When scraping images from a website using Flutter, it's common to show a loading indicator, such as an SVG animation or a spinning progress indicator, while the image is being fetched. Here's a step-by-step guide on how to achieve this:

  1. Add dependencies: Make sure you have the necessary dependencies in your pubspec.yaml file. You'll need the http package to fetch the image and the flutter_svg package to display SVG animations.
dependencies: flutter: sdk: flutter http: ^0.13.3 flutter_svg: ^0.22.0
  1. Import required packages:
import 'package:flutter/material.dart'; import 'package:http/http.dart' as http; import 'package:flutter_svg/flutter_svg.dart';
  1. Create a StatefulWidget: Create a StatefulWidget to manage the loading state and the image retrieval process.
class ImageScrapingPage extends StatefulWidget { @override _ImageScrapingPageState createState() => _ImageScrapingPageState(); }
  1. Implement the State class: In the State class, define the loading state, a function to fetch the image, and the build method that displays the loading indicator or the fetched image.
class _ImageScrapingPageState extends State<ImageScrapingPage> { bool isLoading = true; String imageUrl; @override void initState() { super.initState(); fetchImage(); } Future<void> fetchImage() async { try { final response = await http.get(Uri.parse('YOUR_IMAGE_URL')); if (response.statusCode == 200) { // If the request is successful, update the imageUrl and set isLoading to false setState(() { imageUrl = response.body; isLoading = false; }); } else { // Handle error response } } catch (e) { // Handle error } } @override Widget build(BuildContext context) { return Scaffold( appBar: AppBar(title: Text('Image Scraping')), body: Center( child: isLoading ? CircularProgressIndicator() // Display loading indicator : imageUrl != null ? Image.network(imageUrl) // Display the fetched image : SvgPicture.asset('assets/loading.svg'), // Display an SVG animation while loading ), ); } }
  1. Show the ImageScrapingPage in your app: Finally, show the ImageScrapingPage in your app by adding it to your main.dart or any other entry point:
void main() { runApp(MyApp()); } class MyApp extends StatelessWidget { @override Widget build(BuildContext context) { return MaterialApp( home: ImageScrapingPage(), ); } }

Replace 'YOUR_IMAGE_URL' with the actual URL of the image you want to scrape. If you don't have an SVG animation, you can find one online or create a simple one using vector graphics software.

With this implementation, your app will display a loading indicator while fetching the image. Once the image is retrieved, it will be displayed, and the loading indicator will disappear. If there's an error during the fetching process, you can add error handling logic in the fetchImage method to display an error message or retry button.

Have questions or queries?
Get in Touch