Android 平台架构
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@override
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: Colors.black,
body: Container(
color: Colors.lime,
alignment: Alignment.center,
child: Container(
alignment: Alignment.center,
child: Container(
height: 200,
alignment: Alignment.center,
child: new Row(
children: [
Container(
child: new Text(