chore: Adjust theming of Android status bar based on app theme

Author: MartinZikmund

src/Uno.UI/UI/Xaml/Application.Android.cs

@@ -10,6 +10,7 @@
 using Microsoft.UI.Xaml.Controls.Primitives;
 using Windows.UI.ViewManagement;
 using Colors = Microsoft.UI.Colors;
+using Uno.UI.Xaml.Controls;
 
 namespace Microsoft.UI.Xaml;
 
@@ -31,12 +32,5 @@ static partial void StartPartial(ApplicationInitializationCallback callback)
 	/// </remarks>
 	private DateTimeOffset GetSuspendingOffset() => DateTimeOffset.Now.AddSeconds(5);
 
-	partial void ApplySystemOverlaysTheming()
-	{
-		var requestedTheme = InternalRequestedTheme;
-
-		StatusBar.GetForCurrentView().ForegroundColor = requestedTheme == ApplicationTheme.Dark
-			? Colors.White
-			: Colors.Black;
-	}
+	partial void ApplySystemOverlaysTheming() => NativeWindowWrapper.Instance?.ApplySystemOverlaysTheming();
 }

src/Uno.UI/UI/Xaml/Window/Native/NativeWindowWrapper.Android.cs

@@ -3,14 +3,12 @@
 using Android.Runtime;
 using Android.Util;
 using Android.Views;
-using AndroidX.AppCompat.App;
 using AndroidX.Core.View;
 using Uno.Disposables;
 using Uno.Foundation.Logging;
 using Uno.UI.Extensions;
 using Windows.ApplicationModel.Core;
 using Windows.Foundation;
-using Windows.Graphics;
 using Windows.Graphics.Display;
 using Windows.UI.Core;
 using Windows.UI.ViewManagement;
@@ -78,6 +76,7 @@ internal void RaiseNativeSizeChanged()
 		Bounds = new Rect(default, windowSize);
 		VisibleBounds = visibleBounds;
 		Size = new((int)(windowSize.Width * RasterizationScale), (int)(windowSize.Height * RasterizationScale));
+		ApplySystemOverlaysTheming();
 
 		if (_previousTrueVisibleBounds != visibleBounds)
 		{
@@ -88,7 +87,11 @@ internal void RaiseNativeSizeChanged()
 		}
 	}
 
-	protected override void ShowCore() => RemovePreDrawListener();
+	protected override void ShowCore()
+	{
+		ApplySystemOverlaysTheming();
+		RemovePreDrawListener();
+	}
 
 	private (Size windowSize, Rect visibleBounds) GetVisualBounds()
 	{
@@ -191,6 +194,24 @@ private WindowInsetsCompat GetWindowInsets(Activity activity)
 		return null;
 	}
 
+	internal void ApplySystemOverlaysTheming()
+	{
+		if ((int)Android.OS.Build.VERSION.SdkInt >= 35)
+		{
+			// In edge-to-edge experience we want to adjust the theming of status bar to match the app theme.
+			if ((ContextHelper.Current is Activity activity) &&
+			activity.Window?.DecorView is { FitsSystemWindows: false } decorView)
+			{
+				var requestedTheme = Microsoft.UI.Xaml.Application.Current.RequestedTheme;
+
+				var insetsController = WindowCompat.GetInsetsController(activity.Window, decorView);
+
+				// "appearance light" refers to status bar set to light theme == dark foreground
+				insetsController.AppearanceLightStatusBars = requestedTheme == Microsoft.UI.Xaml.ApplicationTheme.Light;
+			}
+		}
+	}
+
 	private Size GetWindowSize()
 	{
 		if (ContextHelper.Current is not Activity activity)

src/Uno.UWP/UI/ViewManagement/StatusBar/StatusBar.Android.cs

@@ -143,7 +143,7 @@ internal void UpdateSystemUiVisibility()
 						}
 					}
 
-					// A bit confusingly, "appearance light" refers to light theme, so in dark foreground is used!
+					// A bit confusingly, "appearance light" refers to light theme, so dark foreground is used!
 					insetsController.AppearanceLightStatusBars = _foregroundType == StatusBarForegroundType.Dark;
 				}
 			}