From c26ab751484d52100c4873b1fc306c2f8fa2154e Mon Sep 17 00:00:00 2001
From: Lucas Dupin <dupin@google.com>
Date: Mon, 13 May 2019 13:49:17 -0700
Subject: [PATCH] Ignore motion event of invalid pointer

Test: swipe up with multiple fingers
Fixes: 132635371
Change-Id: I27fbb193affb1f073c3feb294ba51ad6e74ac4f1
---
 .../src/com/android/keyguard/KeyguardSecurityContainer.java     | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/SystemUI/src/com/android/keyguard/KeyguardSecurityContainer.java b/packages/SystemUI/src/com/android/keyguard/KeyguardSecurityContainer.java
index d051defc1f252..cd0019c5e92bf 100644
--- a/packages/SystemUI/src/com/android/keyguard/KeyguardSecurityContainer.java
+++ b/packages/SystemUI/src/com/android/keyguard/KeyguardSecurityContainer.java
@@ -180,7 +180,7 @@ public class KeyguardSecurityContainer extends FrameLayout implements KeyguardSe
                 }
                 int index = event.findPointerIndex(mActivePointerId);
                 int touchSlop = mViewConfiguration.getScaledTouchSlop();
-                if (mCurrentSecurityView != null
+                if (mCurrentSecurityView != null && index != -1
                         && mStartTouchY - event.getY(index) > touchSlop) {
                     mIsDragging = true;
                     return true;