kprovider/lib/controller/language_change_controller.dart

import 'package:flutter/material.dart';
import 'package:shared_preferences/shared_preferences.dart';

class LanguageChangeController with ChangeNotifier {
  Locale? _appLocale;
  Locale? get appLocale => _appLocale;

  Future<void> changeLanguage(Locale type) async {
    SharedPreferences sp = await SharedPreferences.getInstance();
    //print(type);
    if (type == const Locale('en')) {
      _appLocale = type;
      await sp.setString('locale', 'en');
    }
    if (type == const Locale('ml')) {
      _appLocale = type;
      await sp.setString('locale', 'ml');
    }
    notifyListeners();
  }
}