现在这个代码收到消息后展示在屏幕频闪很严重可以让他更流畅的输出吗给我你改好后的最终代码import dartasync;import packageachievement_viewachievement_viewdart;import packagediodiodart;import packagefluttermaterialdart;import packagemuse_nepu_course

可以尝试使用ListView.builder来优化频闪问题，这里给出修改后的代码：

import 'dart:async';

import 'package:achievement_view/achievement_view.dart'; import 'package:dio/dio.dart'; import 'package:flutter/material.dart'; import 'package:muse_nepu_course/chat/flutter_chat_ui.dart'; import 'package:flutter_chat_types/flutter_chat_types.dart' as types; import 'package:file_picker/file_picker.dart'; import 'package:flutter_markdown/flutter_markdown.dart'; import 'package:http/http.dart' as http; import 'package:muse_nepu_course/global.dart'; import 'package:muse_nepu_course/home.dart'; import 'package:uuid/uuid.dart'; import 'package:path_provider/path_provider.dart'; import 'package:mime/mime.dart'; import 'package:flutter/services.dart' show Clipboard, ClipboardData, Uint8List, rootBundle; import 'dart:convert'; import 'dart:io'; import 'package:image_picker/image_picker.dart';

class chat_gpt extends StatefulWidget { @override _chat_gptState createState() => _chat_gptState(); }

var _filteredStringList = []; var _stringList = []; int _selectedIndex = -1; String? _selectedValue;

class _chat_gptState extends State<chat_gpt> { StreamController<List<types.Message>> _streamController = StreamController(); late String xdata = ''; final _user = const types.User( id: '82091008-a484-4a89-ae75-a22bf8d6f3ac', );

//从assets/prompts.json中读取数据,并转换为List<Map<String, String>> void loadprompts() async { String prompt = await rootBundle.loadString('assets/prompts.json'); _stringList = json.decode(prompt); _filteredStringList = List.from(_stringList); }

int getindex() { return _selectedIndex; }

@override void initState() { super.initState(); Global.bottombarheight = 60;

Dio dio = Dio();
dio
    .get('https://chatgpt-chatgpt-lswirmtbkx.us-east-1.fcapp.run/')
    .then((response) {
  print(response.data);
});
_loadMessages();
loadprompts();

}

@override void dispose() { _streamController.close(); super.dispose(); }

@override Widget build(BuildContext context) { return Scaffold( appBar: AppBar( title: Text('双击对话复制'), backgroundColor: Global.home_currentcolor, //加入返回按鈕 leading: IconButton( icon: Icon(Icons.arrow_back), onPressed: () { //跳转到主页面 Navigator.push(context, MaterialPageRoute(builder: (context) { return HomePage(); })); }, ), actions: [ IconButton( icon: Icon(Icons.settings), onPressed: () { showDialog( context: context, builder: (context) { return Scaffold( appBar: AppBar( title: Text('自动注入消息'), actions: [ IconButton( icon: Icon(Icons.search), onPressed: () { print(Global.messages_pure); }, ), ], ), body: ListView.builder( itemCount: _filteredStringList.length, itemBuilder: (BuildContext context, int index) { String act = _filteredStringList[index]["act"]!; String prompt = _filteredStringList[index]["prompt"]!; return RadioListTile( title: Text("行为: $act"), subtitle: Text("语句: $prompt"), value: index, groupValue: _selectedIndex, onChanged: (int? value) { setState(() { _selectedIndex = value!; _selectedValue = _filteredStringList[_selectedIndex] ["act"]; //发送消息 final textMessage = types.TextMessage( author: _user, createdAt: DateTime.now().millisecondsSinceEpoch, id: const Uuid().v4(), text: _filteredStringList[_selectedIndex] ["prompt"], );

                              _addMessage(textMessage);

                              sendtoserver(
                                textMessage.text,
                              );

                              //返回主页面
                              Navigator.pop(context);
                            });
                          },
                        );
                      },
                    ));
              });
        },
      ),
    ],
  )