找不到波动资产图像 [英] Flutter assets image not find

问题描述

我使用Visual Studio代码和Andriod Studio IDE以及其他AVD管理器，但是当我使用图片"资产运行应用程序时出现错误，没有找到资产的文件或变体:assets/puffin.jpeg.

I use Visual studio code and Andriod studio IDE and different AVD managers but when I run app with Image asset get an error No file or variants found for asset: assets/puffin.jpeg.

简单的例子:main.dart

Simple example: main.dart

import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    var title = 'Web Images';

    return MaterialApp(
      title: title,
      home: Scaffold(
        appBar: AppBar(
          title: Text(title),
        ),
        body: Container(
          alignment: Alignment.center,
          child: Image.asset(
            "assets/puffin.jpeg",
            width: 280.0,
          ),
        )
      ),
    );
  }
}

pubspec.yaml

pubspec.yaml

name: flutter_app_test
description: A new Flutter application.
publish_to: 'none' # Remove this line if you wish to publish to pub.dev
version: 1.0.0+1

environment:
  sdk: ">=2.7.0 <3.0.0"

dependencies:
  flutter:
    sdk: flutter
  cupertino_icons: ^0.1.3

dev_dependencies:
  flutter_test:
    sdk: flutter

flutter:
  uses-material-design: true

  assets:
    - assets/puffin.jpeg

扑扑医生

[√] Flutter (Channel stable, v1.17.5, on Microsoft Windows [Version 10.0.18363.959], locale en-US)

[√] Android toolchain - develop for Android devices (Android SDK version 30.0.1)
[√] Android Studio (version 4.0)
[√] VS Code (version 1.47.3)
[√] Connected device (1 available)

• No issues found!

推荐答案

我修复了一个错误，删除了文件夹 .dart_tool 并重新运行应用程序，但错误消失了.

I fix an error I delete folder .dart_tool and rerun app and error gone.

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