如何在导航到下一个屏幕后保持AppBar标题居中

import 'package:flutter/material.dart';

class NextScreen extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Next Screen'),
        centerTitle: true, // 将标题居中显示
      ),
      body: Container(
        // 屏幕内容
      ),
    );
  }
}