Flutter: How to set and lock screen orientation on-demand

Question

On one of my flutter pages, I need the screen to set to landscape mode and lock it so it can\'t rotate into portrait mode, but only on the one page. So need a way to enable

Answer 1

void main() {
  WidgetsFlutterBinding.ensureInitialized();
  SystemChrome.setPreferredOrientations([DeviceOrientation.portraitUp, DeviceOrientation.portraitDown])
    .then((_) {
      runApp(new MyApp());
    });
}