main.dart
import 'package:flutter/material.dart';
void main() {runApp(const MyApp());}
class MyApp extends StatelessWidget {
const MyApp({Key? key}) : super(key: key);
@override
Widget build(BuildContext context) {
return MaterialApp(
theme: ThemeData(primarySwatch: Colors.grey),
home: const MyHomePage()
);
}
}
class MyHomePage extends StatefulWidget {
const MyHomePage({Key? key}) : super(key: key);
@override
State<MyHomePage> createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
bool _index0Expanded = false;
bool _index1Expanded = false;
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: const Text("Flutter - ExpansionPanelList")
),
body: bodyContent()
);
}
bodyContent() {
return SingleChildScrollView(
child: ExpansionPanelList(
animationDuration: const Duration(milliseconds: 600),
children: [
ExpansionPanel(
headerBuilder: (context, isExpanded) {
return const ListTile(title: Text("Green"));
},
body:ListTile(
title: const Text("I am green color."),
tileColor: Colors.green.shade200,
contentPadding: const EdgeInsets.all(32),
),
isExpanded: _index0Expanded,
canTapOnHeader: true,
),
ExpansionPanel(
headerBuilder: (context, isExpanded) {
return const ListTile(title: Text("Red"));
},
body:ListTile(
title: const Text("I am red color."),
tileColor: Colors.red.shade200,
contentPadding: const EdgeInsets.all(32),
),
isExpanded: _index1Expanded,
canTapOnHeader: true,
),
],
dividerColor: Colors.grey,
expansionCallback: (panelIndex, isExpanded) {
setState(() {
if(panelIndex == 0){ _index0Expanded = !_index0Expanded;}
if(panelIndex == 1){_index1Expanded = !_index1Expanded;}
});
},
),
) ;
}
}
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