package com.example.meinwald; import android.content.Context; import android.os.Bundle; import com.google.android.material.bottomnavigation.BottomNavigationView; import androidx.appcompat.app.AppCompatActivity; import androidx.navigation.NavController; import androidx.navigation.Navigation; import androidx.navigation.ui.AppBarConfiguration; import androidx.navigation.ui.NavigationUI; public class MainActivity extends AppCompatActivity { private static Context context; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); context = getApplicationContext(); setContentView(R.layout.activity_main); BottomNavigationView navView = findViewById(R.id.nav_view); // Passing each menu ID as a set of Ids because each // menu should be considered as top level destinations. AppBarConfiguration appBarConfiguration = new AppBarConfiguration.Builder( R.id.navigation_map, R.id.navigation_areas, R.id.navigation_tasks) .build(); NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment); NavigationUI.setupActionBarWithNavController(this, navController, appBarConfiguration); NavigationUI.setupWithNavController(navView, navController); } public static Context getAppContext() { return context; } }