Get forecast from weatherapi.com

Question

Hi,

I have below code to consume the forecast weather from weatherapi.com:

async void GetForecast()  
{  
    var client = new HttpClient();  
  
    string url = string.Format("{0}/current.json?key={1}&q={2},{3}", App.WeatherURL, App.WeatherAPI, App.Latitude, App.Longitude);  
  
    client.BaseAddress = new Uri(url);  
      
    var response = await client.GetAsync(url);  
    var result = await response.Content.ReadAsStringAsync();  
  
    CurrentWeather.Root data = JsonSerializer.Deserialize<CurrentWeather.Root>(result);  
  
    ListViewForecast.ItemsSource = data;  
}  

and I am getting the correct data from the JSON as you can see in below image:

but the problem is I am not able to show the data in my XAML. I tried:

Text="{Binding forecast.forecastday.hour.temp_c}"  

Here is my complete Class:

   using System;  
   using System.Collections.Generic;  
     
   namespace MyWeatherApp  
   {  
       class ForecastWeather  
       {  
           // Root myDeserializedClass = JsonConvert.DeserializeObject<Root>(myJsonResponse);  
           public class Astro  
           {  
               public string sunrise { get; set; }  
               public string sunset { get; set; }  
               public string moonrise { get; set; }  
               public string moonset { get; set; }  
               public string moon_phase { get; set; }  
               public string moon_illumination { get; set; }  
           }  
     
           public class Condition  
           {  
               public string text { get; set; }  
               public string icon { get; set; }  
               public int code { get; set; }  
           }  
     
           public class Current  
           {  
               public int last_updated_epoch { get; set; }  
               public string last_updated { get; set; }  
               public double temp_c { get; set; }  
               public double temp_f { get; set; }  
               public int is_day { get; set; }  
               public Condition condition { get; set; }  
               public double wind_mph { get; set; }  
               public double wind_kph { get; set; }  
               public int wind_degree { get; set; }  
               public string wind_dir { get; set; }  
               public double pressure_mb { get; set; }  
               public double pressure_in { get; set; }  
               public double precip_mm { get; set; }  
               public double precip_in { get; set; }  
               public int humidity { get; set; }  
               public int cloud { get; set; }  
               public double feelslike_c { get; set; }  
               public double feelslike_f { get; set; }  
               public double vis_km { get; set; }  
               public double vis_miles { get; set; }  
               public double uv { get; set; }  
               public double gust_mph { get; set; }  
               public double gust_kph { get; set; }  
           }  
     
           public class Day  
           {  
               public double maxtemp_c { get; set; }  
               public double maxtemp_f { get; set; }  
               public double mintemp_c { get; set; }  
               public double mintemp_f { get; set; }  
               public double avgtemp_c { get; set; }  
               public double avgtemp_f { get; set; }  
               public double maxwind_mph { get; set; }  
               public double maxwind_kph { get; set; }  
               public double totalprecip_mm { get; set; }  
               public double totalprecip_in { get; set; }  
               public double avgvis_km { get; set; }  
               public double avgvis_miles { get; set; }  
               public double avghumidity { get; set; }  
               public int daily_will_it_rain { get; set; }  
               public int daily_chance_of_rain { get; set; }  
               public int daily_will_it_snow { get; set; }  
               public int daily_chance_of_snow { get; set; }  
               public Condition condition { get; set; }  
               public double uv { get; set; }  
           }  
     
           public class Forecast  
           {  
               public List<Forecastday> forecastday { get; set; }  
           }  
     
           public class Forecastday  
           {  
               public string date { get; set; }  
               public int date_epoch { get; set; }  
               public Day day { get; set; }  
               public Astro astro { get; set; }  
               public List<Hour> hour { get; set; }  
           }  
     
           public class Hour  
           {  
               public int time_epoch { get; set; }  
               public string time { get; set; }  
               public double temp_c { get; set; }  
               public double temp_f { get; set; }  
               public int is_day { get; set; }  
               public Condition condition { get; set; }  
               public double wind_mph { get; set; }  
               public double wind_kph { get; set; }  
               public int wind_degree { get; set; }  
               public string wind_dir { get; set; }  
               public double pressure_mb { get; set; }  
               public double pressure_in { get; set; }  
               public double precip_mm { get; set; }  
               public double precip_in { get; set; }  
               public int humidity { get; set; }  
               public int cloud { get; set; }  
               public double feelslike_c { get; set; }  
               public double feelslike_f { get; set; }  
               public double windchill_c { get; set; }  
               public double windchill_f { get; set; }  
               public double heatindex_c { get; set; }  
               public double heatindex_f { get; set; }  
               public double dewpoint_c { get; set; }  
               public double dewpoint_f { get; set; }  
               public int will_it_rain { get; set; }  
               public int chance_of_rain { get; set; }  
               public int will_it_snow { get; set; }  
               public int chance_of_snow { get; set; }  
               public double vis_km { get; set; }  
               public double vis_miles { get; set; }  
               public double gust_mph { get; set; }  
               public double gust_kph { get; set; }  
               public double uv { get; set; }  
           }  
     
           public class Location  
           {  
               public string name { get; set; }  
               public string region { get; set; }  
               public string country { get; set; }  
               public double lat { get; set; }  
               public double lon { get; set; }  
               public string tz_id { get; set; }  
               public int localtime_epoch { get; set; }  
               public string localtime { get; set; }  
           }  
     
           public class Root  
           {  
               public Location location { get; set; }  
               public Current current { get; set; }  
               public Forecast forecast { get; set; }  
           }  
       }  
   }  

Answer 1

Hello,​

Firstly, we cannot use Text="{Binding forecast.forecastday.hour.temp_c}" to get temp_c directly. Because forecastday and hour are List<>.

I use free Api from weatherapi to get forecast. When we deserialize Json to get ForecastWeather.Root object, we need to ForecastWeather.Forecast object by data.forecast, then get List<ForecastWeather.Forecastday> by forecast.forecastday. Now we get a List, I make a test to get the first record, So I use forecastdays[0] to get List<Hour>, it is a List as well, I get the first record for testing by forecastdays[0].hour[0], then we can get the temp_c property like following code.

   async void GetForecast()  
           {  
               var client = new HttpClient();  
     
               string url = "https://api.weatherapi.com/v1/forecast.json?key=8c1e055xxxxxxxxxxxxxxxxxx905&q=London&days=7&aqi=yes&alerts=no";  
               //string url = string.Format("{0}/current.json?key={1}&q={2},{3}", App.WeatherURL, App.WeatherAPI, App.Latitude, App.Longitude);  
               client.BaseAddress = new Uri(url);  
     
               var response = await client.GetAsync(url);  
               string result = await response.Content.ReadAsStringAsync();  
               ForecastWeather.Root data =   JsonSerializer.Deserialize<ForecastWeather.Root>(result);  
     
               ForecastWeather.Forecast forecast = data.forecast;  
               List<ForecastWeather.Forecastday> forecastdays= forecast.forecastday;  
               double s=forecastdays[0].hour[0].temp_c;  
               
           }  

Best Regards,

Leon Lu

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