From 85f6fb713feb258197f17a86c45874d542194b71 Mon Sep 17 00:00:00 2001
From: Charles Chen <clchen@google.com>
Date: Fri, 28 Aug 2009 11:32:23 -0700
Subject: [PATCH] Fixing bug 2086021. AccessiblityService could sometimes get a
 null pointer exception if multiple accessibility services are running and
 there are several events all happening within a short period of time.

---
 .../android/accessibilityservice/AccessibilityService.java  | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/core/java/android/accessibilityservice/AccessibilityService.java b/core/java/android/accessibilityservice/AccessibilityService.java
index 79bd6e7f55b1c..8c422a2280cfc 100644
--- a/core/java/android/accessibilityservice/AccessibilityService.java
+++ b/core/java/android/accessibilityservice/AccessibilityService.java
@@ -211,8 +211,10 @@ public abstract class AccessibilityService extends Service {
             switch (message.what) {
                 case DO_ON_ACCESSIBILITY_EVENT :
                     AccessibilityEvent event = (AccessibilityEvent) message.obj;
-                    mTarget.onAccessibilityEvent(event);
-                    event.recycle();
+                    if (event != null){
+                      mTarget.onAccessibilityEvent(event);
+                      event.recycle();
+                    }
                     return;
                 case DO_ON_INTERRUPT :
                     mTarget.onInterrupt();