Address AI concern

HarishwaranVijayakumar · HarishwaranVijayakumar · commit 97694b00492f · 2026-03-19T13:34:36.000+05:30
diff --git a/src/Core/src/Fonts/FontManager.iOS.cs b/src/Core/src/Fonts/FontManager.iOS.cs
@@ -1,12 +1,13 @@
 ﻿using System;
 using System.Collections.Concurrent;
+using Foundation;
 using Microsoft.Extensions.Logging;
 using UIKit;
 
 namespace Microsoft.Maui
 {
 	/// <inheritdoc/>
-	public class FontManager : IFontManager
+	public class FontManager : IFontManager, IDisposable
 	{
 		// UIFontWeight[Constant] is internal in Xamarin.iOS but the convertion from
 		// the public (int-based) enum is not helpful in this case.
@@ -28,6 +29,7 @@ public class FontManager : IFontManager
 		readonly IFontRegistrar _fontRegistrar;
 		readonly IServiceProvider? _serviceProvider;
 
+		NSObject? _contentSizeCategoryObserver;
 		UIFont? _defaultFont;
 
 		/// <summary>
@@ -44,7 +46,7 @@ public FontManager(IFontRegistrar fontRegistrar, IServiceProvider? serviceProvid
 			// When the preferred content size category changes (Dynamic Type),
 			// clear the font cache so subsequent requests create new fonts
 			// with the current content size category scaling.
-			UIApplication.Notifications.ObserveContentSizeCategoryChanged((sender, args) => _fonts.Clear());
+			_contentSizeCategoryObserver = UIApplication.Notifications.ObserveContentSizeCategoryChanged((sender, args) => _fonts.Clear());
 		}
 
 		/// <inheritdoc/>
@@ -188,6 +190,12 @@ UIFont ApplyScaling(Font font, UIFont uiFont)
 			}
 		}
 
+		public void Dispose()
+		{
+			_contentSizeCategoryObserver?.Dispose();
+			_contentSizeCategoryObserver = null;
+		}
+
 		string? CleanseFontName(string fontName)
 		{
 			// First check Alias
diff --git a/src/Core/src/PublicAPI/net-ios/PublicAPI.Unshipped.txt b/src/Core/src/PublicAPI/net-ios/PublicAPI.Unshipped.txt
@@ -1,2 +1,3 @@
-#nullable enable
+﻿#nullable enable
+Microsoft.Maui.FontManager.Dispose() -> void
 override Microsoft.Maui.Platform.MauiView.DidUpdateFocus(UIKit.UIFocusUpdateContext! context, UIKit.UIFocusAnimationCoordinator! coordinator) -> void
diff --git a/src/Core/src/PublicAPI/net-maccatalyst/PublicAPI.Unshipped.txt b/src/Core/src/PublicAPI/net-maccatalyst/PublicAPI.Unshipped.txt
@@ -1,2 +1,3 @@
 #nullable enable
+Microsoft.Maui.FontManager.Dispose() -> void
 override Microsoft.Maui.Platform.MauiView.DidUpdateFocus(UIKit.UIFocusUpdateContext! context, UIKit.UIFocusAnimationCoordinator! coordinator) -> void

Original file line number	Diff line number	Diff line change
`@@ -1,2 +1,3 @@`
`1`	`1`	`#nullable enable`
	`2`	`+Microsoft.Maui.FontManager.Dispose() -> void`
`2`	`3`	`override Microsoft.Maui.Platform.MauiView.DidUpdateFocus(UIKit.UIFocusUpdateContext! context, UIKit.UIFocusAnimationCoordinator! coordinator) -> void`