diplomatic-quarter/lib/pages/conference/widgets/platform_widget.dart

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

abstract class PlatformWidget extends StatelessWidget {
  Widget buildCupertinoWidget(BuildContext context);

  Widget buildMaterialWidget(BuildContext context);

  @override
  Widget build(BuildContext context) {
    if (Platform.isIOS) {
      return buildCupertinoWidget(context);
    }
    return buildMaterialWidget(context);
  }
}