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Ekhlass
/
flutter_constraints

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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(