VancedMicroG/play-services-core/src/main/java/org/microg/gms/ui/SettingsActivity.java

package org.microg.gms.ui;

import android.os.Bundle;

import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;
import androidx.navigation.NavController;
import androidx.navigation.fragment.NavHostFragment;
import androidx.navigation.ui.AppBarConfiguration;
import androidx.navigation.ui.NavigationUI;

import com.mgoogle.android.gms.R;

public class SettingsActivity extends AppCompatActivity {
    private AppBarConfiguration appBarConfiguration;

    private NavController getNavController() {
        return ((NavHostFragment)getSupportFragmentManager().findFragmentById(R.id.navhost)).getNavController();
    }

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.settings_root_activity);

        appBarConfiguration = new AppBarConfiguration.Builder(getNavController().getGraph()).build();
        NavigationUI.setupActionBarWithNavController(this, getNavController(), appBarConfiguration);
    }

    @Override
    public boolean onSupportNavigateUp() {
        return NavigationUI.navigateUp(getNavController(), appBarConfiguration) || super.onSupportNavigateUp();
    }
}