小编Nic*_*ima的帖子

早上好，我正在尝试在主页上放置一个 Carousel 以查找 Firebase 数据，但由于某种原因，当我第一次加载应用程序时，它会显示以下消息：

???????? Exception caught by widgets library ????????????????????????????????????? ??????????????????
The following _CastError was thrown building DotsIndicator (animation: PageController # 734f9 (one client, offset 0.0), dirty, state: _AnimatedState # 636ca):
Null check operator used on a null value

屏幕看起来像这样：

进行热重载后，错误继续出现，但图像已成功加载，我可以做些什么提示？

家庭经理：

import 'package:cloud_firestore/cloud_firestore.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:provantagens_app/models/section.dart';

class HomeManager extends ChangeNotifier{
  HomeManager({this.images}){
    _loadSections();
    images = images ?? [];
  }


  void addSection(Section section){
    _editingSections.add(section);
    notifyListeners();
  }



  final List<dynamic> _sections = [];
  List<String> images;
  List<dynamic> newImages;
  List<dynamic> …