Flutter高仿微信系列共59篇，从Flutter客户端、Kotlin客户端、Web服务器、数据库表结构、Xmpp即时通讯服务器、视频通话服务器、腾讯云服务器全面讲解。

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效果图：

实现代码：

//删除并退出对话框
void _deleteAndExistDialog(){
  LoadingDialogUtils.showBaseDialog(context, msg: "确定要删除并退出吗？", clickConfirm: (){
    _deleteAndExist();
  }, clickCancel: (){
  });
}

//删除并退出
void _deleteAndExist() async {
  LoadingDialogUtils.showLoadingContentDialog(context);

  String account = SpUtils.getAccount();
  List<String> members = [account];
  GroupUserBean? groupUserBean =  await GroupUserRepository.getInstance().findGroupUserByAccountAndGroupId(account, widget.groupId);
  //清空群聊信息
  await GroupChatRepository.getInstance().deleteAllGroupChatByGroupId(widget.groupId);
  //删除群聊用户
  await GroupUserRepository.getInstance().deleteGroupUserByGroupId(account, widget.groupId);

  await GroupUserRepository.getInstance().deleteGroupUserByGroupIdAndAccountServer(account, widget.groupId);

  LoadingDialogUtils.dimissLoadingDialog(context);

  Navigator.popUntil(context, (route) {return route.isFirst;});
}

//删除本地群聊数据
@override
Future<void> deleteAllGroupChatByGroupId(String groupId) async {
  String sql = "DELETE FROM wc_group_chat where group_id = '${groupId}'";
  return _queryAdapter.queryNoReturn(sql);
}

//删除本地群成员数据
@override
Future<void> deleteGroupUserByGroupId(String account, String groupId) async {
  String sql = "DELETE FROM ${tableName} where group_id = '${groupId}' and account = '${account}' ";
  return _queryAdapter.queryNoReturn(sql);
}

//删除群成员-web服务器端删除
Future<bool> deleteGroupUserByGroupIdAndAccount(String account, String groupId) async {
  LogUtils.d("删除群成员：${account}, ${groupId}");
  String url = BASE_URL + "groupUser?method=deleteGroupUserByGroupIdAndAccount";
  Response response = await getInstance().postForm(url,{'account': account,'groupId':groupId});
  final responseResult = jsonDecode(response.toString());
  final baseResult = BaseResult.fromJson(responseResult);
  LogUtils.d("删除群成员baseResult：${baseResult.toJson()}");
  return baseResult.isSuccess!;
}