empeche la rotation dun screen en flutter
import 'package:flutter/cupertino.dart';
import 'package:flutter/services.dart';
/// Forces portrait-only mode application-wide
/// Use this Mixin on the main app widget i.e. app.dart
/// Flutter's 'App' has to extend Stateless widget.
///
/// Call `super.build(context)` in the main build() method
/// to enable portrait only mode
mixin PortraitModeMixin on StatelessWidget {
@override
Widget build(BuildContext context) {
_portraitModeOnly();
return null;
}
}
/// Forces portrait-only mode on a specific screen
/// Use this Mixin in the specific screen you want to
/// block to portrait only mode.
///
/// Call `super.build(context)` in the State's build() method
/// and `super.dispose();` in the State's dispose() method
mixin PortraitStatefulModeMixin<T extends StatefulWidget> on State<T> {
@override
Widget build(BuildContext context) {
_portraitModeOnly();
return null;
}
@override
void dispose() {
_enableRotation();
}
}
/// blocks rotation; sets orientation to: portrait
void _portraitModeOnly() {
SystemChrome.setPreferredOrientations([
DeviceOrientation.portraitUp,
DeviceOrientation.portraitDown,
]);
}
void _enableRotation() {
SystemChrome.setPreferredOrientations([
DeviceOrientation.portraitUp,
DeviceOrientation.portraitDown,
DeviceOrientation.landscapeLeft,
DeviceOrientation.landscapeRight,
]);
}