From 1436f53014e439013aa0bb3bec13c2b4ca5908ca Mon Sep 17 00:00:00 2001
From: Dave Mankoff <mankoff@google.com>
Date: Thu, 9 May 2019 18:39:45 -0400
Subject: [PATCH] Fix NPE when unlocking with TalkBack on.

Change-Id: I58d2dae12786d007165934bbbbdeed5a4b4e4cd4
Bug: 130256776
Test: manual.
---
 .../src/com/android/systemui/classifier/ClassifierData.java     | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/SystemUI/src/com/android/systemui/classifier/ClassifierData.java b/packages/SystemUI/src/com/android/systemui/classifier/ClassifierData.java
index 95e497e6574cd..587abba47932b 100644
--- a/packages/SystemUI/src/com/android/systemui/classifier/ClassifierData.java
+++ b/packages/SystemUI/src/com/android/systemui/classifier/ClassifierData.java
@@ -44,7 +44,7 @@ public class ClassifierData {
         // sampling rate, this creates potentialy false positives.
         if (event.getActionMasked() == MotionEvent.ACTION_MOVE
                 && mCurrentStrokes.size() != 0
-                && event.getEventTimeNano() - mCurrentStrokes.get(0).getLastEventTimeNano()
+                && event.getEventTimeNano() - mCurrentStrokes.valueAt(0).getLastEventTimeNano()
                         < MINIMUM_DT_NANOS - MINIMUM_DT_SMEAR_NANOS) {
             return false;
         }