From ad63aa3dc9fd71df87941720b211ca4ce8e0106f Mon Sep 17 00:00:00 2001
From: Peter Kalauskas <peskal@google.com>
Date: Thu, 2 Sep 2021 11:19:30 -0700
Subject: [PATCH] Only animate user list if there's multiple users

Prevent ArrayIndexOutOfBoundsException from occurring if there are no
child views yet.

Test: Enable keyguard user switcher and reboot several times
Bug: 198642878
Change-Id: I4a70e1bb93652996764a533b2c84241653c007da
Merged-In: I4a70e1bb93652996764a533b2c84241653c007da
(cherry picked from commit 54c8099b3e6a570b28f52d9980a0039d9ffaa527)
---
 .../systemui/statusbar/policy/KeyguardUserSwitcherListView.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/policy/KeyguardUserSwitcherListView.java b/packages/SystemUI/src/com/android/systemui/statusbar/policy/KeyguardUserSwitcherListView.java
index 20b66f03192e8..cd8894cae684d 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/policy/KeyguardUserSwitcherListView.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/policy/KeyguardUserSwitcherListView.java
@@ -103,7 +103,7 @@ public class KeyguardUserSwitcherListView extends AlphaOptimizedLinearLayout {
             }
         }
 
-        if (animate) {
+        if (animate && userItemViews.length > 1) {
             // AnimationUtils will immediately hide/show the first item in the array. Since the
             // first view is the current user, we want to manage its visibility separately.
             // Set first item to null so AnimationUtils ignores it.