如何在ListView中居中显示项目

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:gravity="center">

    <!-- 在这里定义项目的布局 -->

</LinearLayout>

public class CustomAdapter extends ArrayAdapter<String> {

    public CustomAdapter(Context context, List<String> data) {
        super(context, R.layout.list_item, data);
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        View view = convertView;
        if (view == null) {
            LayoutInflater inflater = LayoutInflater.from(getContext());
            view = inflater.inflate(R.layout.list_item, parent, false);
        }

        // 在这里绑定数据到自定义布局中的视图

        return view;
    }
}

public class MainActivity extends AppCompatActivity {

    private ListView listView;
    private CustomAdapter adapter;

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

        listView = findViewById(R.id.listView);

        List<String> data = new ArrayList<>();
        // 添加数据到列表

        adapter = new CustomAdapter(this, data);
        listView.setAdapter(adapter);
    }
}