From fe89325864806599cb1ad42131685e894c2f1c1f Mon Sep 17 00:00:00 2001
From: Rhed Jao <rhedjao@google.com>
Date: Thu, 7 Mar 2019 19:24:34 +0800
Subject: [PATCH] Fix ArrayIndexOutOfBoundsException in A11yCache

Bug: 127761516
Test: atest MediaStoreUiTest#testGetDocumentUri
Change-Id: I55824d4932bc7c430ac7f357237b444bedc71b58
---
 core/java/android/view/accessibility/AccessibilityCache.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/core/java/android/view/accessibility/AccessibilityCache.java b/core/java/android/view/accessibility/AccessibilityCache.java
index 5d59e4205579c..df8690d2eef82 100644
--- a/core/java/android/view/accessibility/AccessibilityCache.java
+++ b/core/java/android/view/accessibility/AccessibilityCache.java
@@ -360,7 +360,7 @@ public class AccessibilityCache {
             }
             clearWindowCache();
             final int nodesForWindowCount = mNodeCache.size();
-            for (int i = 0; i < nodesForWindowCount; i++) {
+            for (int i = nodesForWindowCount - 1; i >= 0; i--) {
                 final int windowId = mNodeCache.keyAt(i);
                 clearNodesForWindowLocked(windowId);
             }