独自Adapter内のgetViewが呼び出されない。

Question

前提・実現したいこと

Javaでandroidアプリ作成の練習中です。
独自adapterを作成してListviewを表示していたコードを、
dateBindingを使用したmvvmパターンで書き直しています。

行き詰まっているところは、
MyAdapter内のgetView以下だけが呼ばれないことです。

発生している問題・エラーメッセージ

MyAdapter.java内のgetViewが呼ばれていないようなので、以下の"GetView_check"がLogに出力されません。

 @Override
    public View getView(int position, View view, ViewGroup viewGroup) {
     System.out.println("GetView_check");

該当のソースコード

package com.websarva.wing.android.trylistviewbydatebinding;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;

import androidx.databinding.DataBindingUtil;

import com.websarva.wing.android.trylistviewbydatebinding.databinding.FoodrowBinding;

import java.util.ArrayList;
import java.util.List;

public class MyAdapter extends BaseAdapter {
    Context context;
    int resource;
    LayoutInflater layoutInflater = null;
    ArrayList<Food> foodList;

    public MyAdapter(Context context) {
        this.context = context;
        this.layoutInflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    }

    public void setFoodList(ArrayList<Food> foodList) {
        this.foodList = foodList;
    }

    @Override
    public int getCount() {
        return foodList.size();
    }

    @Override
    public Object getItem(int position) {
        return foodList.get(position);
    }

    @Override
    public long getItemId(int position) {
        return foodList.get(position).getId();
    }

    @Override
    public View getView(int position, View view, ViewGroup viewGroup) {
     System.out.println("GetView_check");

        Food food = (Food) getItem(position);
        FoodrowBinding foodrowBinding;

        if (view == null) {
            LayoutInflater inflater = LayoutInflater.from(viewGroup.getContext());

            foodrowBinding = FoodrowBinding.inflate(inflater, viewGroup, false);
        } else {
            foodrowBinding = DataBindingUtil.getBinding(view);
        }
        final FoodrowViewModel foodrowViewModel = new FoodrowViewModel(
        );

        foodrowBinding.setViewModel(foodrowViewModel)

        return foodrowBinding.getRoot();
    }

}

package com.websarva.wing.android.trylistviewbydatebinding;


import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ListView;

import androidx.databinding.DataBindingUtil;
import androidx.fragment.app.Fragment;

import com.websarva.wing.android.trylistviewbydatebinding.databinding.ActivityMainBinding;

import java.util.ArrayList;

public class MainFragment extends Fragment {
    MainViewModel fMainViewModel;
    ActivityMainBinding activityMainBinding;
    ListView listView;
    MyAdapter myAdapter;
    ArrayList<Food> list = new ArrayList<>();

    public static MainFragment newInstance() {
        Bundle arguments = new Bundle();
        MainFragment fragment = new MainFragment();
        fragment.setArguments(arguments);
        return fragment;
    }

    public void setViewModel(MainViewModel mainViewModel) {
        fMainViewModel = mainViewModel;
    }


    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        activityMainBinding = DataBindingUtil.inflate(inflater, R.layout.activity_main, container, false);
        activityMainBinding.setViewModel(fMainViewModel);
        activityMainBinding.getViewModel();
        activityMainBinding.getRoot();

        return activityMainBinding.getRoot();
    }

    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);

        setupListAdapter();
    }

    private void setupListAdapter(){

        this.listView =  activityMainBinding.foodListView;

        myAdapter = new MyAdapter(getContext());
        myAdapter.setFoodList(list);
        listView.setAdapter(myAdapter);

        setFood();
        setFood();
        setFood();

    };

    private void setFood() {
        Food food = new Food();
        food.setName("りんご");
        food.setPrice(100);
        list.add(food);
      myAdapter.notifyDataSetChanged();
    }

}

package com.websarva.wing.android.trylistviewbydatebinding;

public class Food {
    long id;
    private String name;
    private int price;

    public long getId() {
        return id;
    }

    public void setId(long id) {
        this.id = id;
    }

    public String getName(){
        return name;
    }

    public void setName(String name){
        this.name=name;
    }

    public int getPrice(){
        return price;
    }

    public void setPrice(int price){
        this.price=price;
    }

}

package com.websarva.wing.android.trylistviewbydatebinding;

import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import androidx.databinding.DataBindingUtil;
import androidx.fragment.app.Fragment;
import androidx.fragment.app.FragmentManager;
import androidx.fragment.app.FragmentTransaction;

import android.os.Bundle;

import com.websarva.wing.android.trylistviewbydatebinding.databinding.ActivityMainBinding;

public class MainActivity extends AppCompatActivity {

    MainViewModel mainViewModel;
    MainFragment mainFragment;

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

        System.out.println("appスタート");

        mainViewModel = new MainViewModel();
        mainFragment = new MainFragment();

        ActivityMainBinding activityMainBinding = DataBindingUtil.setContentView(this, R.layout.activity_main);
        activityMainBinding.setViewModel(mainViewModel);

        mainFragment.setViewModel(mainViewModel);
        mainFragment = findOrCreateViewFragment();

    }
    @NonNull
    private MainFragment findOrCreateViewFragment() {

        mainFragment = (MainFragment) getSupportFragmentManager().findFragmentById(R.id.container);
        if (mainFragment == null) {
            mainFragment = MainFragment.newInstance();
            addFragmentToActivity(getSupportFragmentManager(),
                    mainFragment, String.valueOf(R.id.container));
        }
        return mainFragment;
    }
    public static void addFragmentToActivity (@NonNull FragmentManager fragmentManager,
                                              @NonNull Fragment fragment, String tag) {
//        checkNotNull(fragmentManager);
//         checkNotNull(fragment);

        FragmentTransaction transaction = fragmentManager.beginTransaction();
        transaction.add(fragment, tag);
        transaction.commit();

    }


}

試したこと

MainFragmentからAdapterを呼び出していることは、確認済みです。
Adapter内のgetView以下のみが呼べていないので、Fragment内の記述が間違っているのかなと思って色々調べていますが、初心者なので、行き詰まっています。。。

なお、getView内はすべて呼び出せていないことも確認済みです。

よろしくお願いします。