Error on retrieving assets for web (flutter)

问题

I face an issue for Flutter WEB. I followed tutorial on assets from Flutter team (https://flutter.dev/docs/development/ui/assets-and-images) however I receive an error

 ══╡ EXCEPTION CAUGHT BY IMAGE RESOURCE SERVICE ╞════════════════════════════════════════════════════
The following assertion was thrown resolving an image codec:
Unable to load asset: assets/images/my_custom_image.png

When the exception was thrown, this was the stack:
dart:sdk_internal 4602:11                                  throw_
load
package:flutter_web/…/services/asset_bundle.dart:220
dart:sdk_internal 25309:9                                  <fn>
...

Image provider: AssetImage(bundle: null, name: "assets/images/my_custom_image.png")
Image key: AssetBundleImageKey(bundle: PlatformAssetBundle#078a9(), name:
  "assets/images/my_custom_image.png", scale: 1)
════════════════════════════════════════════════════════════════════════════════════════════════════ 

My pubspecs.yaml

flutter:
  uses-material-design: true

  assets:
    - assets/images/

I'm loading image like this

Image.asset("assets/images/my_custom_image.png")

Where did I mess up?

回答1:

Since the status of flutter for web is still preview, assets handling is not the same as for mobile.assets folder should be in the web folder, and reference path for the image should not include assets:

Image.asset("images/my_custom_image.png")

In flutter for web, we do not need to reference the assets in the pubspec.yaml.

来源：https://stackoverflow.com/questions/57738104/error-on-retrieving-assets-for-web-flutter