我试图从Woocommerce API获取产品数据，并尝试在主页上显示此数据的Flutter，但我无法在首页上显示数据.我得到响应.身体成功，并在终端打印，但我不知道为什么它不显示在主屏幕上.有人可以请帮助我解决这个问题吗？
Woocommerce产品我提到的壁纸。
下面是要获取数据的wallpaper.dart文件：

import 'package:flutter/material.dart';
import 'dart:async';
import '../model/wallpaper_model.dart';
import './home.dart';
import '../helper_services/helperservices.dart';

class WallpaperWidget extends StatefulWidget {
  const WallpaperWidget({Key? key}) : super(key: key);

  @override
  State<WallpaperWidget> createState() => _WallpaperWidgetState();
}

class _WallpaperWidgetState extends State<WallpaperWidget> {
  List<Products>? wallpapers;
  var isLoaded = false;

  @override
  void initState() {
    super.initState();
    getData(); // Call getData to fetch wallpapers when the widget is initialized
  }

  getData() async {
    wallpapers = await HelperService().getWallpapers();
    if (wallpapers != null) {
      setState(() {
        isLoaded = true;
      });
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Visibility(
        visible: isLoaded,
        child: ListView.builder(
          itemCount: wallpapers?.length,
            itemBuilder: (context, index) {
              final wallpaper = wallpapers?[index];
              return ListTile(
                title: Text(wallpaper?.name ?? ''),
                // Display other properties of the wallpaper as needed.
              );
            }
        ),
        replacement: Center(
          child: CircularProgressIndicator(),
        ),
      ),
    );
  }
}

字符串
下面是用于API调用的helperservice.dart：

import 'dart:convert';
import 'package:http/http.dart' as http;
import '../model/wallpaper_model.dart'; // Import the Products class from your product_model.dart file

class HelperService {
  final String consumerKey = ''; // Replace with your actual consumer key
  final String consumerSecret = ''; // Replace with your actual consumer secret

  Future<List<Products>> getWallpapers() async {
    final String url = 'https://my_site.in/wp-json/wc/v3/products';

    // Encode consumer key and secret to base64
    final String credentials = base64Encode(
      utf8.encode('$consumerKey:$consumerSecret'),
    );

    try {
      final response = await http.get(
        Uri.parse(url), // Removed the per_page query parameter
        headers: {
          'Authorization': 'Basic $credentials',
        },
      );

      if (response.statusCode == 200) {
        // If the request is successful, parse the response
        List<Products> products = productsFromJson(response.body);
        return products;
      } else {
        throw Exception('Failed to load products');
      }
    } catch (e) {
      print('Error: $e');
      throw Exception('Error: $e');
    }
  }
}

型
我尝试了大部分的方式来展示产品