Sugar ORM不会将数据保存到数据库

Question

请给我解决我的麻烦。

这是我的根模型类，实际上是自动生成的POJO：

public static void getWeatherForecastOneDay(final TextView conditionTextView,
                                            final TextView temperatureTextView,
                                            final TextView temperatureFeelsLikeTextView,
                                            final TextView pressureTextView,
                                            final TextView windSpeedTextView,
                                            final TextView windDirectionTextView,
                                            final TextView humidityTextView,
                                            final ImageView weatherPicture) {
    context = MainActivity.context;
    String KEY = context.getResources().getString(R.string.api_key);


    Presenter.getWeatherForecastApi().getForecast7Days(KEY, "Nizhny Novgorod", 7, "ru")
            .enqueue(new Callback<WeatherRootObject>() {
                @Override
                public void onResponse(Call<WeatherRootObject> call, Response<WeatherRootObject> response) {


                    WeatherRootObject weatherRootObject = new WeatherRootObject(
                            response.body().getCurrent(),
                            response.body().getLocation(),
                            response.body().getForecast());
                    weatherRootObject.save();

                    WeatherRootObject weatherRootObjectSaved = WeatherRootObject.findById(WeatherRootObject.class, 1);


                    humidity = weatherRootObjectSaved.getCurrent().getHumidity();
                    imageURI = "http:" + weatherRootObjectSaved.getCurrent().getCondition().getIcon();
                    condition = weatherRootObjectSaved.getCurrent().getCondition().getText();
                    windSpeed = weatherRootObjectSaved.getCurrent().getWindKph();
                    windDirection = weatherRootObjectSaved.getCurrent().getWindDir();
                    pressure = weatherRootObjectSaved.getCurrent().getPressureMb();
                    temperature = weatherRootObjectSaved.getCurrent().getTempC();
                    temperatureFeelsLike = weatherRootObjectSaved.getCurrent().getFeelslikeC();



                    humidityTextView.setText(String.valueOf(humidity));
                    Picasso.get().load(imageURI).into(weatherPicture);
                    conditionTextView.setText(String.valueOf(condition));
                    windSpeedTextView.setText(String.valueOf(windSpeed));
                    windDirectionTextView.setText(String.valueOf(windDirection));
                    pressureTextView.setText(String.valueOf(pressure));
                    temperatureTextView.setText(String.valueOf(temperature));
                    temperatureFeelsLikeTextView.setText(String.valueOf(temperatureFeelsLike));



                }

                @Override
                public void onFailure(Call<WeatherRootObject> call, Throwable t) {
                    Log.i("GETTA", t.toString());


                }
            });


}

我试图将Object保存到数据库中只是为了对其进行缓存并将其显示在屏幕上。这是我在Presenter中的方法，该方法用于下载数据并将其显示在屏幕上：

select 
    timestamp, 
    group_concat(case when dev="01" then event else "" end, "") as D01, 
    group_concat(case when dev="02" then event else "" end, "") as D02  
from 
    table01 
group by 
    timestamp;

因此，当我只是使用翻新版下载信息时，它就可以完美运行。当我尝试保存数据并在填充TextViews时使用它时，我总是会收到NullPointerException：     尝试在空对象引用上调用虚拟方法'int com.weather.Model.Current.getHumidity（）'

因此，看来，当我请求数据时数据并没有存储在DB中，我也无法理解为什么。