这是另一个使用jpg作为背景图像的示例。它还将不透明度应用于图像。
import 'package:flutter/material.dart';void main() => runApp(new MyApp());class MyApp extends StatelessWidget { // This widget is the root of your application. @override Widget build(BuildContext context) { return new MaterialApp( title: 'Flutter Demo', theme: new ThemeData( primarySwatch: Colors.blue, ), home: new Scaffold( resizeToAvoidBottomPadding: false, appBar: new AppBar( title: new Text("test"), ), body: new Container( decoration: new BoxDecoration( image: new DecorationImage( colorFilter: new ColorFilter.mode(Colors.black.withOpacity(0.6), BlendMode.dstATop), image: new AssetImage("assets/images/keyboard.jpg"), fit: BoxFit.cover, ), ), ), ), ); }}
