Is there a way to rebuild the whole app include const widgets in flutter project? - widget

Question

In my Flutter project, to improve performance I created many const widgets, these widgets will not rebuild when their parent widgets rebuild.
But after the user changes language of the app, I need to rebuild the whole app to apply the text changes.
Is there a way to force the app to completely rebuild? Thanks, any advice would be appreciated.

Answer 1

'Inheritedwidget` is a solution to redraw any widget when the passed value change. Even stateless and const widgets.
For translations for example, flutter already provides an InheritedWidget, which you can bind to using Localizations.of method

Answer 2

yes there is a way to do it. you have to do full restart (now it's called Hot Restart) in the code, the way to do it is to put your App inside a static widget(why static? because it'll be created once just to avoid the null or anything like that). and when you want to do full restart, just perform a hot-reload in that widget, after that it'll restart your app. you can use it from everywhere
here is the way :
1- first in main.dart, put the your App inside the Restart widget :
import 'package:flutter/material.dart';
import 'home.dart';
void main() {
runApp(new HotRestartController(
child: new MyApp()
));
}
2- write your hotRestartController inside the file :
class HotRestartController extends StatefulWidget {
final Widget child;
HotRestartController({this.child});
static performHotRestart(BuildContext context) {
final _HotRestartControllerState state = context.ancestorStateOfType(const TypeMatcher<_HotRestartControllerState>());
state.performHotRestart();
}
#override
_HotRestartControllerState createState() => new _HotRestartControllerState();
}
class _HotRestartControllerState extends State<HotRestartController> {
Key key = new UniqueKey();
void performHotRestart() {
this.setState(() {
key = new UniqueKey();
});
}
#override
Widget build(BuildContext context) {
return new Container(
key: key,
child: widget.child,
);
}
}
3- anytime, anywhere you can import the main.dart, and call "performHotRestart" using:
HotRestartController.restartApp(context)
have fun !