import 'dart:io'; import 'package:flutter/foundation.dart' show kIsWeb; class PlatformUtils { PlatformUtils._internal(); static late bool _isAndroid; static late bool _isIos; static late bool _isWeb; static bool _isInstantiation = false; factory PlatformUtils() { if (!_isInstantiation) { _isAndroid = !kIsWeb && Platform.isAndroid; _isIos = !kIsWeb && Platform.isIOS; _isWeb = kIsWeb; _isInstantiation = true; } return _instance; } static late final PlatformUtils _instance = PlatformUtils._internal(); get isAndroid { return _isAndroid; } get isWeb { return _isWeb; } get isIOS { return _isIos; } }