From 724391648e2757329172a37e681d2f8691550ae2 Mon Sep 17 00:00:00 2001
From: Alex Bumbu <alex.bumbu@8x8.com>
Date: Thu, 27 May 2021 16:53:20 +0300
Subject: [PATCH] fix(ScreenShare): remove listener for native events when app
 unmounts

---
 .../mobile/external-api/middleware.js         | 23 ++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

diff --git a/react/features/mobile/external-api/middleware.js b/react/features/mobile/external-api/middleware.js
index 09f51ac51..93d89d8e4 100644
--- a/react/features/mobile/external-api/middleware.js
+++ b/react/features/mobile/external-api/middleware.js
@@ -5,7 +5,7 @@ import { NativeEventEmitter, NativeModules } from 'react-native';
 
 import { ENDPOINT_TEXT_MESSAGE_NAME } from '../../../../modules/API/constants';
 import { appNavigate } from '../../app/actions';
-import { APP_WILL_MOUNT } from '../../base/app/actionTypes';
+import { APP_WILL_MOUNT, APP_WILL_UNMOUNT } from '../../base/app/actionTypes';
 import {
     CONFERENCE_FAILED,
     CONFERENCE_JOINED,
@@ -93,6 +93,9 @@ MiddlewareRegistry.register(store => next => action => {
     case APP_WILL_MOUNT:
         _registerForNativeEvents(store);
         break;
+    case APP_WILL_UNMOUNT:
+        _unregisterForNativeEvents();
+        break;
     case CONFERENCE_FAILED: {
         const { error, ...data } = action;
 
@@ -349,6 +352,24 @@ function _registerForNativeEvents(store) {
 
 }
 
+/**
+ * Unregister for events sent from the native side via NativeEventEmitter.
+ *
+ * @private
+ * @returns {void}
+ */
+function _unregisterForNativeEvents() {
+    eventEmitter.removeAllListeners(ExternalAPI.HANG_UP);
+    eventEmitter.removeAllListeners(ExternalAPI.SET_AUDIO_MUTED);
+    eventEmitter.removeAllListeners(ExternalAPI.SET_VIDEO_MUTED);
+    eventEmitter.removeAllListeners(ExternalAPI.SEND_ENDPOINT_TEXT_MESSAGE);
+    eventEmitter.removeAllListeners(ExternalAPI.TOGGLE_SCREEN_SHARE);
+    eventEmitter.removeAllListeners(ExternalAPI.RETRIEVE_PARTICIPANTS_INFO);
+    eventEmitter.removeAllListeners(ExternalAPI.OPEN_CHAT);
+    eventEmitter.removeAllListeners(ExternalAPI.CLOSE_CHAT);
+    eventEmitter.removeAllListeners(ExternalAPI.SEND_CHAT_MESSAGE);
+}
+
 /**
  * Registers for endpoint messages sent on conference data channel.
  *