flutter_canteen/lib/main.dart

import 'dart:io';

import 'package:canteen/pages/home_page.dart';
import 'package:flutter/material.dart';
import 'package:canteen/model/themes.dart';
import 'package:flutter/services.dart';

void main() {
  WidgetsFlutterBinding.ensureInitialized();
  // 竖屏
  SystemChrome.setPreferredOrientations([
    DeviceOrientation.portraitUp,
    DeviceOrientation.portraitDown,
  ]);
  //设置Android头部的导航栏透明
  if (Platform.isAndroid) {
    SystemChrome.setSystemUIOverlayStyle(
        const SystemUiOverlayStyle(statusBarColor: Colors.transparent));
  }
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: '食堂App',
      debugShowCheckedModeBanner: false,
      theme: Themes.defaultTheme,
      home: HomePage(),
    );
  }
}