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

src/Controls/tests/Core.UnitTests/WebViewUnitTests.cs

@@ -7,6 +7,7 @@
 using Microsoft.Maui.Controls.PlatformConfiguration.WindowsSpecific;
 using Microsoft.Maui.Graphics;
 using Xunit;
+using Microsoft.Maui.Platform;
 using WindowsOS = Microsoft.Maui.Controls.PlatformConfiguration.Windows;
 
 namespace Microsoft.Maui.Controls.Core.UnitTests
@@ -161,5 +162,18 @@ public void TestSettingOfCookie()
 
 			Assert.NotNull(defaultWebView.Cookies);
 		}
+
+		[Fact]
+		public void TestUrlWithNonWesternCharacters()
+		{
+			// This test validates that URLs with non-Western characters (e.g., "Ğ" and spaces encoded as "%20")
+			// are correctly identified as absolute URLs and not treated as relative URLs.
+
+			string finalUrl = "https://example.com/test-Ağ-Sistem%20Bilgi%20Güvenliği%20Md/Guide.pdf";
+
+			bool valid = WebViewHelper.IsRelativeUrl(finalUrl);
+
+			Assert.False(valid, "The URL was identified as a relative 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 is not null && WebViewHelper.IsRelativeUrl(url))
 				{
 					// URLs like "index.html" can't possibly load, so try "file:///android_asset/index.html"
 					url = AssetBaseUrl + url;

src/Core/src/Platform/WebViewHelper.cs

@@ -0,0 +1,11 @@
+using System;
+
+namespace Microsoft.Maui.Platform;
+
+internal static class WebViewHelper
+{
+    internal static bool IsRelativeUrl(string url)
+    {
+        return !url.StartsWith('/') && !Uri.TryCreate(url, UriKind.Absolute, out _);
+    }
+}