Keyboard opening or closing causes modified widget.model.msg values

[yaolv7]

sorry , I am English is not so good.

Quesion: TextFieldl input value, Keyboard opening or closing causes modified widget.model.msg values 问题描述：TextFieldl输入值修改widget.model.msg，键盘打开或关闭，导致已经修改的widget.model.msg值被重置了

plugin version：v5.8.4 & 5.9.0-beta 插件版本：v5.8.4 & 5.9.0-beta

flutter version: 3.10.5 • channel stable flutter版本：3.10.5 • channel stable

How to solve this problem? Thanks 有什么好办法解决这个问题？谢谢

exemple : 代码例子：

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

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

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
       return ScreenUtilInit(
      designSize: const Size(375, 690),
      minTextAdapt: true,
      splitScreenMode: true,
      builder: (buildContext, widget) => MaterialApp(
        title: 'Keyboard Bug Demo',
        theme: ThemeData(
          colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
          useMaterial3: true,
        ),
        home: MyHomePage(model: Model(msg: DateTime.now().toString())),
      ),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({super.key, required this.model});

  final Model model;

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        backgroundColor: Theme.of(context).colorScheme.inversePrimary,
        title: const Text('Keyboard Bug Demo'),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            Text(
              'identityHashCode：${identityHashCode(widget.model)} \n msg：${widget.model.msg}',
              style: Theme.of(context).textTheme.headlineMedium,
            ),
            TextField(
              decoration: const InputDecoration(
                hintText: 'Open Keyboard',
              ),
              onChanged: (v) {
                setState(() {
                  widget.model.msg = v;
                });
              },
            ),
            const SizedBox(
              height: 20,
            ),
            ElevatedButton(
              onPressed: () {
                FocusScope.of(context).requestFocus(FocusNode());
              },
              child: const Text(
                'Close Keyboard',
                style: TextStyle(fontSize: 15),
              ),
            ),
          ],
        ),
      ),
    );
  }
}

class Model {
  Model({
    this.msg,
  });

  String? msg;
}

[Mounir-Bouaiche]

@yaolv7 Use child property.