flash 3.1.1 
flash: ^3.1.1 copied to clipboard
A highly customizable, powerful and easy-to-use alerting library for Flutter.
import 'dart:async';
import 'package:device_preview/device_preview.dart';
import 'package:example/clear_focus.dart';
import 'package:flash/flash.dart';
import 'package:flash/flash_helper.dart';
import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
void main() => runApp(
DevicePreview(
enabled: kIsWeb,
builder: (context) => App(),
),
);
class App extends StatefulWidget {
// This widget is the root of your application.
@override
State<StatefulWidget> createState() {
return _AppState();
}
}
class _AppState extends State<App> {
final navigatorKey = GlobalKey<NavigatorState>();
@override
Widget build(BuildContext context) {
return MaterialApp(
navigatorKey: navigatorKey,
builder: (context, _) {
var child = _!;
child = DevicePreview.appBuilder(context, _);
// Wrap with toast.
child = Toast(child: child, navigatorKey: navigatorKey);
return child;
},
locale: DevicePreview.locale(context),
title: 'Flash Demo',
theme: ThemeData.light().copyWith(
materialTapTargetSize: MaterialTapTargetSize.padded,
extensions: [FlashToastTheme(), FlashBarTheme()],
),
darkTheme: ThemeData.dark(),
themeMode: ThemeMode.light,
home: HomePage(title: 'Flash Demo Home Page'),
);
}
}
class HomePage extends StatefulWidget {
HomePage({Key? key, required this.title}) : super(key: key);
final String title;
@override
_HomePageState createState() => _HomePageState();
}
class _HomePageState extends State<HomePage> {
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(widget.title),
),
body: Container(
padding: const EdgeInsets.all(16.0),
child: Center(
child: Text(
'⚡️A highly customizable, powerful and easy-to-use alerting library for Flutter.',
style: TextStyle(fontSize: 18.0, wordSpacing: 5.0),
textAlign: TextAlign.center,
),
),
),
floatingActionButton: FloatingActionButton(
onPressed: () {
Navigator.of(context).push(MaterialPageRoute(builder: (context) {
return Overlay(
initialEntries: [
OverlayEntry(builder: (context) {
return FlashPage();
}),
],
);
}));
},
child: Icon(Icons.navigate_next),
),
);
}
}
class FlashPage extends StatefulWidget {
@override
_FlashPageState createState() => _FlashPageState();
}
class _FlashPageState extends State<FlashPage> {
GlobalKey<ScaffoldState> _key = GlobalKey<ScaffoldState>();
@override
Widget build(BuildContext context) {
return Scaffold(
key: _key,
appBar: AppBar(
title: Text('Flash Demo'),
actions: <Widget>[
IconButton(
icon: Icon(Icons.info_outline),
onPressed: () {
showDialog(
context: context,
builder: (_) {
return AlertDialog(
title: Text('Flash'),
content:
Text('⚡️A highly customizable, powerful and easy-to-use alerting library for Flutter.'),
actions: <Widget>[
TextButton(
onPressed: () => Navigator.pop(context),
child: Text('YES'),
),
TextButton(
onPressed: () => Navigator.pop(context),
child: Text('NO'),
),
],
);
});
})
],
),
body: ClearFocus(
child: Column(
children: <Widget>[
TextField(
decoration: InputDecoration(
hintText: 'Test FocusScopeNode',
contentPadding: const EdgeInsets.symmetric(horizontal: 16.0),
),
),
Expanded(
child: ListView(
padding: const EdgeInsets.all(16.0),
physics: AlwaysScrollableScrollPhysics(),
children: [
Wrap(
spacing: 8.0,
crossAxisAlignment: WrapCrossAlignment.center,
alignment: WrapAlignment.start,
runAlignment: WrapAlignment.center,
children: <Widget>[
Row(children: <Widget>[Text('Flash Toast')]),
ElevatedButton(
onPressed: () => context.showToast(Text('message (Queue)')),
child: Text('Toast (Queue)'),
),
ElevatedButton(
onPressed: () => context.showToast(
Text('message'),
shape: StadiumBorder(),
queue: false,
alignment: Alignment(0.0, -0.3),
),
child: Text('Toast'),
),
Row(children: <Widget>[Text('Flash Bar')]),
ElevatedButton(
onPressed: () => context.showFlash<bool>(
builder: (context, controller) => FlashBar(
controller: controller,
indicatorColor: Colors.red,
icon: Icon(Icons.tips_and_updates_outlined),
title: Text('Flash Title'),
content: Text('This is basic flash.'),
actions: [
TextButton(onPressed: controller.dismiss, child: Text('Cancel')),
TextButton(onPressed: () => controller.dismiss(true), child: Text('Ok'))
],
),
),
child: Text('Basics'),
),
ElevatedButton(
onPressed: () => context.showFlash<bool>(
barrierDismissible: true,
duration: const Duration(seconds: 3),
builder: (context, controller) => FlashBar(
controller: controller,
forwardAnimationCurve: Curves.easeInCirc,
reverseAnimationCurve: Curves.bounceIn,
position: FlashPosition.top,
indicatorColor: Colors.red,
icon: Icon(Icons.tips_and_updates_outlined),
title: Text('Flash Title'),
content: Text('This is basic flash.'),
actions: [
TextButton(onPressed: controller.dismiss, child: Text('Cancel')),
TextButton(onPressed: () => controller.dismiss(true), child: Text('Ok'))
],
),
),
child: Text('Duration | Top | Dismissible'),
),
ElevatedButton(
onPressed: () => context.showFlash<bool>(
barrierColor: Colors.black54,
barrierBlur: 16,
barrierDismissible: true,
builder: (context, controller) => FlashBar(
controller: controller,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.vertical(top: Radius.circular(16)),
side: BorderSide(),
),
clipBehavior: Clip.hardEdge,
indicatorColor: Colors.blue,
icon: Icon(Icons.tips_and_updates_outlined),
title: Text('Flash Title'),
content: Text('This is basic flash.'),
actions: [
TextButton(onPressed: controller.dismiss, child: Text('Cancel')),
TextButton(onPressed: () => controller.dismiss(true), child: Text('Ok'))
],
),
),
child: Text('Bottom | Floating | Dismissible'),
),
ElevatedButton(
onPressed: () => context.showFlash<bool>(
builder: (context, controller) => FlashBar(
controller: controller,
behavior: FlashBehavior.floating,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.all(Radius.circular(16)),
side: BorderSide(
color: Colors.yellow,
strokeAlign: BorderSide.strokeAlignInside,
),
),
margin: const EdgeInsets.all(32.0),
clipBehavior: Clip.antiAlias,
indicatorColor: Colors.amber,
icon: Icon(Icons.tips_and_updates_outlined),
title: Text('Flash Title'),
content: Text('This is basic flash.'),
),
),
child: Text('Bottom | Fixed | Margin'),
),
ElevatedButton(
onPressed: () => context.showFlash<bool>(
persistent: false,
onRemoveFromRoute: () {
context.showToast(Text('Flash removed'));
},
builder: (context, controller) => FlashBar(
controller: controller,
behavior: FlashBehavior.floating,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.all(Radius.circular(16)),
side: BorderSide(
color: Colors.yellow,
strokeAlign: BorderSide.strokeAlignInside,
),
),
margin: const EdgeInsets.all(32.0),
clipBehavior: Clip.antiAlias,
indicatorColor: Colors.red,
icon: Icon(Icons.tips_and_updates_outlined),
title: Text('Flash Title'),
content: Text('This is basic flash.'),
),
),
child: Text('Bottom | Fixed | Nonpersistent'),
),
ElevatedButton(
onPressed: () {
final editController = TextEditingController();
context
.showFlash<String>(
persistent: false,
barrierColor: Colors.black54,
barrierDismissible: true,
builder: (context, controller) => FlashBar(
controller: controller,
clipBehavior: Clip.antiAlias,
indicatorColor: Colors.red,
icon: Icon(Icons.tips_and_updates_outlined),
title: Text('Flash Title'),
content: TextField(
controller: editController,
autofocus: true,
),
primaryAction: IconButton(
onPressed: () => controller.dismiss(editController.text),
icon: Icon(Icons.send),
),
),
)
.then((value) => value == null
? context.showErrorBar(
position: FlashPosition.top,
content: Text('Say nothing!'),
)
: context.showSuccessBar(
position: FlashPosition.top,
icon: const Icon(Icons.support_agent),
content: Text('Say: $value'),
));
},
child: Text('Bottom | Input | Nonpersistent'),
),
ElevatedButton(
onPressed: () => context.showInfoBar(content: Text('I am Info Bar!')),
child: Text('Flash Info Bar'),
),
ElevatedButton(
onPressed: () => context.showSuccessBar(content: Text('I am Success Bar!')),
child: Text('Flash Success Bar'),
),
ElevatedButton(
onPressed: () => context.showErrorBar(
content: Text('I am Error Bar!'),
primaryActionBuilder: (context, controller) {
return IconButton(
onPressed: controller.dismiss,
icon: Icon(Icons.undo),
);
},
),
child: Text('Flash Error Bar'),
),
Row(children: <Widget>[Text('Flash Dialog')]),
ElevatedButton(
onPressed: () => context.showFlash(
barrierColor: Colors.black54,
barrierDismissible: true,
builder: (context, controller) => FadeTransition(
opacity: controller.controller,
child: AlertDialog(
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.all(Radius.circular(16)),
side: BorderSide(),
),
contentPadding: EdgeInsets.only(left: 24.0, top: 16.0, right: 24.0, bottom: 16.0),
title: Text('Title'),
content: Text('Content'),
actions: [
TextButton(
onPressed: controller.dismiss,
child: Text('Ok'),
),
],
),
),
),
child: Text('Alert Dialog'),
),
Row(children: <Widget>[Text('Modal Flash')]),
ElevatedButton(
onPressed: () => context.showModalFlash(
barrierBlur: 16,
builder: (context, controller) => FlashBar(
controller: controller,
behavior: FlashBehavior.floating,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.all(Radius.circular(16)),
side: BorderSide(
color: Colors.yellow,
strokeAlign: BorderSide.strokeAlignInside,
),
),
margin: const EdgeInsets.all(32.0),
clipBehavior: Clip.antiAlias,
indicatorColor: Colors.amber,
icon: Icon(Icons.tips_and_updates_outlined),
title: Text('Flash Title'),
content: Text('This is basic flash.'),
),
),
child: Text('Bar | Bottom | Floating | Margin'),
),
ElevatedButton(
onPressed: () => context.showModalFlash(
builder: (context, controller) => RotationTransition(
turns: controller.controller.drive(CurveTween(curve: Curves.bounceInOut)),
child: FadeTransition(
opacity: controller.controller.drive(CurveTween(curve: Curves.fastOutSlowIn)),
child: Flash(
controller: controller,
dismissDirections: FlashDismissDirection.values,
slideAnimationCreator: (context, position, parent, curve, reverseCurve) {
return controller.controller.drive(Tween(begin: Offset(0.1, 0.1), end: Offset.zero));
},
child: AlertDialog(
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.all(Radius.circular(16)),
side: BorderSide(),
),
contentPadding: EdgeInsets.only(left: 24.0, top: 16.0, right: 24.0, bottom: 16.0),
title: Text('Title'),
content: Text('Content'),
actions: [
TextButton(
onPressed: controller.dismiss,
child: Text('Ok'),
),
],
),
),
),
),
),
child: Text('Alert Dialog'),
),
ElevatedButton(
onPressed: () {
Future.delayed(Duration(seconds: 5)).then((_) => Navigator.of(context).pop());
context.showBlockDialog();
},
child: Text('Block Dialog'),
),
Row(children: <Widget>[Text('Flash Custom')]),
ElevatedButton(
onPressed: () => context.showFlash(
builder: (context, controller) {
return Align(
alignment: Alignment.bottomCenter,
child: Flash(
controller: controller,
position: FlashPosition.bottom,
dismissDirections: [FlashDismissDirection.startToEnd],
child: SizedBox(
width: double.infinity,
child: Material(
elevation: 24,
child: SafeArea(
top: false,
child: Padding(
padding: EdgeInsets.all(16),
child: Text('A custom with Flash'),
),
),
),
),
),
);
},
),
child: Text('Custom Flash Bar'),
),
ElevatedButton(
onPressed: () => context.showModalFlash(
builder: (context, controller) {
return Align(
alignment: AlignmentDirectional.centerStart,
child: FadeTransition(
opacity: controller.controller.drive(Tween(begin: 0.5, end: 1.0)),
child: Flash(
controller: controller,
slideAnimationCreator: (context, position, parent, curve, reverseCurve) {
return CurvedAnimation(parent: parent, curve: curve, reverseCurve: reverseCurve)
.drive(Tween<Offset>(
begin: Offset(
Directionality.of(context) == TextDirection.ltr ? -1.0 : 1.0,
// -1.0,
0.0,
),
end: Offset.zero));
},
dismissDirections: [FlashDismissDirection.endToStart],
child: FractionallySizedBox(
widthFactor: 0.8,
child: Material(
elevation: 24,
clipBehavior: Clip.antiAlias,
shape: const RoundedRectangleBorder(
borderRadius: BorderRadius.all(Radius.circular(8)),
),
child: SafeArea(
child: Column(
children: [
Padding(
padding: EdgeInsets.all(16),
child: Text('A custom with Flash'),
),
],
),
),
),
),
),
),
);
},
),
child: Text('Custom Flash Drawer'),
),
],
),
],
),
),
],
),
),
floatingActionButton: FloatingActionButton(
onPressed: () => Navigator.of(context).push(MaterialPageRoute(builder: (context) => NextPage())),
child: Icon(Icons.navigate_next),
),
);
}
}
class NextPage extends StatelessWidget {
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(),
body: Container(color: Colors.blueGrey),
);
}
}Metadata
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Publisher
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Metadata
A highly customizable, powerful and easy-to-use alerting library for Flutter.
Repository (GitHub)
View/report issues
Documentation
License
Apache-2.0 (license)
