[Android] Fix for WebView Fails to Load URLs with Certain Encoded Characters

src/Controls/tests/TestCases.HostApp/Issues/Issue26843.cs

@@ -0,0 +1,58 @@
+namespace Maui.Controls.Sample.Issues;
+
+[XamlCompilation(XamlCompilationOptions.Compile)]
+[Issue(IssueTracker.Github, 26843, "WebView Fails to Load URLs with Certain Encoded Characters on Android", PlatformAffected.Android)]
+	public partial class Issue26843 : ContentPage
+	{
+		private Label navigationResultLabel;
+		public Issue26843()
+		{
+			navigationResultLabel = new Label
+			{
+				AutomationId = "NavigationResultLabel",
+				HorizontalOptions = LayoutOptions.Center,
+				VerticalOptions = LayoutOptions.Center,
+				TextColor = Colors.Black,
+				FontSize = 14
+			};
+
+			var webView = new WebView
+			{
+				AutomationId = "WebView",
+				ZIndex = 1
+			};
+
+			webView.Source = "https://github.com/SuthiYuvaraj/maui/blob/390e4cd1c5eed59ecaf1fcd37975e7f6f5422d6d/src/Controls/tests/TestCases.HostApp/Resources/Raw/01-A%C4%9F-Sistem%20Bilgi%20G%C3%BCvenli%C4%9Fi%20Md/dotnet%20maui.pdf";
+			webView.Navigated += OnNavigated;
+
+			var layout = new Grid
+			{
+				RowDefinitions =
+				{
+					new RowDefinition { Height = new GridLength(1, GridUnitType.Auto) },
+					new RowDefinition { Height = new GridLength(1, GridUnitType.Star) }
+				},
+				Children = {
+					navigationResultLabel,
+					webView
+				}
+			};
+
+			Grid.SetRow(navigationResultLabel, 0);
+			Grid.SetRow(webView, 1);
+
+			Content = layout;
+		}
+
+		private void OnNavigated(object sender, WebNavigatedEventArgs e)
+		{
+			if (e.Result == WebNavigationResult.Success)
+			{
+				navigationResultLabel.Text = $"Successfully navigated to the encoded URL";
+			}
+			else
+			{
+				navigationResultLabel.Text = $"Failed to navigate to the encoded URL";
+			}
+		}
+	}

src/Controls/tests/TestCases.Shared.Tests/Tests/Issues/Issue26843.cs

@@ -0,0 +1,22 @@
+using NUnit.Framework;
+using UITest.Appium;
+using UITest.Core;
+
+namespace Microsoft.Maui.TestCases.Tests.Issues;
+
+	internal class Issue26843 : _IssuesUITest
+	{
+		public Issue26843(TestDevice device) : base(device) { }
+
+		public override string Issue => "WebView Fails to Load URLs with Certain Encoded Characters on Android";
+
+		[Test]
+		[Category(UITestCategories.WebView)]
+		public void WebViewShouldLoadEncodedUrl()
+		{
+			var label = App.WaitForElement("NavigationResultLabel");
+			App.WaitForElement("WebView");
+			Assert.That(label.GetText(), Is.EqualTo("Successfully navigated to the encoded URL"));
+		}
+	}
+

src/Core/src/Platform/Android/MauiWebView.cs

@@ -32,7 +32,7 @@ void IWebViewDelegate.LoadUrl(string? url)
 					_handler.CurrentNavigationEvent = WebNavigationEvent.NewPage;
 				}
 
-				if (url != null && !url.StartsWith('/') && !Uri.IsWellFormedUriString(url, UriKind.Absolute))
+				if (url != null && !url.StartsWith('/') && !Uri.TryCreate(url, UriKind.Absolute, out _))
 				{
 					// URLs like "index.html" can't possibly load, so try "file:///android_asset/index.html"
 					url = AssetBaseUrl + url;