我正在编写一个简单的优惠券应用程序，但是我在快速行动包方面挣扎。

我想做的是允许用户使用快速操作导航到屏幕。我创建了一个快速操作，并尝试导航到它，但是它不起作用。

当我单击快速操作时，它会将我重定向到应用程序的主屏幕。这不是我想要的。

import 'package:flutter/material.dart';
import './route_generator/route_generator.dart';
import 'package:quick_actions/quick_actions.dart';

class App extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    final quickactions quickactions = quickactions();
    quickactions.initialize((shortcutType) {
      if (shortcutType == 'cheeseburger') {
        Navigator.of(context).pushNamed('/generatedMailCouponScreen',arguments: 'assets/images/without_logo_coupon_cheeseburger.png');
      }
    });

    quickactions.setShortcutItems([
      ShortcutItem(
        type: 'cheeseburger',localizedTitle: 'Cheeseburger'
      )
    ]);

    return MaterialApp(
      initialRoute: '/',onGenerateRoute: RouteGenerator.generateRoute,theme: _theme()
    );
  }
}



ThemeData _theme() {
  const LargeTextSize = 26.0;
  const MediumTextSize = 20.0;
  const Body1TextSize = 16.0;
  const Body2TextSize = 12.0;

  const String FontNameDefault = 'Lato';

  return ThemeData(
    pageTransitionsTheme: PageTransitionsTheme(
      builders: {
        TargetPlatform.android: CupertinoPageTransitionsBuilder(),TargetPlatform.iOS: CupertinoPageTransitionsBuilder()
      }
    ),appBarTheme: AppBarTheme(
      color: Colors.blueGrey[700],textTheme: TextTheme(
        title: TextStyle(
          fontFamily: FontNameDefault,fontWeight: FontWeight.w300,fontSize: LargeTextSize
        )
      )
    ),tabBarTheme: TabBarTheme(
      labelStyle: TextStyle(
        fontFamily: FontNameDefault,fontSize: Body1TextSize,),unselectedLabelStyle: TextStyle(
        fontFamily: FontNameDefault,fontSize: Body1TextSize
      )
    ),indicatorColor: Colors.blueGrey[100],scaffoldBackgroundColor: Colors.blueGrey[600],textTheme: TextTheme(
      title: TextStyle(
        fontFamily: FontNameDefault,fontWeight: FontWeight.w600,fontSize: LargeTextSize,color: Colors.white
      ),body1: TextStyle(
        fontFamily: FontNameDefault,body2: TextStyle(
        fontFamily: FontNameDefault,fontSize: Body2TextSize,color: Colors.white
      )
    )
  );
}