在每个孩子中添加带有EditTexts的ListView - Android Studio

<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <ListView
        android:id="@+id/listView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"/>

    <Button
        android:id="@+id/addButton"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Add Child"/>

</LinearLayout>

public class CustomAdapter extends BaseAdapter {

    private List<String> data;
    private LayoutInflater inflater;

    public CustomAdapter(Context context, List<String> data) {
        this.data = data;
        inflater = LayoutInflater.from(context);
    }

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

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

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(final int position, View convertView, ViewGroup parent) {
        ViewHolder holder;

        if (convertView == null) {
            convertView = inflater.inflate(R.layout.list_item, parent, false);
            holder = new ViewHolder();
            holder.editText = convertView.findViewById(R.id.editText);
            convertView.setTag(holder);
        } else {
            holder = (ViewHolder) convertView.getTag();
        }

        holder.editText.setText(data.get(position));
        holder.editText.addTextChangedListener(new TextWatcher() {
            @Override
            public void beforeTextChanged(CharSequence s, int start, int count, int after) {
            }

            @Override
            public void onTextChanged(CharSequence s, int start, int before, int count) {
                data.set(position, s.toString());
            }

            @Override
            public void afterTextChanged(Editable s) {
            }
        });

        return convertView;
    }

    private static class ViewHolder {
        EditText editText;
    }
}

public class MainActivity extends AppCompatActivity {

    private ListView listView;
    private Button addButton;
    private CustomAdapter adapter;
    private List<String> data;

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

        listView = findViewById(R.id.listView);
        addButton = findViewById(R.id.addButton);

        data = new ArrayList<>();
        adapter = new CustomAdapter(this, data);
        listView.setAdapter(adapter);

        addButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                data.add("");
                adapter.notifyDataSetChanged();
            }
        });
    }
}