What's the best practice to keep all the constants in Flutter?

static dart flutter constants
Manoj Perumarath picture Manoj Perumarath · Jan 7, 2019 · Viewed 27.6k times · Source

What's the best programming practice to

create a constant class in Flutter

to keep all the application constants for easy reference. I know that there is const keyword in Dart for creating constant fields, but is it okay to use static along with const, or will it create memory issues during run-time.

class Constants {
static const String SUCCESS_MESSAGE=" You will be contacted by us very soon.";
}

Answer

Anirudh picture Anirudh · Aug 2, 2019

My preferred solution is to make my own Dart library.

Make a new dart file named constants.dart, and add the following code:

library constants;

const String SUCCESS_MESSAGE=" You will be contacted by us very soon.";

Then add the following import statement to the top of any dart file which needs access to the constants:

import 'constants.dart' as Constants;

You may need to run flutter pub get for the file to be recognized. And now you can easily access your constants with this syntax:

String a = Constants.SUCCESS_MESSAGE;

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