Xamarin Form HttpClient Stuck

Question

I'm trying to get response from soundcloud API. Here is my code.

public static async Task<string> GetTheGoodStuff() { var client = new HttpClient(new NativeMessageHandler()); var response = await client.GetAsync("http://api.soundcloud.com/playlists?client_id=17ecae4040e171a5cf25dd0f1ee47f7e&limit=1"); var responseString = response.Content.ReadAsStringAsync().Result; return responseString; }

But it's stucks on var response = await client.GetAsync. How can I fix this?

Thanks!

Without new NativeMessageHandler() your code worked for me... BTW instead of blocking Result use await response.Content.ReadAsStringAsync() — Eser
– Eser, Commented Apr 2, 2016 at 0:12
@Eser I think OP is using ModernHttpClient, so need references to that in PCL and native projects. — Mark Larter
– Mark Larter, Commented Apr 2, 2016 at 5:22

Mark Larter · Accepted Answer · 2016-04-02 05:32:51Z

I did just use your code in a PCL, only thing I changed is the url (to https) to satisfy iOS ATS requirements, and called it from an async method. Seems to work fine running on iOS device. I did grab references to Microsoft.Net.Http in the PCL, and ModernHttpClient in the PCL and in the platform-specific projects (via NuGet).

Your code in some PCL view model class:

using System.Net.Http; using System.Threading.Tasks; using ModernHttpClient; public class ItemsViewModel { ... public async Task<string> GetPlaylist() { // Use https to satisfy iOS ATS requirements. var client = new HttpClient(new NativeMessageHandler()); var response = await client.GetAsync("https://api.soundcloud.com/playlists?client_id=17ecae4040e171a5cf25dd0f1ee47f7e&limit=1"); var responseString = await response.Content.ReadAsStringAsync(); return responseString; } ... }

Then in a PCL page class that instantiates and uses an instance of the view model:

public partial class ItemsPage : ContentPage { public ItemsPage() { InitializeComponent(); Vm = new ItemsViewModel(); BindingContext = Vm; } protected override async void OnAppearing() { var playlist = await Vm.GetPlaylist(); // Do something cool with the string, maybe some data binding. } // Public for data binding. public ItemsViewModel Vm { get; private set; } }

Hope this helps.

Bình Nguyễn Quang · Accepted Answer · 2018-08-16 08:17:44Z

I have the same problem. I fixed it by:

var response = httpClient.GetAsync(ApiUrl).ConfigureAwait(false).GetAwaiter().GetResult();

you can try it.

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