TubeLab-App-Android/app/src/main/java/app/fedilab/fedilabtube/MainActivity.java

package app.fedilab.fedilabtube;

import android.os.AsyncTask;
import android.os.Bundle;

import androidx.appcompat.app.AppCompatActivity;
import androidx.navigation.NavController;
import androidx.navigation.Navigation;
import androidx.navigation.ui.AppBarConfiguration;
import androidx.navigation.ui.NavigationUI;

import com.google.android.material.bottomnavigation.BottomNavigationView;

import app.fedilab.fedilabtube.asynctasks.RetrievePeertubeInformationAsyncTask;

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);

        try {
            new RetrievePeertubeInformationAsyncTask(MainActivity.this).executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
        } catch (Exception ignored) {
        }

        // 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_discover, R.id.navigation_trending, R.id.navigation_most_liked, R.id.navigation_recently_added, R.id.navigation_home)
                .build();
        NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment);
        NavigationUI.setupActionBarWithNavController(this, navController, appBarConfiguration);
        NavigationUI.setupWithNavController(navView, navController);
    }

}