xxxhdpi und co

xxxhdpi.dart

import 'package:flutter/material.dart';

void main() => runApp(Tut09());

class Tut09 extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
        scaffoldBackgroundColor: Colors.white,
      ),
      home: Tut09Demo(title: 'Tut09 Demo'),
    );
  }
}

class Tut09Demo extends StatelessWidget {
  Tut09Demo({Key key,this.title}):super(key:key);
  final String title;
  @override
  Widget build(BuildContext context) {
    var assetsImage = new AssetImage("bilder/london.png");
    var image =new Image(image: assetsImage,height: 48.0,width: 48.0);
    return Scaffold(
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            Container(
              decoration: BoxDecoration(
                color: Colors.white,
                boxShadow: <BoxShadow>[
          BoxShadow (
            color: const Color(0xcc000000),
            offset: Offset(0.0, 2.0),
            blurRadius: 4.0,
          ),
        ],
                borderRadius:BorderRadius.all(const Radius.circular(24.0)),
              ),
              padding: EdgeInsets.all(10.0),
              margin: EdgeInsets.all(10.0),
              child: Card(
                elevation: 5.0,
                child: Column(
                  children: <Widget>[
                  image,
                  ],
                ),
              ),
            )
          ],
        ),
      ),
      
    );
  }
}