From 1ebad6bca5ebc45aebc19c174615f5e70dd27a9d Mon Sep 17 00:00:00 2001
From: Matt Portune <59324545+mportune-bw@users.noreply.github.com>
Date: Sat, 16 Oct 2021 07:56:17 -0400
Subject: [PATCH] fix for crash when terminating app (#1589)

---
 src/iOS/AppDelegate.cs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/iOS/AppDelegate.cs b/src/iOS/AppDelegate.cs
index 467c94677..698bda7e2 100644
--- a/src/iOS/AppDelegate.cs
+++ b/src/iOS/AppDelegate.cs
@@ -188,6 +188,12 @@ namespace Bit.iOS
             _storageService.SaveAsync(Constants.LastActiveTimeKey, _deviceActionService.GetActiveTime());
             _messagingService.Send("slept");
 
+            if (UIApplication.SharedApplication.KeyWindow == null)
+            {
+                // Despite IDE warning, KeyWindow is null here during app termination in iOS 15
+                return;
+            }
+
             var view = new UIView(UIApplication.SharedApplication.KeyWindow.Frame)
             {
                 Tag = 4321