From d0d495f5083b5acf93a3de9b28e87d7dcad8f6f4 Mon Sep 17 00:00:00 2001
From: Sunny Goyal <sunnygoyal@google.com>
Date: Wed, 7 Sep 2016 14:39:41 -0700
Subject: [PATCH] Preventing concurrentmodification exception when dragging a
 icon with shortcuts from inside a folder

When dragging the icon, DeepShortcutContainer removes itself as a
dragListener causing the exception

Change-Id: Ifb2b4a3045caa54aa0b6a9b525055ffdcfaa04a6
---
 src/com/android/launcher3/dragndrop/DragController.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/com/android/launcher3/dragndrop/DragController.java b/src/com/android/launcher3/dragndrop/DragController.java
index b67d3b8bc7..29e33e944d 100644
--- a/src/com/android/launcher3/dragndrop/DragController.java
+++ b/src/com/android/launcher3/dragndrop/DragController.java
@@ -260,7 +260,7 @@ public class DragController implements DragDriver.EventListener, TouchController
         dragView.show(mMotionDownX, mMotionDownY);
         mDistanceSinceScroll = 0;
 
-        for (DragListener listener : mListeners) {
+        for (DragListener listener : new ArrayList<>(mListeners)) {
             listener.onDragStart(mDragObject, mOptions);
         }