Flutter & Textfield :如何通过自动删除文本字段中的空格来限制用户使用该空格？

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text('TextField Example'),
        ),
        body: Center(
          child: Padding(
            padding: EdgeInsets.all(16.0),
            child: TextField(
              inputFormatters: [
                NoSpaceFormatter(),
              ],
              decoration: InputDecoration(
                labelText: 'Enter text',
              ),
            ),
          ),
        ),
      ),
    );
  }
}

class NoSpaceFormatter extends TextInputFormatter {
  @override
  TextEditingValue formatEditUpdate(
      TextEditingValue oldValue, TextEditingValue newValue) {
    // 删除输入文本中的空格
    String newText = newValue.text.replaceAll(' ', '');
    return newValue.copyWith(text: newText);
  }
}