1 files changed, 63 insertions, 0 deletions
diff --git a/Xamarin.Forms.Controls.Issues/Xamarin.Forms.Controls.Issues.Shared/Issue1703.cs b/Xamarin.Forms.Controls.Issues/Xamarin.Forms.Controls.Issues.Shared/Issue1703.cs
new file mode 100644
index 00000000..3f301d33
--- /dev/null
+++ b/Xamarin.Forms.Controls.Issues/Xamarin.Forms.Controls.Issues.Shared/Issue1703.cs
@@ -0,0 +1,63 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+using Xamarin.Forms.CustomAttributes;
+
+namespace Xamarin.Forms.Controls
+{
+	[Preserve (AllMembers=true)]
+	[Issue (IssueTracker.Github, 1703, "Memory leak when navigating a page off of a navigation stack", PlatformAffected.Android | PlatformAffected.iOS | PlatformAffected.WinPhone)]
+	public class Issue1703 : NavigationPage
+	{
+		static List<WeakReference> s_pageRefs = new List<WeakReference>();
+
+		public Issue1703 ()
+		{
+			Navigation.PushAsync (GetMainPage ());
+		}
+
+		public static Page GetMainPage()
+		{
+			return CreateWeakReferencedPage();
+		}
+
+		static Page CreateWeakReferencedPage()
+		{
+			GC.Collect();
+			var result = CreatePage();
+			s_pageRefs.Add(new WeakReference(result));
+
+			// Add a second unreferenced page to prove that the problem only exists
+			// when pages are actually navigated to/from
+			s_pageRefs.Add(new WeakReference(CreatePage()));
+			GC.Collect();
+			return result;
+		}
+
+		static Page CreatePage()
+		{
+			var page = new ContentPage();
+			var contents = new StackLayout();
+
+			contents.Children.Add(
+				new Button
+				{
+					Text = "Next Page",
+					Command = new Command(() => page.Navigation.PushAsync(CreateWeakReferencedPage()))
+				});
+			contents.Children.Add(
+				new Label
+				{
+					Text = string.Format(
+						"References alive at time of creation: {0}",
+						s_pageRefs.Count(p => p.IsAlive)),
+					HorizontalOptions = LayoutOptions.CenterAndExpand
+				});
+
+			page.Content = contents;
+			return page;
+		}
+	}
+}
+