В каком месте писать код?

Question

[Антон @ Лялин]

Использую fragment для вывода listview, нажатие по listview будет вызывать другой fragment с данными (текст). Поэтому нужно подключить arrayadapter и addlistener на item listview. Вопрос, в каком месте кода лучше всего все это писать?

MainActivity

public class MainActivity extends AppCompatActivity{

    FragmentManager fragmentManager;
    FragmentTransaction fragmentTransaction;
    FragmentList fragmentList;

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

        fragmentManager = getSupportFragmentManager();
        fragmentTransaction = fragmentManager.beginTransaction();

        fragmentList = new FragmentList();

        fragmentTransaction.add(R.id.container, fragmentList);

        fragmentTransaction.commit();

    }

layout MainActivity

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"
    tools:context="com.example.anton.auto.Activity.MainActivity"
    tools:showIn="@layout/app_bar_main">

    <LinearLayout
        android:id="@+id/container"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_marginBottom="0dp"
        android:layout_marginLeft="0dp"
        android:layout_marginRight="0dp"
        android:layout_marginTop="0dp"
        android:orientation="vertical"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent" />
</android.support.constraint.ConstraintLayout>

FragmentList

public class FragmentList extends Fragment{

    ListView listView;

    ArrayAdapter<String> arrayAdapter;

    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        return inflater.inflate(R.layout.list_fragment, null, false);
    }

    @Override
    public void onAttach(Context context) {
        super.onAttach(context);
    }


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

    @Override
    public void onStart() {
        super.onStart();

        listView = (ListView) getActivity().findViewById(R.id.listView);
        String[] array = getResources().getStringArray(R.array.basis);
        arrayAdapter = new ArrayAdapter<>(getActivity().getApplicationContext(),
                android.R.layout.simple_list_item_1,
                array);

        listView.setAdapter(arrayAdapter);

        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                switch (position){
                    case 0:
                        //вызывается второй fragment с webview
                        break;
                    case 1:
                        //вызывается второй fragment с webview
                        break;
                }
            }
        });
    }

    @Override
    public void onResume() {
        super.onResume();
    }

    @Override
    public void onPause() {
        super.onPause();
    }

    @Override
    public void onStop() {
        super.onStop();
    }

    @Override
    public void onDestroyView() {
        super.onDestroyView();
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
    }

    @Override
    public void onDetach() {
        super.onDetach();
    }
}

layout FragmentList

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent">

    <ListView
        android:id="@+id/listView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:scrollbars="vertical"/>
</LinearLayout>