MyApp Class for the 'Write Your First App' example.

MyApp.dart

import 'dart:io' show Platform;

import 'package:flutter/foundation.dart' show kIsWeb;

import 'package:flutter/cupertino.dart'
    show BuildContext, CupertinoApp, Key, StatelessWidget, Widget;

import 'package:flutter/material.dart' show MaterialApp;

import '../view/home/home.dart' show RandomWords;

class MyApp extends StatelessWidget {
  MyApp({
    this.key,
    this.android = false,
    this.iOS = false,
    this.switchUI = false,
  }) {
    _useMaterial = android;
    _useCupertino = iOS;
    _switchUI = switchUI;
  }
  final Key key;
  final bool android;
  final bool iOS;
  final bool switchUI;

  static bool _useMaterial;
  static bool _useCupertino;
  static bool _switchUI;

  @override
  Widget build(BuildContext context) {
    String title = 'Startup Name Generator';
    Widget home = RandomWords(key: key);
    if (useCupertino) {
      return CupertinoApp(
        title: title,
        home: home,
      );
    } else {
      return MaterialApp(
        title: title,
        home: home,
      );
    }
  }

  // Use Material UI when explicitly specified or even when running in iOS
  static bool get useMaterial =>
      kIsWeb ||
      (_useMaterial && !_useCupertino) ||
      (Platform.isAndroid && !_switchUI && !_useCupertino) ||
      (Platform.isIOS && _switchUI);

  // Use Cupertino UI when explicitly specified or even when running in Android
  static bool get useCupertino =>
      (_useCupertino && !_useMaterial) ||
      (Platform.isIOS && !_switchUI && !_useMaterial) ||
      (Platform.isAndroid && _switchUI);
}