flutter展示底部弹窗
a.gif
import 'package:flutter/material.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
// This widget is the root of your application.
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'flutter之Hero动画',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: MyHomePage(title: 'Flutter Demo Home Page'),
);
}
}
class MyHomePage extends StatefulWidget {
MyHomePage({Key key, this.title}) : super(key: key);
final String title;
@override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
void showPhoto(BuildContext context, Widget image) {
Navigator.push(context,
MaterialPageRoute<void>(builder: (BuildContext context) {
return GestureDetector(
child: SizedBox.expand(
child: Hero(
tag: image,
child: image,
),
),
onTap: () {
Navigator.maybePop(context);
},
);
}));
}
List<Widget> _list = <Widget>[
ClipRRect(
child: Image.asset(
'images/hanyun.jpg',
fit: BoxFit.cover,
),
borderRadius: BorderRadius.circular(8),
),
ClipRRect(
child: Image.asset(
'images/hanyun.jpg',
fit: BoxFit.cover,
),
borderRadius: BorderRadius.circular(8),
),
ClipRRect(
child: Image.asset(
'images/hanyun.jpg',
fit: BoxFit.cover,
),
borderRadius: BorderRadius.circular(8),
),
ClipRRect(
child: Image.asset(
'images/hanyun.jpg',
fit: BoxFit.cover,
),
borderRadius: BorderRadius.circular(8),
),
ClipRRect(
child: Image.asset(
'images/hanyun.jpg',
fit: BoxFit.cover,
),
borderRadius: BorderRadius.circular(8),
),
ClipRRect(
child: Image.asset(
'images/hanyun.jpg',
fit: BoxFit.cover,
),
borderRadius: BorderRadius.circular(8),
),
ClipRRect(
child: Image.asset(
'images/hanyun.jpg',
fit: BoxFit.cover,
),
borderRadius: BorderRadius.circular(8),
),
ClipRRect(
child: Image.asset(
'images/hanyun.jpg',
fit: BoxFit.cover,
),
borderRadius: BorderRadius.circular(8),
),
ClipRRect(
child: Image.asset(
'images/hanyun.jpg',
fit: BoxFit.cover,
),
borderRadius: BorderRadius.circular(8),
),
];
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
// Here we take the value from the MyHomePage object that was created by
// the App.build method, and use it to set our appbar title.
title: Text('flutter展示底部弹窗'),
centerTitle: true,
),
body: Center(
child: RaisedButton(
child: const Text('展示底部弹窗'),
onPressed: () {
showModalBottomSheet<void>(
context: context,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.only(
topLeft: Radius.circular(20),
topRight: Radius.circular(20),
),
),
builder: (BuildContext context) {
return Container(
child: GridView.count(
crossAxisCount: 3,
mainAxisSpacing: 4.0,
crossAxisSpacing: 4.0,
padding: const EdgeInsets.all(4.0),
children: _list.map(
(Widget img) {
return GestureDetector(
onTap: () {
showPhoto(context, img);
},
child: Hero(
tag: img,
child: img,
),
);
},
).toList(),
),
);
});
},
),
));
}
}
修改变边框形状,增加左上角,右上角圆角
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.only(
topLeft: Radius.circular(20),
topRight: Radius.circular(20),
),
),
网友评论