我想在后台设置图像,我在项目名称下创建了一个assets文件夹并将图像粘贴到其中,然后我写下了代码。但它显示这样的错误,
I/flutter (13556):
I/flutter (13556): When the exception was thrown, this was the stack:
I/flutter (13556): #0 PlatformAssetBundle.load (package:flutter/src/services/asset_bundle.dart:221:7)
I/flutter (13556): <asynchronous suspension>
I/flutter (13556): #1 AssetBundleImageProvider._loadAsync (package:flutter/src/painting/image_provider.dart:383:44)
I/flutter (13556): <asynchronous suspension>
I/flutter (13556): #2 AssetBundleImageProvider.load (package:flutter/src/painting/image_provider.dart:368:14)
I/flutter (13556): #3 ImageProvider.resolve.<anonymous closure>.<anon`enter code here`ymous closure> (package:flutter/src/painting/image_provider.dart:265:86)
I/flutter (13556): #4 ImageCache.putIfAbsent (package:flutter/src/painting/image_cache.dart:82:22)
I/flutter (13556): #5 ImageProvider.resolve.<anonymous closure> (package:flutter/src/painting/image_provider.dart:265:63)
I/flutter (13556): (elided 8 frames from package dart:async)
I/flutter (13556):
I/flutter (13556): Image provider: AssetImage(bundle: null, name: "assets/app_icon.png")
I/flutter (13556): Image key: AssetBundleImageKey(bundle: PlatformAssetBundle#3950b(), name: "assets/app_icon.png",
I/flutter (13556): scale: 1.0)
@override
Widget build(BuildContext context) {
return new Scaffold(
body: new Container(
decoration: new BoxDecoration(
image: new DecorationImage(
image: new AssetImage("assets/app_icon.png"),
fit: BoxFit.cover,
),
),
child: null /* add child content content here */,
),
);
}
答案 0 :(得分:1)
在pubspec.yaml中检查“标签”。
应该在“ flutter:”的一级标签中,即与“ uses-material-design:true”说的相同级别
undefined
否
success: function (encoded, status, xhr, $form) {
decoded = JSON.parse(encoded)
if (decoded.status === 'success') {