setOnNavigationItemSelectedListener(item -> {
            switch (item.getItemId()) {
                case R.id.home:
                    binding.viewPager.setCurrentItem(0, true);
                    return true;
                case R.id.profile:
                    binding.viewPager.setCurrentItem(1, true);
                    return true;
                default:
                    return false;
            }
        });
    }

    @Override
    protected void onRestart() {
        super.onRestart();
        refreshCurrentFragment();
    }

    @Override
    protected void refresh() {
        // Cold boot and refresh all fragments.
        for (int i = 0; i < paths.length; i++) {
            Fragment fragment = getSupportFragmentManager().findFragmentByTag("f" + i);
            if(!(fragment instanceof TurbolinksViewFragment)) continue;

            ((TurbolinksViewFragment) fragment).resetToColdBoot();
            ((TurbolinksViewFragment) fragment).visitCurrentLocation(true);
        }
    }

    private void refreshCurrentFragment() {
        Fragment currentFragment = getSupportFragmentManager().findFragmentByTag("f" + binding.viewPager.getCurrentItem());
        if(!(currentFragment instanceof TurbolinksViewFragment)) return;

        ((TurbolinksViewFragment) currentFragment).visitCurrentLocation(true);
    }
}

MultipleTurbolinksViewAdapter.java

public class MultipleTurbolinksViewAdapter extends FragmentStateAdapter {
    private String[] paths;

    public MultipleTurbolinksViewAdapter(@NonNull FragmentManager fragmentManager,
                                         @NonNull Lifecycle lifecycle,
                                         String[] paths) {
        super(fragmentManager, lifecycle);
        this.paths = paths;
    }

    @NonNull
    @Override
    public Fragment createFragment(int position) {
        return TurbolinksViewFragment.newInstance(paths[position]);
    }

    @Override
    public int getItemCount() {
        return paths.length;
    }
}

TurbolinksViewFragment.java

public class TurbolinksViewFragment extends Fragment {
    private static final String PATH = "path";
    private String path;
    private FragmentTurbolinksViewBinding binding;
    private TurbolinksSession customTurbolinksSession;

    public TurbolinksViewFragment() {
        // Required empty public constructor
    }

    /**
     * Use this factory method to create a new instance of
     * this fragment using the provided parameters.
     *
     * @param path Path to visit.
     * @return A new instance of fragment TurbolinksViewFragment.
     */
    public static TurbolinksViewFragment newInstance(String path) {
        TurbolinksViewFragment fragment = new TurbolinksViewFragment();
        Bundle args = new Bundle();
        args.putString(PATH, path);
        fragment.setArguments(args);
        return fragment;
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        if (getArguments() != null) {
            path = getArguments().getString(PATH);
        }
    }

    @Override
    public View onCreateView(@NonNull LayoutInflater inflater,
                             ViewGroup container,
                             Bundle savedInstanceState) {
        binding = FragmentTurbolinksViewBinding.inflate(inflater, container, false);

        Activity activity = getActivity();
        if(activity == null) {
            Log.d("NULL", "TurbolinksViewFragment - onCreateView - getActivity is null");
            return null;
        }

        // Setup a new turbolinks session
        customTurbolinksSession = TurbolinksSession.getNew(activity);
        setupTurbolinksSession(customTurbolinksSession);

        visitCurrentLocation(false);

        return binding.getRoot();
    }

    public void resetToColdBoot() {
        customTurbolinksSession.resetToColdBoot();
    }

    public void visitCurrentLocation(boolean restoreWithCachedSnapshot) {
        Helper.turbolinksVisit(getActivity(), customTurbolinksSession,
                binding.viewTurbolinks, Constants.BASE_URL + path, restoreWithCachedSnapshot);
    }

    /* Not required */
    private void setupTurbolinksSession(TurbolinksSession turbolinksSession) {
        turbolinksSession.setPullToRefreshEnabled(false);
        turbolinksSession.getWebView().addJavascriptInterface(JsBridge.getInstance(), "AndroidBridge");
        turbolinksSession.getWebView().setWebChromeClient(CustomChromeClient.getInstance());
        turbolinksSession.getWebView().getSettings()
                .setUserAgentString(Helper.getUserAgentString(getActivity()));
    }
}