如何在 Activity 而不是单独的类中实现 WorkManager 以便我可以使用 Activity 变量？

如何解决如何在 Activity 而不是单独的类中实现 WorkManager 以便我可以使用 Activity 变量？

我想在 WorkManager 中使用我的活动中的大部分变量，以便即使用户不在应用程序上也能够发送通知。如何在 WorkManager 中使用来自我的活动的变量来使用这些变量生成通知？

public class UploadTask extends Worker {
    public static Context context;
    public static final String FLIGHT_NUMBER="";
    public static  final String DEPARTURE_DATE = "";
    private FlightRepository repository;

    public UploadTask(@NonNull Context context,@NonNull WorkerParameters workerParams) {
        super(context,workerParams);

    }

    @NonNull
    @Override
    public Worker.Result doWork() {

String catering = getInputData().getString(CATERING);

String flightnumber = getInputData().getString(FLIGHT_NUMBER);
        String departuredate = getInputData().getString(DEPARTURE_DATE);
        System.out.println("flightnumber"+ flightnumber); //it prints departure date here,why?
        

        Flight flight = repository.getFlight(flightnumber,departuredate);

        String catering = flight.getCatering_start_time();

        createNotificationChannel();
        NotificationCompat.Builder builder = new NotificationCompat.Builder(context,"firstNotif")
                .setSmallIcon(R.drawable.ic_launcher)
                .setContentTitle("Notification")
                .setContentText("Started at " + catering)
                .setPriority(NotificationCompat.PRIORITY_DEFAULT);

        NotificationManagerCompat notificationManager = NotificationManagerCompat.from(context);

        notificationManager.notify(110,builder.build());


        return Worker.Result.success();
    }

    private void createNotificationChannel() {
        if(Build.VERSION.SDK_INT>= Build.VERSION_CODES.O){
            CharSequence name = "channel";
            String description = "Notif Channel";
            int importance = NotificationManager.IMPORTANCE_DEFAULT;
            NotificationChannel channel = new NotificationChannel("firstNotif",name,importance);
            channel.setDescription(description);

            NotificationManager notificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
           notificationManager.createNotificationChannel(channel);
        }
    }

}

在我的活动范围内

UploadTask.context = FlightDescriptionActivity.this;
PeriodicWorkRequest periodicWorkRequest = new PeriodicWorkRequest.Builder(UploadTask.class,15,TimeUnit.MINUTES)
                    .setInputData(new Data.Builder()
                            .putString(UploadTask.FLIGHT_NUMBER,flightNumber)
                            .putString(UploadTask.DEPARTURE_DATE,departure_date)
                            .build())
                    .build();
            WorkManager.getInstance().enqueue(periodicWorkRequest);

以下是我的存储库的代码。 存储库

public class FlightRepository {

    private FlightDao flightDao;
    private LiveData<List<Flight>> allFlights;

    public FlightRepository(Application application) {
        FlightDatabase database = FlightDatabase.getInstance(application);
        flightDao = database.flightDao();
        allFlights = flightDao.getAllFlights();

    }

    public void insert(Flight flight) {
        new InsertFlightAsyncTask(flightDao).execute(flight);
    }

    public void update(Flight flight) {
        new UpdateFlightAsyncTask(flightDao).execute(flight);
    }

    public void delete(Flight flight) {
        new DeleteFlightAsyncTask(flightDao).execute(flight);
    }

    public void deleteAllFlights() {
        new DeleteAllFlightsAsyncTask(flightDao).execute();
    }

    public LiveData<List<Flight>> getAllFlights() {
        return allFlights;
    }

    public Flight getFlight(String flightNumber,String date){
        return flightDao.getFlight(flightNumber,date);
    }

    public boolean existsFlight(String flightNumber,String date){
        return flightDao.existsFlight(flightNumber,date);
    }
}

如何在我的 Worker 类中初始化它？