swagger/lib/lang.dart

import 'package:flutter/material.dart';

class Lang extends StatefulWidget {
  const Lang({
    Key? key,
  }) : super(key: key);

  @override
  State<Lang> createState() => _LangState();
}

class _LangState extends State<Lang> {
  var selectedIndex = 0;

  // void _changeLang() {
  //   setState(() {
  //     if (selectedIndex == 0) {

  //     } else {

  //     }
  //   });
  // }

  @override
  Widget build(BuildContext context) {
    return Padding(
      padding: const EdgeInsets.all(8.0),
      child: Row(
        children: [
          Expanded(child: Container()),
          ElevatedButton(
            onPressed: () {
              print('EN');
            },
            style: ButtonStyle(
                foregroundColor: MaterialStateProperty.all<Color>(Colors.white),
                backgroundColor:
                    MaterialStateProperty.all<Color>(Colors.white70),
                shape: MaterialStateProperty.all<RoundedRectangleBorder>(
                    RoundedRectangleBorder(
                  borderRadius: BorderRadius.only(
                      topLeft: Radius.circular(20),
                      bottomLeft: Radius.circular(20)),
                ))),
            child: Text('EN'),
          ),
          ElevatedButton(
              onPressed: () {
                print('ID');
              },
              style: ButtonStyle(
                  foregroundColor:
                      MaterialStateProperty.all<Color>(Colors.white),
                  backgroundColor: MaterialStateProperty.all<Color>(Colors.red),
                  shape: MaterialStateProperty.all<RoundedRectangleBorder>(
                      RoundedRectangleBorder(
                    borderRadius: BorderRadius.only(
                        topRight: Radius.circular(20),
                        bottomRight: Radius.circular(20)),
                    side: BorderSide(color: Colors.red),
                  ))),
              child: Text('ID'))
        ],
      ),
    );
  }
}