Internationalization

main.dart

import 'package:flutter/material.dart';
import 'package:flutter_getx/my_controller.dart';
import 'package:flutter_getx/my_controller_binding.dart';
import 'package:flutter_getx/next_screen.dart';
import 'package:flutter_getx/student.dart';
import 'package:flutter_getx/unknown_route.dart';
import 'package:get/get.dart';
import 'Messages.dart';
import 'home.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {

  MyController myController=Get.put(MyController());
  @override
  Widget build(BuildContext context) {

    // TODO: implement build
    return GetMaterialApp(
      translations: Messages(), // your translations
      locale: Locale('en', 'US'), // default locale // to get device locale Get.deviceLocale
      fallbackLocale: Locale('en', 'US'), // fallback locale if wrong locale found
      title: "Internationalization",
      home: Scaffold(
        appBar: AppBar(title: Text("Internationalization")),
        body: Center(
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            crossAxisAlignment: CrossAxisAlignment.center,
            children: [
              Text('hello'.tr,style: TextStyle(fontSize: 25,color: Colors.purple),),
              RaisedButton(
                child: Text("Hindi"),
                onPressed: () {
                  myController.changeLanguage('hi','IN');

                },
              ),
              SizedBox(
                height: 16,
              ),
              RaisedButton(
                child: Text("French"),
                onPressed: () {
                  myController.changeLanguage('fr','FR');

                },
              ),
              SizedBox(
                height: 16,
              ),
              RaisedButton(
                child: Text("English"),
                onPressed: () {
                  myController.changeLanguage('en','US');

                },
              ),
            ],
          ),
        ),
      ),
    );
  }
}

messages.dart

import 'package:get/get.dart';

class Messages extends Translations {
  @override
  Map<String, Map<String, String>> get keys => {
    'en_US': {
      'hello': 'Hello',
    },
    'hi_IN': {
      'hello': 'नमस्कार',
    },
    'fr_FR': {
      'hello': 'Bonjour',
    }


  };
}

my_controller

import 'dart:ui';

import 'package:flutter_getx/student.dart';
import 'package:get/get.dart';
class MyController extends GetxController
{

  void changeLanguage(var param1,var param2)
  {
    var locale = Locale(param1, param2);
    Get.updateLocale(locale);
  }
}