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| import 'package:flutter/material.dart';
class DismissibleDemoPage extends StatefulWidget { @override State<StatefulWidget> createState() => new _DismissibleDemoPagePageState(); }
class _DismissibleDemoPagePageState extends State<DismissibleDemoPage> { final items = List<String>.generate(10, (i) => "Item $i");
@override void initState() { super.initState(); }
@override Widget build(BuildContext context) { final title = 'Dismissing Items'; return MaterialApp( title: title, theme: ThemeData( primarySwatch: Colors.blue, ), home: Scaffold( appBar: AppBar( title: Text(title), ), body: Builder(builder: (BuildContext context) { return Center( child: Stack( children: _buildCards(context), )); }), ), ); }
List<Widget> _buildCards(BuildContext context) { var cards = List<Widget>(); for (String item in items) { cards.add(Dismissible( key: Key(item), background: Container( alignment: Alignment.centerRight, padding: EdgeInsets.only(right: 16.0), color: Colors.red, child: Row( mainAxisAlignment: MainAxisAlignment.end, children: <Widget>[ Text('Dismiss', style: Theme .of(context) .primaryTextTheme .subhead .copyWith(color: Colors.white)), Icon( Icons.delete, color: Colors.white, ), ], ), ), direction: DismissDirection.endToStart, child: Container( alignment: Alignment.centerLeft, color: Colors.blue, height: 50.0, width: 200.0, child: Text(item), ), onDismissed: (direction) { setState(() { items.remove(item); }); Scaffold .of(context) .showSnackBar(SnackBar(content: Text("$item dismissed"))); })); }
return cards; } }
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