From 37670956c0c9aba5bcc758fac9b74cec85b1f41a Mon Sep 17 00:00:00 2001
From: Asaf Korem <asaf.korem@gmail.com>
Date: Wed, 5 Jan 2022 17:28:04 +0200
Subject: [PATCH] fix(iOS): remove alert's window when call to `hide`.

Resolves this issue: #32304.

Without this change, calling to hide an alert, leaves a `UIWindow`
that blocks user interactions with the screen.

The correct way to remove a `UIWindow` in iOS is to set its
hidden property to `YES`.

Also, it is required to remove all references to the window (the
associated `windowScene` for example) and ARC will automatically
free this `UIWindow`.

Co-authored-by: paddlefish <paddlefish@users.noreply.github.com>
---
 React/CoreModules/RCTAlertController.m | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/React/CoreModules/RCTAlertController.m b/React/CoreModules/RCTAlertController.m
index 7b326a2ad31ee8..2465e62cc2a97e 100644
--- a/React/CoreModules/RCTAlertController.m
+++ b/React/CoreModules/RCTAlertController.m
@@ -35,6 +35,12 @@ - (void)show:(BOOL)animated completion:(void (^)(void))completion
 
 - (void)hide
 {
+  [_alertWindow setHidden: YES];
+
+  if (@available(iOS 13, *)) {
+    _alertWindow.windowScene = nil;
+  }
+
   _alertWindow = nil;
 }