Bug 36201 - Webview fails to load long OAuth urls on iOS
Summary: Webview fails to load long OAuth urls on iOS
Alias: None
Product: Forms
Classification: Xamarin
Component: iOS ()
Version: 2.0.0
Hardware: PC Mac OS
: --- normal
Target Milestone: ---
Assignee: Bugzilla
Depends on:
Reported: 2015-11-24 05:56 UTC by Prashant Cholachagudda
Modified: 2016-12-21 02:33 UTC (History)
3 users (show)

Is this bug a regression?: ---
Last known good build:

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Description Prashant Cholachagudda 2015-11-24 05:56:12 UTC
Webview fails to load long OAuth urls on iOS. Note that we can load this URL in the Xamarin.iOS Apps

Sample code:
namespace FormsApp
	public class App : Application
		public App ()
			string url = "https://kpd-login-tst.azurewebsites.net/core/connect/authorize?response_type=code&redirect_uri=https%3A%2F%2Fkpd-login-tst.azurewebsites.net%2Fapps%2FKpd.Apps.Timesheets.Mobile.Phone.iOS&client_id=Kpd.Apps.Timesheets.Mobile.Phone.iOS&scope=Kpd_Api%20Write_Timesheets_WebAPI%20Read_Timesheets_WebAPI%20offline_access&acr_values=tenant%3Ab9e1983e-52d4-4d13-aff8-6c466caeaeac";

			// The root page of your application
			MainPage = new ContentPage {
				Content = new WebView {
					VerticalOptions = LayoutOptions.Center,

Comment 1 Stefan de Vogelaere 2015-11-24 06:02:36 UTC
in iOS, the above scopes (separated with %20) are converted back to spaces once given to NSUrl.

it helps to do:
var url = (NSString)View.Url;
url = url.CreateStringByAddingPercentEscapes(NSStringEncoding.UTF8);
Comment 2 adrianknight89 2016-10-13 04:58:36 UTC
I don't seem to have this issue in iOS 10.
Comment 3 Samantha Houts [MSFT] 2016-12-21 02:33:18 UTC
I am unable to reproduce this issue on iOS 9 or iOS 10 with the latest stable Xamarin.Forms. If you continue to experience this issue, please reopen this issue with a reproduction project and any additional details that may help us diagnose the problem.

Warm regards,
Xamarin Forms Team