Reputation: 453
I'm trying to use both BottomNavigationView and Tabs. Tabs change for each navigation item. Here's my MainActivity
code:
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
BottomNavigationView navView = findViewById(R.id.nav_view);
AppBarConfiguration appBarConfiguration = new AppBarConfiguration.Builder(
R.id.navigation_a, R.id.navigation_b, R.id.navigation_c, R.id.navigation_d)
.build();
NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment);
NavigationUI.setupActionBarWithNavController(this, navController, appBarConfiguration);
NavigationUI.setupWithNavController(navView, navController);
}
This is my navigation_b class:
public class NavigationBFragment extends Fragment {
public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View root = inflater.inflate(R.layout.fragment_ui_b, container, false);
MyTabAdapter adapter = new MyTabAdapter( getActivity().getSupportFragmentManager() );
adapter.add( new TabA(), "Tab A");
adapter.add( new TabB(), "Tab B");
ViewPager viewPager = root.findViewById(R.id.partida_view_pager);
viewPager.setAdapter(adapter);
TabLayout tabLayout = root.findViewById(R.id.partida_tab_layout);
tabLayout.setupWithViewPager(viewPager);
return root;
}
}
My navigation_b layout:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:background="@color/colorLightGray">
<com.google.android.material.tabs.TabLayout
android:id="@+id/partida_tab_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:tabGravity="fill"
app:tabMode="fixed"
app:tabIndicatorHeight="4dp"/>
<androidx.viewpager.widget.ViewPager
android:id="@+id/partida_view_pager"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="@dimen/default_padding" />
</LinearLayout>
When I first click "Navigation B", the tabs works as well, but when I click (for example) "Navigation A" and then "Navigation B", nothing is shown in PageView. What can I do?
Upvotes: 0
Views: 439
Reputation: 453
I just solved the problem. I changed the class MyTabsAdapter
, whilom it extended FragmentPagerAdapter
and now it extends FragmentStatePagerAdapter
. Work as well.
Thanks for this github forum.
Upvotes: 1