Флаттер: невозможно загрузить актив - PullRequest
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Флаттер: невозможно загрузить актив

0 голосов
/ 11 января 2020

Я не могу загрузить изображение в качестве фона в контейнер, я добавил изображение в папку активов и добавил его в pubspe c .yaml и показываю мне эту ошибку: 

I/flutter ( 6664): ══╡ EXCEPTION CAUGHT BY IMAGE RESOURCE SERVICE ╞════════════════════════════════════════════════════
I/flutter ( 6664): The following assertion was thrown resolving an image codec:
I/flutter ( 6664): Unable to load asset: assets/images/img.png
I/flutter ( 6664): 
I/flutter ( 6664): When the exception was thrown, this was the stack:
I/flutter ( 6664): #0      PlatformAssetBundle.load (package:flutter/src/services/asset_bundle.dart:221:7)
I/flutter ( 6664): <asynchronous suspension>
I/flutter ( 6664): #1      AssetBundleImageProvider._loadAsync (package:flutter/src/painting/image_provider.dart:484:44)
I/flutter ( 6664): #2      AssetBundleImageProvider.load (package:flutter/src/painting/image_provider.dart:469:14)
I/flutter ( 6664): #3      ImageProvider.resolve.<anonymous closure>.<anonymous closure>.<anonymous closure> (package:flutter/src/painting/image_provider.dart:327:17)
I/flutter ( 6664): #4      ImageCache.putIfAbsent (package:flutter/src/painting/image_cache.dart:160:22)
I/flutter ( 6664): #5      ImageProvider.resolve.<anonymous closure>.<anonymous closure> (package:flutter/src/painting/image_provider.dart:325:84)
I/flutter ( 6664): (elided 13 frames from package dart:async)
I/flutter ( 6664): 
I/flutter ( 6664): Image provider: AssetImage(bundle: null, name: "assets/images/img.png")
I/flutter ( 6664): Image key: AssetBundleImageKey(bundle: PlatformAssetBundle#99877(), name: "assets/images/img.png",
I/flutter ( 6664):   scale: 1.0)
I/flutter ( 6664): ════════════════════════════════════════════════════════════════════════════════════════════════════

код: 

body: Form(
          child: Column(
            children: <Widget>[
               Container(
                 decoration: BoxDecoration(
                   image: DecorationImage(
                     image: AssetImage("assets/images/img.png"),
                     fit: BoxFit.cover,
                   ),
                 ),

Я добавил 

assets:
  - assets/images/

в pubspe c .yaml

папку изображений

the image folder

и 

assets:
  - assets/images/img.png

I/flutter ( 6664): ══╡ EXCEPTION CAUGHT BY IMAGE RESOURCE SERVICE ╞════════════════════════════════════════════════════
I/flutter ( 6664): The following assertion was thrown resolving an image codec:
I/flutter ( 6664): Unable to load asset: assets/images/img.png
I/flutter ( 6664): 
I/flutter ( 6664): When the exception was thrown, this was the stack:
I/flutter ( 6664): #0      PlatformAssetBundle.load (package:flutter/src/services/asset_bundle.dart:221:7)
I/flutter ( 6664): <asynchronous suspension>
I/flutter ( 6664): #1      AssetBundleImageProvider._loadAsync (package:flutter/src/painting/image_provider.dart:484:44)
I/flutter ( 6664): #2      AssetBundleImageProvider.load (package:flutter/src/painting/image_provider.dart:469:14)
I/flutter ( 6664): #3      ImageProvider.resolve.<anonymous closure>.<anonymous closure>.<anonymous closure> (package:flutter/src/painting/image_provider.dart:327:17)
I/flutter ( 6664): #4      ImageCache.putIfAbsent (package:flutter/src/painting/image_cache.dart:160:22)
I/flutter ( 6664): #5      ImageProvider.resolve.<anonymous closure>.<anonymous closure> (package:flutter/src/painting/image_provider.dart:325:84)
I/flutter ( 6664): (elided 13 frames from package dart:async)
I/flutter ( 6664): 
I/flutter ( 6664): Image provider: AssetImage(bundle: null, name: "assets/images/img.png")
I/flutter ( 6664): Image key: AssetBundleImageKey(bundle: PlatformAssetBundle#c1182(), name: "assets/images/img.png",
I/flutter ( 6664):   scale: 1.0)
I/flutter ( 6664): ════════════════════════════════════════════════════════════════════════════════════════════════════

Ответы [ 2 ]

2 голосов
/ 11 января 2020

нужно добавить вот так 

flutter:
  assets:
    - assets/images/img.png
0 голосов
/ 24 апреля 2020

В моем случае мне понадобилось свойство package , так как изображение было в моем проекте library , и я запускал проект example .

пакет: [ваш родительский каталог или имя проекта]

например. Мой проект называется 'flutter_demo' 

AssetImage('assets/images/ic_welcome.png', package: 'flutter_demo'),

pubspect.yaml 

flutter:
  assets:
    - assets/images/

Структура каталогов: 

flutter_demo
  -- assets
    -- images
      -- ic_welcome.png
...