为什么我无法在我的项目中加载背景图片? 无法加载资源:lib/assets/background.jpg
import 'package:flutter/material.dart';
Widget testWidget = new MediaQuery(
data: new MediaQueryData(), child: new MaterialApp(home: new MyApp()));
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return Scaffold(
body: Container(
decoration: BoxDecoration(
image: DecorationImage(
image: AssetImage("lib/assets/background.jpg"),
fit: BoxFit.cover,
),
),
child: null /* add child content here */,
),
);
}
}
文件树
pubspec.yaml
assets:
- lib/assets/background.jpg
答案 0 :(得分:3)
答案 1 :(得分:0)
我会建议删除此代码:
Widget testWidget = new MediaQuery(
data: new MediaQueryData(), child: new MaterialApp(home: new MyApp()));
将assets文件夹移动到项目根目录并更新pubspec.yaml中的路径
assets:
- /assets/
更改 MyApp
以使用 MaterialApp 和 HomePage
:
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
home: HomePage(),
);
}
}
然后将背景图片代码移动到HomePage
内的Scaffold
:
Scaffold(
body: Container(
decoration: BoxDecoration(
image: DecorationImage(
image: AssetImage('assets/background.jpg'),
fit: BoxFit.cover,
),
),
),
),