long_press_preview 0.0.7 long_press_preview: ^0.0.7 copied to clipboard
Long press and show draggable dialog of any widget. Draggable dialog and multi gesture callback provides. Drag up or Drag down close dialog.
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:long_press_preview/long_press_preview.dart';
import './card.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 Demo',
theme: ThemeData(
// This is the theme of your application.
//
// Try running your application with "flutter run". You'll see the
// application has a blue toolbar. Then, without quitting the app, try
// changing the primarySwatch below to Colors.green and then invoke
// "hot reload" (press "r" in the console where you ran "flutter run",
// or simply save your changes to "hot reload" in a Flutter IDE).
// Notice that the counter didn't reset back to zero; the application
// is not restarted.
primarySwatch: Colors.blue,
// This makes the visual density adapt to the platform that you run
// the app on. For desktop platforms, the controls will be smaller and
// closer together (more dense) than on mobile platforms.
visualDensity: VisualDensity.adaptivePlatformDensity,
),
home: MyHomePage(title: 'Flutter Demo Home Page'),
);
}
}
class MyHomePage extends StatefulWidget {
MyHomePage({Key key, this.title}) : super(key: key);
// This widget is the home page of your application. It is stateful, meaning
// that it has a State object (defined below) that contains fields that affect
// how it looks.
// This class is the configuration for the state. It holds the values (in this
// case the title) provided by the parent (in this case the App widget) and
// used by the build method of the State. Fields in a Widget subclass are
// always marked "final".
final String title;
@override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
void onCreateDialog() async {}
void onFingerCallBack(LongPressPreviewFingerEvent event, Function dispose) {
switch (event) {
// dialog create event callback
case LongPressPreviewFingerEvent.long_press_start:
break;
// finger drag to top callback event
case LongPressPreviewFingerEvent.long_press_drag_top:
dispose();
Navigator.push(context, MaterialPageRoute(builder: (context) => SecondScreen()));
break;
// finger leave screen callback
case LongPressPreviewFingerEvent.long_press_end:
break;
// finger drag to bottom and override threshold
case LongPressPreviewFingerEvent.long_press_cancel:
break;
default:
}
}
@override
Widget build(BuildContext context) {
// This method is rerun every time setState is called, for instance as done
// by the _incrementCounter method above.
//
// The Flutter framework has been optimized to make rerunning build methods
// fast, so that you can just rebuild anything that needs updating rather
// than having to individually change instances of widgets.
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(widget.title),
),
body: Builder(builder: (BuildContext context) {
return GridView.builder(
gridDelegate: SliverGridDelegateWithFixedCrossAxisCount(
crossAxisCount: 3, //横轴三个子widget
childAspectRatio: 0.6 //宽高比为1时,子widget
),
itemCount: 24,
itemBuilder: (BuildContext context, int idx) {
return Container(
child: LongPressPreview(
onTap: () => Navigator.push(context, MaterialPageRoute(builder: (context) => SecondScreen())),
onFingerCallBack: onFingerCallBack,
dialogSize: const Size(300, 500),
child: MediaCardVertical(imageUrl: 'assets/example.jpg', title: 'BiliBili 干杯🍻', scope: 3),
content: Card(
child: Column(
mainAxisSize: MainAxisSize.max,
children: <Widget>[
AspectRatio(
aspectRatio: 158 / 90,
child: ClipRRect(
borderRadius: BorderRadius.circular(6),
child: Image.asset('assets/unnamed1.jpg'),
)),
SizedBox(height: 16),
const ListTile(
leading: Icon(Icons.album),
title: Text('The Enchanted Nightingale'),
subtitle: Text('Music by Julie Gable. Lyrics by Sidney Stein.'),
),
Row(
mainAxisAlignment: MainAxisAlignment.end,
children: <Widget>[
TextButton(
child: const Text('BUY TICKETS'),
onPressed: () {/* ... */},
),
const SizedBox(width: 8),
TextButton(
child: const Text('LISTEN'),
onPressed: () {/* ... */},
),
const SizedBox(width: 8),
],
),
],
),
)),
);
});
}), // This trailing comma makes auto-formatting nicer for build methods.
);
}
}
class SecondScreen extends StatelessWidget {
@override
Widget build(BuildContext context) {
return new Scaffold(
appBar: new AppBar(
title: new Text("Second Screen"),
),
body: new Center(
child: new RaisedButton(
onPressed: () {
// Navigate back to first screen when tapped!
},
child: new Text('Go back!'),
),
),
);
}
}