​
Install

Add the package: 
dependencies:
  restart_app: ^1.8.3
Then fetch dependencies: 
flutter pub get

​
Restart the app

Import the package and call Restart.restartApp(): 
import 'package:restart_app/restart_app.dart';

await Restart.restartApp();
For production flows, keep the returned result and handle failures: 
final result = await Restart.restartApp();

if (!result.success) {
  // Show or log result.code and result.message.
}
Restart.restartApp() returns a RestartResult with success, the resolved mode, and platform error details when the restart cannot be started.

​
Customize behavior

Default behavior works for normal app restart flows. Pass options only when your app needs a specific platform behavior. 
await Restart.restartApp(
  mode: RestartMode.platformDefault,
  webOrigin: '#/home',
  forceKill: false,
  notificationTitle: 'Restart',
  notificationBody: 'Tap to reopen the app.',
);

​
Check capabilities

Use Restart.restartCapability() when your UI should adapt to the current platform. 
final capability = await Restart.restartCapability();

if (capability.flutterEngineRestart) {
  await Restart.restartApp(mode: RestartMode.flutterEngine);
}