MealListActivity.java

public class MealListActivity extends AppCompatActivity {

    private CoNaObiadDbHelper dbHelper;
    private String mealName = "";

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

        final MealContract mealContract = new MealContract();
        dbHelper = new CoNaObiadDbHelper(this);

        ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, mealContract.getAllMeals(dbHelper));

        ListView listView = (ListView) findViewById(R.id.meal_list_view);
        listView.setAdapter(adapter);
    }
}