Flutter constants File with Provider package - flutter

Question

I'm having trouble figuring out the best way to set up some constants (mainly strings). Currently I'm using a constants.dart file that just has the const variables defined in there and import it whenever it's needed. No class or anything, just a blank dart file. This works, however, I recently implemented localization using the Flutter Intl plugin in Android Studio. I got everything to work and can do something like this S.of(context).settings and it gets the translation from the correct file. My problem comes with some constant list of strings I have in my constants.dart file. I use them in many places for option selects. They look like this:
const playType = [
'RP/Story Focused',
'Battle/Combat Focused',
'Puzzles and Challenges',
'Exploration/Travel',
];
const length = [
'One Shot',
'2-5 Sessions',
'5-10 Sessions',
'On-going Campaign',
];
I cant change the the strings to the Intl reference because there is not context to be passed. Not sure how to set up a class that is loaded but not sure how to set that up and use the Provider package to serve it up.
EDIT:
heres the Constants file. Calling this with the provider is fine. The issue comes when I need to use the localization on the strings in the lists
import 'package:scryer/generated/l10n.dart';
class Constants {
Constants._();
static final instance = Constants._();
static List<String> playType = [
S.of(context).rpstoryFocused,//need a reference to a context
'Battle/Combat Focused',
'Puzzles and Challenges',
'Exploration/Travel',
];
static const length = [
'One Shot',
'2-5 Sessions',
'5-10 Sessions',
'On-going Campaign',
];
}
Heres how I call the constants on the actual page. Its a button that on press goes to a new screen that is either a multiselect checkbox list or single select radiobutton list. I pass the constants as an argument for the list
MaterialPageRoute(builder: (context) {
return MultiSelectScreen(
args: MultiSelectArguments(
label: S.of(context).selectPreferredPlayStyle,
options: playType, //this is the constants list reference
selections:
profile.playType,
),
);
})
The easy solution is to not use a constant and just create the lists in these spots, only used like twice i think, but better practice is to pull it out since its being used multiple times

Answer 1

you can try.
class Constants {
final BuildContext context;
Constants(#required this.context);
// static final instance = Constants._(); // to make class a singleton
static const playType = [
'RP/Story Focused',
'Battle/Combat Focused',
'Puzzles and Challenges',
'Exploration/Travel',
];
static const length = [
'One Shot',
'2-5 Sessions',
'5-10 Sessions',
'On-going Campaign',
];
}
Then, at the root of your project you should provide this class like;
void main() {
/** WidgetsFlutterBinding.ensureInitialized() is required in Flutter v1.9.4+ before using any plugins if the code is executed before runApp. */
WidgetsFlutterBinding.ensureInitialized();
runApp( Provider(
create: (context) => Constants(context),
child: MyApp(),
),
);
}
You will be able to access these constants in any BuildContext anywhere down the widget tree as follows;
final Contants constants = Provider<Constants>.of(context);
you get the length constant like; constants.length