Inheriting StatusBar and NavigationBar background colors

Author: kubaflo

src/Controls/src/Core/Platform/ModalNavigationManager/ModalNavigationManager.Android.cs

@@ -256,13 +256,24 @@ public ModalFragment(IMauiContext mauiContext, Page modal)
 
 				dialog.Window.SetBackgroundDrawable(TransparentColorDrawable);
 
-				var attributes = Context?.GetActivity()?.Window?.Attributes;
+				var mainActivityWindow = Context?.GetActivity()?.Window;
+				var attributes = mainActivityWindow?.Attributes;
 
 				if (attributes is not null)
 				{
 					dialog.Window.SetSoftInputMode(attributes.SoftInputMode);
 				}
 
+				if (mainActivityWindow is not null)
+				{
+					var navigationBarColor = mainActivityWindow.NavigationBarColor;
+					var statusBarColor = mainActivityWindow.StatusBarColor;
+#pragma warning disable CA1422
+					dialog.Window.SetNavigationBarColor(new AColor(navigationBarColor));
+				 	dialog.Window.SetStatusBarColor(new AColor(statusBarColor));
+#pragma warning restore CA1422
+				}
+
 				return dialog;
 			}
 

src/Controls/tests/TestCases.HostApp/Issues/Issue28552.cs

@@ -0,0 +1,32 @@
+namespace Maui.Controls.Sample.Issues;
+
+[Issue(IssueTracker.Github, 28552, "Changing StatusBar and NavigationBar background color doesn't work with Modal pages", PlatformAffected.Android)]
+public class Issue28552 : ContentPage
+{
+	public Issue28552()
+	{
+		Content = new Button()
+		{
+			Text = "Click to Open Modal",
+			AutomationId = "OpenModalButton",
+			Command = new Command(() =>
+			{
+#if ANDROID
+					Android.Views.Window window = Microsoft.Maui.ApplicationModel.Platform.CurrentActivity.Window;
+#pragma warning disable CA1422
+					window.SetNavigationBarColor(Android.Graphics.Color.Purple);
+					window.SetStatusBarColor(Android.Graphics.Color.Green);
+#endif
+				Window!.Page!.Navigation.PushModalAsync(new ContentPage
+				{
+					Content = new Label
+					{
+						VerticalOptions = LayoutOptions.Center,
+						Text = "Hello from Maui!",
+						AutomationId = "LabelOnModalPage"
+					}
+				}, false);
+			})
+		};
+	}
+}

src/Controls/tests/TestCases.Shared.Tests/Tests/Issues/Issue28552.cs

@@ -0,0 +1,25 @@
+#if ANDROID
+using NUnit.Framework;
+using UITest.Appium;
+using UITest.Core;
+
+namespace Microsoft.Maui.TestCases.Tests.Issues;
+public class Issue28552 : _IssuesUITest
+{
+	public Issue28552(TestDevice testDevice) : base(testDevice)
+	{
+	}
+
+	public override string Issue => "Changing StatusBar and NavigationBar background color doesn't work with Modal pages";
+
+	[Test]
+	[Category(UITestCategories.Navigation)]
+	public void StatusBarAndNavigationBarShouldInheritColor()
+	{
+		App.WaitForElement("OpenModalButton");
+		App.Click("OpenModalButton");
+		App.WaitForElement("LabelOnModalPage");
+		VerifyScreenshot();
+	}
+}
+#endif