Xamarin.Forms.Pages/UriJsonSource.cs

   1 using System;
   2 using System.IO;
   3 using System.Net;
   4 using System.Net.Http;
   5 using System.Threading.Tasks;
   6
   7 namespace Xamarin.Forms.Pages
   8 {
   9         public class UriJsonSource : JsonSource
  10         {
  11                 public static readonly BindableProperty UriProperty = BindableProperty.Create(nameof(Uri), typeof(Uri),
  12                         typeof(UriJsonSource), null);
  13
  14                 [TypeConverter(typeof(UriTypeConverter))]
  15                 public Uri Uri
  16                 {
  17                         get { return (Uri)GetValue(UriProperty); }
  18                         set { SetValue(UriProperty, value); }
  19                 }
  20
  21                 public override async Task<string> GetJson()
  22                 {
  23                         var webClient = new HttpClient();
  24                         try
  25                         {
  26                                 string json = await webClient.GetStringAsync(Uri);
  27                                 return json;
  28                         }
  29                         catch
  30                         {
  31                                 return null;
  32                         }
  33                 }
  34         }
  35 }