将Xamarin Forms应用程序链接到API

Question

I have an idea for a project in college. The idea is to make a Xamarin app that will find the cheapest flight between an entered date from a select number of airlines for the user. (Just like SkyScanner or Expedia)

I think the best way to do this would be by extracting the data from the airline's API's and comparing the flights that way.

What I was wondering is what would be the best way to do this? I'm proficient in C# and Javascript/Jquery. Any help is welcome.

Answer 1

If you are working on C#, then you can do all the work on it.

1) You will need to build a Web API project and build and endpoit to work with. You have an example of this here: https://docs.microsoft.com/en-us/aspnet/web-api/overview/getting-started-with-aspnet-web-api/tutorial-your-first-web-api

Based on what you want to do, you will have to handle the GET request. Then you can send the parameters as query parameters on your URI. Example: http://localhost/api/values/?datetime=1505766470

2) You will need to send the actual request from your mobile application. For doing this, you can do something like this:

  RestUrl = http://developer.xamarin.com:8081/api/todoitems/
  var uri = new Uri (RestUrl);
  ...
  var response = await client.GetAsync (uri);
  if (response.IsSuccessStatusCode) {
      var content = await response.Content.ReadAsStringAsync ();
      Items = JsonConvert.DeserializeObject <List<TodoItem>> (content);
  }

You have the whole example right here: https://developer.xamarin.com/guides/xamarin-forms/cloud-services/consuming/rest/