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Description:

device preview

Approximate how your app looks and performs on another device.

Main features #

Preview any device from any device
Change the device orientation
Dynamic system configuration (language, dark mode, text scaling factor, ...)
Freeform device with adjustable resolution and safe areas
Keep the application state
Plugin system (Screenshot, File explorer, ...)
Customizable plugins

Quickstart #
Add dependency to your pubspec file #
Since Device Preview is a simple Dart package, you have to declare it as any other dependency in your pubspec.yaml file.
dependencies:
device_preview: <latest version>
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Add DevicePreview #
Wrap your app's root widget in a DevicePreview and make sure to :

Set your app's useInheritedMediaQuery to true.
Set your app's builder to DevicePreview.appBuilder.
Set your app's locale to DevicePreview.locale(context).

Make sure to override the previous properties as described. If not defined, MediaQuery won't be simulated for the selected device.

import 'package:device_preview/device_preview.dart';

void main() => runApp(
DevicePreview(
enabled: !kReleaseMode,
builder: (context) => MyApp(), // Wrap your app
),
);

class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
useInheritedMediaQuery: true,
locale: DevicePreview.locale(context),
builder: DevicePreview.appBuilder,
theme: ThemeData.light(),
darkTheme: ThemeData.dark(),
home: const HomePage(),
);
}
}
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Documentation #
Open the website
Demo #
Open the demo
Limitations #
Think of Device Preview as a first-order approximation of how your app looks and feels on a mobile device. With Device Mode you don't actually run your code on a mobile device. You simulate the mobile user experience from your laptop, desktop or tablet.

There are some aspects of mobile devices that Device Preview will never be able to simulate. When in doubt, your best bet is to actually run your app on a real device.