text
stringlengths 0
197
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Example29(), |
]); |
} |
} |
abstract class Example extends StatelessWidget { |
const Example({super.key}); |
String get code; |
String get explanation; |
} |
class FlutterLayoutArticle extends StatefulWidget { |
const FlutterLayoutArticle( |
this.examples, { |
super.key, |
}); |
final List<Example> examples; |
@override |
State<FlutterLayoutArticle> createState() => _FlutterLayoutArticleState(); |
} |
class _FlutterLayoutArticleState extends State<FlutterLayoutArticle> { |
late int count; |
late Widget example; |
late String code; |
late String explanation; |
@override |
void initState() { |
count = 1; |
code = const Example1().code; |
explanation = const Example1().explanation; |
super.initState(); |
} |
@override |
void didUpdateWidget(FlutterLayoutArticle oldWidget) { |
super.didUpdateWidget(oldWidget); |
var example = widget.examples[count - 1]; |
code = example.code; |
explanation = example.explanation; |
} |
@override |
Widget build(BuildContext context) { |
return MaterialApp( |
debugShowCheckedModeBanner: false, |
title: 'Flutter Layout Article', |
home: SafeArea( |
child: Material( |
color: Colors.black, |
child: FittedBox( |
child: Container( |
width: 400, |
height: 670, |
color: const Color(0xFFCCCCCC), |
child: Column( |
crossAxisAlignment: CrossAxisAlignment.center, |
children: [ |
Expanded( |
child: ConstrainedBox( |
constraints: const BoxConstraints.tightFor( |
width: double.infinity, height: double.infinity), |
child: widget.examples[count - 1])), |
Container( |
height: 50, |
width: double.infinity, |
color: Colors.black, |
child: SingleChildScrollView( |
scrollDirection: Axis.horizontal, |
child: Row( |
mainAxisSize: MainAxisSize.min, |
children: [ |
for (int i = 0; i < widget.examples.length; i++) |
Container( |
width: 58, |
padding: const EdgeInsets.only(left: 4, right: 4), |
child: button(i + 1), |
), |
], |
), |
), |
), |
Container( |
height: 273, |
color: Colors.grey[50], |
child: Scrollbar( |
child: SingleChildScrollView( |
key: ValueKey(count), |
child: Padding( |
padding: const EdgeInsets.all(10), |
child: Column( |
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