flutterdartflutter-image

How to prevent caching images from network flutter?

I have tried all of the following Widget to load images from network :

And also their ImageProvider :

There is no bool to choose not to cache images. The only way i have found is to load the ImageProvider like in initState() and then call evict() right after.

I don't really know if this works actually or if this is the best way to do...

Is there any way to prevent caching from network "natively" ?

Solution

  • I have just created a widget that gets the image as a URL and then download it as Uint8List and show it in a Image.memory widget.

    You can use it like this:

    NonCacheNetworkImage('https://riverpod.dev/img/logo.png'),

    import 'dart:typed_data';

import 'package:flutter/material.dart';
import 'package:http/http.dart';

class NonCacheNetworkImage extends StatelessWidget {
  const NonCacheNetworkImage(this.imageUrl, {Key? key}) : super(key: key);
  final String imageUrl;
  Future<Uint8List> getImageBytes() async {
    Response response = await get(Uri.parse(imageUrl));
    return response.bodyBytes;
  }

  @override
  Widget build(BuildContext context) {
    return FutureBuilder<Uint8List>(
      future: getImageBytes(),
      builder: (context, snapshot) {
        if (snapshot.hasData) return Image.memory(snapshot.data!);
        return SizedBox(
          width: 100,
          height: 100,
          child: Text("NO DATA"),
        );
      },
    );
  }
}