Flutter：无法加载资源图像提供程序：AssetImage（bundle：null，名称：“assets/images/rose.jpg”）

Question

我无法将图像作为背景上传到堆栈，我已将图像添加到资产文件夹中并将其添加到 pubspec.yaml 并向我显示该错误：

Exception caught by image resource service.
The following assertion was thrown resolving an image codec:
Unable to load asset: assets/images/rose.jpg
When the exception was thrown, this was the stack: 
#0      PlatformAssetBundle.load (package:flutter/src/services/asset_bundle.dart:225:7)
<asynchronous suspension>
#1      AssetBundleImageProvider._loadAsync (package:flutter/src/painting/image_provider.dart:668:31)
#2      AssetBundleImageProvider.load (package:flutter/src/painting/image_provider.dart:651:14)
#3      ImageProvider.resolveStreamForKey.<anonymous closure> (package:flutter/src/painting/image_provider.dart:504:13)
...
Image provider: AssetImage(bundle: null, name: "assets/images/rose.jpg")
Image key: AssetBundleImageKey(bundle: PlatformAssetBundle#dea48(), name: "assets/images/rose.jpg", scale: 1.0)

代码：

  return new Scaffold(
  backgroundColor: Colors.greenAccent,

  body: new Stack(
    children: [
      new Image(
        image: new AssetImage("assets/images/rose.jpg"),
        fit: BoxFit.cover,
      ),
    ],
  ),

);

我的资产文件夹

Answer 1

跑啊flutter clean跑啊。