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flutter Dismissible 可以在拖动时隐藏的widget
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import 'package:flutter/material.dart';
class DismissedAppPage extends StatefulWidget {
@override
State<StatefulWidget> createState() {
return new _DismissedAppPageState();
}
}
class _DismissedAppPageState extends State<DismissedAppPage> {
List<String> list = [
'A',
'B',
'C',
'D',
'E',
'F',
'G',
'H',
'I',
'J',
'K',
'L'
];
@override
Widget build(BuildContext context) {
// TODO: implement build
return new Scaffold(
appBar: new AppBar(
title: new Text('Dismissed 学习'),
centerTitle: true,
),
body: new ListView.builder(
itemCount: list.length,
itemBuilder: (context, index) {
final String curItem = list[index];
return new Dismissible(
key: new Key(curItem),
direction: DismissDirection.endToStart,
onDismissed: (direction) {
list.removeAt(index);
print("$curItem 被划走了");
final snackBar = new SnackBar(content: new Text("$curItem"));
Scaffold.of(context).showSnackBar(snackBar);
},
background: new Container(
child: new Center(
child: new Text('即将被删除'),
),
color: Colors.red),
child: new ListTile(
title: new Text(curItem),
));
}),
);
}
}
class DismissedPage extends StatelessWidget {
@override
Widget build(BuildContext context) {
// TODO: implement build
return new Scaffold(
body: new DismissedAppPage(),
);
}
}
