[UIKit] Fix crash in UIScreen.Capture() and UIView.Capture() by replacing deprecated UIGraphicsBeginImageContextWithOptions with UIGraphicsImageRenderer. Fixes #24053.

src/UIKit/UIScreen.cs

@@ -41,44 +41,13 @@ public CoreAnimation.CADisplayLink CreateDisplayLink (Action action)
 		/// </remarks>
 		public UIImage Capture ()
 		{
-			if (SystemVersion.CheckiOS (7, 0)) {
-				// This is from https://developer.apple.com/library/content/qa/qa1817/_index.html
-				try {
-					var view = UIApplication.SharedApplication.KeyWindow;
-					UIGraphics.BeginImageContextWithOptions (view.Bounds.Size, view.Opaque, 0);
-					view.DrawViewHierarchy (view.Bounds, true);
-					return UIGraphics.GetImageFromCurrentImageContext ();
-				} finally {
-					UIGraphics.EndImageContext ();
-				}
-			}
-
-			// This is from: https://developer.apple.com/library/ios/#qa/qa2010/qa1703.html
-			var selScreen = new Selector ("screen");
-			var size = Bounds.Size;
-
-			UIGraphics.BeginImageContextWithOptions (size, false, 0);
-
-			try {
-				var context = UIGraphics.GetCurrentContext ();
-
-				foreach (var window in UIApplication.SharedApplication.Windows) {
-					if (window.RespondsToSelector (selScreen) && window.Screen != this)
-						continue;
-
-					context.SaveState ();
-					context.TranslateCTM (window.Center.X, window.Center.Y);
-					context.ConcatCTM (window.Transform);
-					context.TranslateCTM (-window.Bounds.Size.Width * window.Layer.AnchorPoint.X, -window.Bounds.Size.Height * window.Layer.AnchorPoint.Y);
-
-					window.Layer.RenderInContext (context);
-					context.RestoreState ();
-				}
-
-				return UIGraphics.GetImageFromCurrentImageContext ();
-			} finally {
-				UIGraphics.EndImageContext ();
-			}
+			// This is from https://developer.apple.com/library/content/qa/qa1817/_index.html
+			// Updated to use UIGraphicsImageRenderer to avoid deprecated UIGraphicsBeginImageContextWithOptions
+			var view = UIApplication.SharedApplication.KeyWindow;
+			using var renderer = new UIGraphicsImageRenderer (view.Bounds.Size);
+			return renderer.CreateImage ((context) => {
+				view.DrawViewHierarchy (view.Bounds, true);
+			});
 		}
 	}
 }

src/UIKit/UIView.cs

@@ -252,16 +252,11 @@ public static Task<bool> AnimateAsync (double duration, Action animation)
 		///         </remarks>
 		public UIImage Capture (bool afterScreenUpdates = true)
 		{
-			UIImage snapshot;
 			var bounds = Bounds; // try to access objc the smalles amount of times.
-			try {
-				UIGraphics.BeginImageContextWithOptions (bounds.Size, Opaque, 0.0f);
+			using var renderer = new UIGraphicsImageRenderer (bounds.Size);
+			return renderer.CreateImage ((context) => {
 				DrawViewHierarchy (bounds, afterScreenUpdates);
-				snapshot = UIGraphics.GetImageFromCurrentImageContext ();
-			} finally {
-				UIGraphics.EndImageContext ();
-			}
-			return snapshot;
+			});
 		}
 
 		#region Inlined from the UITraitChangeObservable protocol