flutter 参数传一个范型数据

可以一个个的传参数进去，也可以整个范型传值进去

///窗口模型
class ChatDialogModel {
    
  BottleModel bottleModel;
  int type;

  ChatDialogModel({
    required this.bottleModel, required this.type});
}

//范类

/// app_id : "string"
/// down_time : 0
/// down_user_id : 0
/// drift_bottle_id : 0
/// level : 0
/// no_read_num : 0
/// status : 0
/// text : "string"
/// up_time : 0
/// up_user_id : 0

class BottleModel {
    
  BottleModel({
    
    String? appId,
    int?    downTime,
    int?    downUserId,
    int?    driftBottleId,
    int?    level,
    int?    noReadNum,
    int?    status,
    String? text,
    int?    upTime,
    int?    upUserId,
  }) {
    
    _appId = appId;
    _downTime = downTime;
    _downUserId = downUserId;
    _driftBottleId = driftBottleId;
    _level = level;
    _noReadNum = noReadNum;
    _status = status;
    _text = text;
    _upTime = upTime;
    _upUserId = upUserId;
  }

  BottleModel.fromJson(dynamic json) {
    
    _appId = json['app_id'];
    _downTime = json['down_time'];
    _downUserId = json['down_user_id'];
    _driftBottleId = json['drift_bottle_id'];
    _level = json['level'];
    _noReadNum = json['no_read_num'];
    _status = json['status'];
    _text = json['text'];
    _upTime = json['up_time'];
    _upUserId = json['up_user_id'];
  }

  String? _appId;
  int? _downTime;
  int? _downUserId;
  int? _driftBottleId;
  int? _level;
  int? _noReadNum;
  int? _status;
  String? _text;
  int? _upTime;
  int? _upUserId;

  BottleModel copyWith({
    
    String? appId,
    int? downTime,
    int? downUserId,
    int? driftBottleId,
    int? level,
    int? noReadNum,
    int? status,
    String? text,
    int? upTime,
    int? upUserId,
  }) =>
      BottleModel(
        appId: appId ?? _appId,
        downTime: downTime ?? _downTime,
        downUserId: downUserId ?? _downUserId,
        driftBottleId: driftBottleId ?? _driftBottleId,
        level: level ?? _level,
        noReadNum: noReadNum ?? _noReadNum,
        status: status ?? _status,
        text: text ?? _text,
        upTime: upTime ?? _upTime,
        upUserId: upUserId ?? _upUserId,
      );

  String? get appId => _appId;

  int? get downTime => _downTime;

  int? get downUserId => _downUserId;

  int? get driftBottleId => _driftBottleId;

  int? get level => _level;

  int? get noReadNum => _noReadNum;

  int? get status => _status;

  String? get text => _text;

  int? get upTime => _upTime;

  int? get upUserId => _upUserId;

  Map<String, dynamic> toJson() {
    
    final map = <String, dynamic>{
    };
    map['app_id'] = _appId;
    map['down_time'] = _downTime;
    map['down_user_id'] = _downUserId;
    map['drift_bottle_id'] = _driftBottleId;
    map['level'] = _level;
    map['no_read_num'] = _noReadNum;
    map['status'] = _status;
    map['text'] = _text;
    map['up_time'] = _upTime;
    map['up_user_id'] = _upUserId;
    return map;
  }
}

///弹出留言窗口，里面的参数要带上那个范类，required是该数据是必须的
showChatDialog(context, int state, int index,
    {
    required ChatDialogModel chatDialogModel}) {
    
  showModalBottomSheet(
          shape: const RoundedRectangleBorder(
              borderRadius: BorderRadius.only(
                  topLeft: Radius.circular(24), topRight: Radius.circular(24))),
          isScrollControlled: true,
          enableDrag: false,
          backgroundColor: CommonColors.getColorF5F8F5,
          context: context,
          builder: (context) =>
              ChatDialog(state, index, chatDialogModel: chatDialogModel))//范型数据传给chatDialog
      .then((value) {
    
    EventBusUtil.fire(
        OnCloseBottleRefresh(CloudCustomDataBean.TYPE_DRIFT_BOTTLE));
  });
}

ChatDialog里面

import 'dart:async';
import 'dart:convert';
import 'dart:io';
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:oktoast/oktoast.dart';
import 'package:provider/provider.dart';
import 'package:social_im/constant/constant.dart';
import 'package:social_im/logevent/key_events.dart';
import 'package:social_im/logevent/log_event.dart';
import 'package:social_im/pages/moment/dialog/playDisposition.dart';
import 'package:social_im/provider/bottle_provider.dart';
import 'package:social_im/utils/date_util.dart';
import '../../../common/Global.dart';
import '../../../common/avatar.dart';
import '../../../common/colors.dart';
import '../../../common/globalEventBus.dart';
import '../../../generated/l10n.dart';
import '../../../http/api.dart';
import '../../../http/net_callback.dart';
import '../../../http/rxhttp.dart';
import '../../../http/utils/NetUtils.dart';
import '../../../http/utils/response.dart';
import '../../../im/user_info.dart';
import '../../../models/activity/matchUserBean.dart';
import '../../../models/cloudCustomDataBean.dart';
import '../../../router.dart';
import '../../../utils/image_utile.dart';
import '../../../utils/loadingUtil.dart';
import '../../../utils/textfield_util.dart';
import '../../../widget/user_ex_info.dart';
import '../../moment/dialog/matchFriendDialog.dart';
import '../../person/personItemPage/friendFilesPage.dart';
import '../../widget/myText.dart';
import '../../widget/splitLine.dart';
import '../chat_view.dart';
import '../data/bottle_model.dart';
import '../data/reply_list.dart';
import '../data/unlock_user.dart';

///漂流瓶留言窗口
class ChatDialog extends StatefulWidget {
    
  final ChatDialogModel chatDialogModel;
  int state;
  int index;

  ChatDialog(this.state, this.index, {
    Key? key, required this.chatDialogModel})
      : super(key: key);

  @override
  State<StatefulWidget> createState() => _ChatDialog();
}

class _ChatDialog extends State<ChatDialog> with WidgetsBindingObserver {
    
  final TextEditingController _inputController = TextEditingController();
  final FocusNode _focusNode = FocusNode();
  bool isShowKeyboard = false;
  double keyboardSize = Global.screenHeight * 0.4;
  UnlockUser? _unlockUser;
  ReplyList? replyList;
  late StreamSubscription<MatchDialogEvent> _matchDialogEvent;

  @override
  void initState() {
    
    super.initState();
    _getUnLockUserInfoStatus(widget.chatDialogModel.type == 0
        ? widget.chatDialogModel.bottleModel.upUserId ?? 0
        : widget.chatDialogModel.bottleModel.downUserId ?? 0);//可以在这里直接用了
    WidgetsBinding.instance!.addObserver(this);
    //输入框焦点监测
    _focusNode.addListener(() {
    
      if (_focusNode.hasFocus) {
    
        if (MediaQuery.of(context).viewInsets.bottom > 0) {
    
          isShowKeyboard = true;
        }
      } else {
    
        isShowKeyboard = false;
      }
      if (mounted) {
    
        setState(() {
    });
      }
    });

    _getReplyList(
      driftBottleId: widget.chatDialogModel.bottleModel.driftBottleId,
      status: 1,
      pageTime: DateUtil.getNowDateS(),
    );

    _matchDialogEvent = EventBusUtil.listen((event) {
    
      if (event.matchType == 2 && event.playType == PlayDisposition.BOTTLE) {
    
        unlockUserInfo();
      }
    });
  } //软键盘高度
  
  @override
  Widget build(BuildContext context) {
    
    return GestureDetector(
        onTap: () {
    
          setShowBottomView();
        },
        child: Container(
            decoration: BoxDecorationUtil().setFillBoxDecorationImg(
                'assets/images/match/bg_match_chat.png'),
            height: Global.screenHeight - 140,
            child: Column(mainAxisSize: MainAxisSize.min, children: [
              addHeadView(),
              if (widget.index % 3 == 0)
                Container(
                    width: MediaQuery.of(context).size.width,
                    alignment: Alignment.centerLeft,
                    margin:
                        const EdgeInsets.only(left: 16, right: 16, bottom: 16),
                    padding: const EdgeInsets.only(
                        left: 16, top: 16, bottom: 16, right: 16),
                    decoration: BoxDecoration(
                        color: const Color(0xFFF8F9FF),
                        borderRadius: BorderRadius.circular(12),
                        boxShadow: const [
                          BoxShadow(color: Color(0xFFBCC0EE), blurRadius: 3)
                        ]),
                    child: Column(
                      crossAxisAlignment: CrossAxisAlignment.start,
                      children: [
                        Text(
                          widget.chatDialogModel.bottleModel.text ?? '',
                          style: const TextStyle(
                              color: Color(0xFF333333), fontSize: 18),
                        ),
                        Container(
                          margin: EdgeInsets.only(top: 8),
                          child: Text(
                            DateUtil.formatDateMs(
                                widget.chatDialogModel.bottleModel.downTime! *
                                    1000,
                                format: 'yyyy.MM.dd'),
                            style: const TextStyle(
                                color: Color(0xFF999999), fontSize: 12),
                          ),
                        ),
                      ],
                    )),
              if (widget.index % 3 == 1)
                Container(
                    width: MediaQuery.of(context).size.width,
                    alignment: Alignment.centerLeft,
                    margin:
                        const EdgeInsets.only(left: 16, right: 16, bottom: 16),
                    padding: const EdgeInsets.only(
                        left: 16, top: 16, bottom: 16, right: 16),
                    decoration: BoxDecoration(
                        color: const Color(0xFFEDFAFF),
                        borderRadius: BorderRadius.circular(12),
                        boxShadow: const [
                          BoxShadow(color: Color(0xFFBCE2F1), blurRadius: 3)
                        ]),
                    child: ContentLeftText(
                        widget.chatDialogModel.bottleModel.text ?? '',
                        14,
                        CommonColors.getColor333333)),
              if (widget.index % 3 == 2)
                Container(
                    width: MediaQuery.of(context).size.width,
                    alignment: Alignment.centerLeft,
                    margin:
                        const EdgeInsets.only(left: 16, right: 16, bottom: 16),
                    padding: const EdgeInsets.only(
                        left: 16, top: 16, bottom: 16, right: 16),
                    decoration: BoxDecoration(
                        color: const Color(0xFFFBFFF2),
                        borderRadius: BorderRadius.circular(12),
                        boxShadow: const [
                          BoxShadow(color: Color(0xFFDBEBB6), blurRadius: 3)
                        ]),
                    child: ContentLeftText(
                        widget.chatDialogModel.bottleModel.text ?? '',
                        14,
                        CommonColors.getColor333333)),
              Expanded(
                  child: ChatView(
                bottleModel: widget.chatDialogModel.bottleModel,
              )),
              Container(
                  margin: EdgeInsets.only(
                      left: 15,
                      right: 15,
                      top: 10,
                      bottom: isShowKeyboard ? keyboardSize : 30),
                  padding: const EdgeInsets.only(left: 16),
                  alignment: Alignment.bottomRight,
                  decoration: BoxDecorationUtil()
                      .setFillBoxDecoration(Colors.white, 14.0),
                  child: Row(
                      mainAxisSize: MainAxisSize.max,
                      mainAxisAlignment: MainAxisAlignment.center,
                      crossAxisAlignment: CrossAxisAlignment.center,
                      children: [
                        Expanded(
                            child: TextField(
                                controller: _inputController,
                                onSubmitted: (s) {
    
                                  // onSubmitted(s, context);
                                },
                                focusNode: _focusNode,
                                autocorrect: false,
                                textAlign: TextAlign.left,
                                keyboardType: TextInputType.text,
                                textInputAction: TextInputAction.send,
                                cursorColor: CommonColors.getThemeColor(),
                                decoration: const InputDecoration(
                                    border: InputBorder.none,
                                    isCollapsed: true,
                                    isDense: true),
                                style: const TextStyle(fontSize: 14))),
                        GestureDetector(
                            onTap: () {
    
                              String s = _inputController.text.toString();
                              if (s == '' || s == null) {
    
                                return;
                              }

                              ///todo sendMSG
                              _sendreply(
                                  widget.chatDialogModel.bottleModel
                                          .driftBottleId ??
                                      0,
                                  widget.state,
                                  s);
                              _inputController.clear();
                            },
                            child: Container(
                                padding: const EdgeInsets.only(
                                    top: 12, bottom: 12, right: 19, left: 19),
                                margin: const EdgeInsets.only(left: 16),
                                alignment: Alignment.center,
                                decoration: BoxDecorationUtil()
                                    .setFillBoxDecoration(
                                        CommonColors.getColor27D6BC, 14.0),
                                child: ContentCenterTextBlod(S.current.send_out,
                                    16.0, Colors.white, FontWeight.normal)))
                      ]))
            ])));
  }

  Widget addHeadView() {
    
    return Container(
        color: Colors.transparent,
        padding: const EdgeInsets.only(top: 16, bottom: 13),
        child: Row(mainAxisSize: MainAxisSize.max, children: [
          GestureDetector(
              onTap: () {
    
                closeView();
              },
              child: const Padding(
                  padding: EdgeInsets.only(left: 16, right: 10),
                  child: Image(
                      image: AssetImage('assets/images/[email protected]'),
                      width: 24,
                      height: 24))),
          if (getAvatar() == "") Spacer(),
          if (getAvatar() != "")
            GestureDetector(
                onTap: () {
    },
                child: Padding(
                    padding: const EdgeInsets.only(right: 8),
                    child: PhysicalModel(
                        shape: BoxShape.circle,
                        color: Colors.transparent,
                        borderRadius: BorderRadius.circular(4.8),
                        clipBehavior: Clip.antiAlias,
                        child: Avatar(
                            width: 36,
                            height: 36,
                            radius: 0,
                            avtarUrl: getAvatar(),
                            svgaAvtarUrl: Global.defUserImag)))),
          if (getSex() != 2 || getBirthday() != -1 || getName() != "")
            Expanded(
                child: Column(
                    crossAxisAlignment: CrossAxisAlignment.start,
                    children: [
                  UserExInfoWidget(
                    nickName: getName(),
                    nickFontSize: 17.0,
                    nickFontColor: CommonColors.getColor1A1A1A,
                  ),
                  Padding(
                      padding: const EdgeInsets.only(top: 2),
                      child: Row(
                          mainAxisSize: MainAxisSize.min,
                          crossAxisAlignment: CrossAxisAlignment.center,
                          children: [
                            Container(
                                alignment: Alignment.center,
                                margin: const EdgeInsets.only(right: 6),
                                padding: const EdgeInsets.fromLTRB(3, 1, 5, 2),
                                child: Row(
                                    mainAxisSize: MainAxisSize.min,
                                    children: [
                                      Image(
                                          image: AssetImage(getSex() == 1
                                              ? 'assets/images/icon_gender_male.png'
                                              : 'assets/images/icon_gender_female.png'),
                                          gaplessPlayback: true,
                                          width: 11,
                                          height: 11),
                                      Padding(
                                          padding:
                                              const EdgeInsets.only(top: 2),
                                          child: ContentText(
                                              '${
    UserInfoUtil().getAge(getBirthday())}',
                                              9.0,
                                              Colors.white))
                                    ]),
                                decoration: BoxDecorationUtil()
                                    .setFillBoxDecoration(
                                        getSex() == 1
                                            ? CommonColors.getColor7E8FF7
                                            : CommonColors.getColorF77EBE,
                                        10.0)),
                            Offstage(
                                offstage: true,
                                child: Container(
                                    padding: const EdgeInsets.only(right: 6),
                                    child: ImageUtile.imageWidget(
                                        'assets/images/vip/[email protected]2x.png',
                                        height: 14)))
                          ]))
                ])),
          GestureDetector(
              onTap: () {
    
                setShowBottomView();
                Future.delayed(const Duration(milliseconds: 100), () {
    
                  if (_unlockUser != null) {
    
                    showUserInfo();
                  } else {
    
                    _getUnLockUserInfoStatus(
                        widget.chatDialogModel.type == 0
                            ? widget.chatDialogModel.bottleModel.upUserId ?? 0
                            : widget.chatDialogModel.bottleModel.downUserId ??
                                0, callBack: () {
    
                      showUserInfo();
                    });
                  }
                  // showUserInfo(playType);
                });
              },
              child: const Padding(
                  padding: EdgeInsets.only(left: 10, right: 16),
                  child: Image(
                      image: AssetImage(
                          'assets/images/match/icon_match_user_info.png'),
                      width: 32,
                      height: 32)))
        ]));
  }

  ///解锁用户信息窗口
  showUserInfo() {
    
    // if (UserInfoUtil()
    // .isMyUser('${widget.chatDialogModel.bottleModel.downUserId}')) {
    
    // MyRouter.pushMy(context, PersonalFilesPage());
    // return;
    // }
    // if (_unlockUser?.unlockStatus == 1) {
    
    // MyRouter.pushMy(
    // context,
    // UserInfoUtil()
    // .isMyUser('${widget.chatDialogModel.bottleModel.downUserId}')
    // ? PersonalFilesPage()
    // : FriendFilesPage(
    // false, '${widget.chatDialogModel.bottleModel.downUserId}'));
    // }
    if (_unlockUser?.unlockStatus == 1) {
    
      if (widget.chatDialogModel.type == 0) {
    
        MyRouter.pushMy(
            context,
            FriendFilesPage(
                false, '${
    widget.chatDialogModel.bottleModel.upUserId}'));
      } else if (widget.chatDialogModel.type != 0) {
    
        MyRouter.pushMy(
            context,
            FriendFilesPage(
                false, '${
    widget.chatDialogModel.bottleModel.downUserId}'));
      }
    } else {
    
      showModalBottomSheet(
          shape: const RoundedRectangleBorder(
              borderRadius: BorderRadius.only(
                  topLeft: Radius.circular(24), topRight: Radius.circular(24))),
          isScrollControlled: true,
          enableDrag: false,
          backgroundColor: CommonColors.getColorF5F8F5,
          context: context,
          builder: (context) => MatchFriendDialog(
              2,
              PlayDisposition.BOTTLE,
              MatchUserBean(
                  userID: _unlockUser?.userInfo?.userId,
                  nickName: _unlockUser?.userInfo?.nickname,
                  avatar: _unlockUser?.userInfo?.avatar,
                  // avatarThumb:_unlockUser?.userInfo?.avatarThumb,
                  sign: _unlockUser?.userInfo?.sign,
                  sex: _unlockUser?.userInfo?.sex,
                  birthday: _unlockUser?.userInfo?.birthday,
                  vipLevel: _unlockUser?.userInfo?.vipLevel
                  // vipExpirationTime:_unlockUser?.userInfo?.vipExpirationTime
                  )));
    }
  }

  setShowBottomView() {
    
    TextFieldUtil.stowTheKeyboard(context);
  }

  closeView() {
    
    setShowBottomView();
    Future.delayed(const Duration(milliseconds: 100), () {
    
      Navigator.pop(context);
    });
  }
}

///窗口模型
class ChatDialogModel {
    
  BottleModel bottleModel;
  int type;

  ChatDialogModel({
    required this.bottleModel, required this.type});
}

///弹出留言窗口
showChatDialog(context, int state, int index,
    {
    required ChatDialogModel chatDialogModel}) {
    
  showModalBottomSheet(
          shape: const RoundedRectangleBorder(
              borderRadius: BorderRadius.only(
                  topLeft: Radius.circular(24), topRight: Radius.circular(24))),
          isScrollControlled: true,
          enableDrag: false,
          backgroundColor: CommonColors.getColorF5F8F5,
          context: context,
          builder: (context) =>
              ChatDialog(state, index, chatDialogModel: chatDialogModel))
      .then((value) {
    
    EventBusUtil.fire(
        OnCloseBottleRefresh(CloudCustomDataBean.TYPE_DRIFT_BOTTLE));
  });
}

使用方式，调用showChatDialog，传值进去

    Expanded(
                      child: TabBarView(
                          controller: _tabController,
                          children: tabs.map((chose) {
    
                            switch (chose.position) {
    
                              case 0:
                                return MyThrowBottle(
                                  downList: driftBottleList?.downList ?? [],
                                  onItemClicked: (index) {
    
                                    showChatDialog(context, 2, index,
                                        chatDialogModel: ChatDialogModel(
                                            type: 0,
                                            bottleModel: driftBottleList
                                                    ?.downList![index] ??
                                                BottleModel()));
                                  },
                                );
                              case 1:
                                return MyBottle(
                                    upList: driftBottleList?.upList ?? [],
                                    onItemClicked: (index) {
    
                                      showChatDialog(context, 1, index,
                                          chatDialogModel: ChatDialogModel(
                                              type: 1,
                                              bottleModel: driftBottleList
                                                      ?.upList![index] ??
                                                  BottleModel()));
                                    });
                              default:
                                return Container();
                            }
                          }).toList()))