From 5ade3e1fef2ca18164efd6656f95004f0b733e73 Mon Sep 17 00:00:00 2001
From: Sihua Ma <sihua@google.com>
Date: Fri, 31 Mar 2023 17:06:43 -0700
Subject: [PATCH] Attempt to fix concurrent modification issue in
 QuickstepWidgetHolder

Test: N/A
Bug: 275100497
Change-Id: I5db18ff38aa280c2a9957c457ac9565570933513
---
 .../android/launcher3/uioverrides/QuickstepWidgetHolder.java  | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/quickstep/src/com/android/launcher3/uioverrides/QuickstepWidgetHolder.java b/quickstep/src/com/android/launcher3/uioverrides/QuickstepWidgetHolder.java
index b318100205..91cefb5597 100644
--- a/quickstep/src/com/android/launcher3/uioverrides/QuickstepWidgetHolder.java
+++ b/quickstep/src/com/android/launcher3/uioverrides/QuickstepWidgetHolder.java
@@ -197,7 +197,7 @@ public final class QuickstepWidgetHolder extends LauncherWidgetHolder {
     @Override
     public void addProviderChangeListener(
             @NonNull LauncherWidgetHolder.ProviderChangedListener listener) {
-        mProviderChangedListeners.add(listener);
+        MAIN_EXECUTOR.execute(() -> mProviderChangedListeners.add(listener));
     }
 
     /**
@@ -207,7 +207,7 @@ public final class QuickstepWidgetHolder extends LauncherWidgetHolder {
     @Override
     public void removeProviderChangeListener(
             LauncherWidgetHolder.ProviderChangedListener listener) {
-        mProviderChangedListeners.remove(listener);
+        MAIN_EXECUTOR.execute(() -> mProviderChangedListeners.remove(listener));
     }
 
     /**