Flutter -- iOS -- Container

 1 import ‘package:flutter/cupertino.dart‘;
 2 import ‘package:flutter/material.dart‘;
 3 
 4 void main() =>runApp(
 5   new MaterialApp(
 6     title: ‘Container布局容器示例‘,
 7     home: new LayoutDemo(),
 8   )
 9 );
10 
11 class LayoutDemo extends StatelessWidget{
12   @override
13   Widget build(BuildContext context) {
14     // TODO: implement build
15     Widget container = new Container(
16       decoration: new BoxDecoration(
17         color: Colors.grey,
18       ),
19       child: new Column(
20         children: <Widget>[
21           new Row(
22             children: <Widget>[
23               new Expanded(
24                 child: new Container(
25                   width: 150.0,
26                   height: 150,
27                   decoration: new BoxDecoration(
28                     border: new Border.all(width: 10.0,color: Colors.blueGrey),
29                     borderRadius: const BorderRadius.all(const Radius.circular(8.0)),
30                   ),
31                   margin: const EdgeInsets.all(4.0),
32                   child: new Image.asset(‘images/750-1334-1.png‘),
33                 ),
34               ),
35               new Expanded(
36                   child: new Container(
37                     width: 150.0,
38                     height: 150.0,
39                     decoration: new BoxDecoration(
40                       border: new Border.all(width: 10.0,color: Colors.blueGrey),
41                       borderRadius: const BorderRadius.all(const Radius.circular(8.0)),
42                     ),
43                     margin: const EdgeInsets.all(4.0),
44                     child: new Image.asset(‘images/750-1334-2.png‘),
45                   ),
46               ),
47             ],
48           ),
49           new Row(
50             children: <Widget>[
51               new Expanded(
52                 child: new Container(
53                   width: 150,
54                   height: 150,
55                   decoration: new BoxDecoration(
56                     border: new Border.all(width: 10.0,color: Colors.blueGrey),
57                     borderRadius: const BorderRadius.all(const Radius.circular(8.0)),
58                   ),
59                   margin: const EdgeInsets.all(4.0),
60                   child: new Image.asset(‘images/750-1334-3.png‘),
61                 ),
62               ),
63               new Expanded(
64                 child: new Container(
65                   width: 150,
66                   height: 150,
67                   decoration: new BoxDecoration(
68                     border: new Border.all(width: 10.0,color: Colors.blueGrey),
69                     borderRadius: const BorderRadius.all(const Radius.circular(8.0)),
70                   ),
71                   margin: const EdgeInsets.all(4.0),
72                   child: new Image.asset(‘images/750-1334-4.png‘),
73                 ),
74               ),
75             ],
76           ),
77         ],
78       ),
79     );
80     return new Scaffold(
81       appBar: new AppBar(
82         title: new Text(‘appBar显示‘),
83       ),
84       body: container,
85     );
86   }
87 }