Answers

• FabricioBertani USMember ✭✭✭

  February 2018

  Take a look to RestServices: Consuming a RESTful Web Service. Did this web have an API endpoint to connect?

  0
• TedRogers USMember ✭✭✭✭

  February 2018 Accepted Answer

  There are lots of solutions but you could just use the out of the box HttpClient. Here is an example I through together as an example. It probably won't compile but should give you the idea.

  using System;
  using System.Net;
  using System.Net.Http;
  using System.Threading.Tasks;
  
  public class WebInterface
  {
      private HttpClient _client;
  
      public WebInterface(HttpClient httpClient)
      {
          _client = httpClient;
      }
  
      public async Task<T> MakeGetRequest<T>(string resource)
      {
          try
          {
              var request = new HttpRequestMessage()
              {
                  RequestUri = new Uri(_client.BaseAddress, resource),
                  Method = HttpMethod.Get,
              };
              var response = await _client.SendAsync(request);
              if (response.StatusCode == System.Net.HttpStatusCode.OK)
              {
                  var responseString = await response.Content.ReadAsStringAsync();
                  var model = await DeserializeObject<T>(responseString);
                  return model;
              }
              else if (response.StatusCode == HttpStatusCode.Unauthorized)
              {
                  // you need to maybe re-authenticate here
                  return default(T);
              }
              else
              {
                  return default(T);
              }
          }
          catch (Exception e)
          {
              throw e;
          }
      }
  }
  

  5
• JonasPTFL Member ✭✭

  February 2018

  @TedRogers said:
  There are lots of solutions but you could just use the out of the box HttpClient. Here is an example I through together as an example. It probably won't compile but should give you the idea.

  Sorry, but i dont understand the code
  Where can i place my url?
  And how can i use it in my xamarin.android App?

  0
• TedRogers USMember ✭✭✭✭

  February 2018 edited February 2018 Accepted Answer

  The resource parameter is your url. Just make sure the RequestUri parameter of the HttpRequestMessage is set to your url.

  From your app you might call it like this:

  var result = await MakeGetReqeust("https://www.apple.com");

  I was assuming you were trying to call and web service endpoint. What is it your are trying to do?

  If you are trying to just display a webpage, then you would want to use a WebView on your page.

  If you don't understand the code above, I am guessing it is the async/await mechanism. I would suggest spending time learning what those are as they are key to doing any Xamarin development.

  5
• JonasPTFL Member ✭✭

  February 2018

  @TedRogers said:
  The resource parameter is your url. Just make sure the RequestUri parameter of the HttpRequestMessage is set to your url.

  From your app you might call it like this:

  Yes, you are right i try to call an web service end point...
  And thank you for the answer

  0