尝试从API提取数据

如何解决尝试从API提取数据

我目前正在使用一个Android应用程序，该应用程序显示来自ASP.NET Restful Web API的天气信息。我编写了一种方法，该方法采用城市名称并获取天气信息，然后将其发送到MainActivity，然后将其显示在屏幕上，但是由于某种原因，它将吐出捕获异常消息。我试图在logcat中寻找答案，但没有任何反应。

任何帮助将不胜感激：

用于从api获取数据的方法

public interface WeatherByCityResponse {
        void onError(String message);
        void onResponse(Weatherinformation weatherinformation);
    }

    public void getWeatherByCity(String city,final WeatherByCityResponse weatherByCityResponse) {

        List<Weatherinformation> report = new ArrayList<>();

        String url = QUERY + city;
        JsonArrayRequest request = new JsonArrayRequest(Request.Method.GET,url,null,new Response.Listener<JSONArray>() {
            @Override
            public void onResponse(JSONArray response) {
                try {
                    Weatherinformation weather = new Weatherinformation();

                    JSONObject weatherInfo = response.getJSONObject(0);
                    weather.setId(weatherInfo.getInt("id"));
                    weather.setCity(weatherInfo.getString("city"));
                    weather.setConditions(weatherInfo.getString("condition"));
                    weather.setMinTemp(weatherInfo.getInt("minTemperature"));
                    weather.setMaxTemp(weatherInfo.getInt("maxTemperature"));
                    weather.setwindDirect(weatherInfo.getString("windDirection"));
                    weather.setwindSpeed(weatherInfo.getInt("windSpeed"));
                    weather.setoutlook(weatherInfo.getString("outlook"));

                    weatherByCityResponse.onResponse(weather);

                } catch (JSONException e) {
                    e.printstacktrace();
                }

            }
        },new Response.ErrorListener() {
            @Override
            public void onErrorResponse(VolleyError error) {
                Toast.makeText(context,"ooga booga",Toast.LENGTH_SHORT).show();
            }
        });
        Singleton.getInstance(context).addToRequestQueue(request);
    }