From 2a1792ea49cbcb14af55a4b0c14c26b719c03343 Mon Sep 17 00:00:00 2001
From: Winson Chung <winsonc@google.com>
Date: Sat, 19 Feb 2022 01:00:42 +0000
Subject: [PATCH] Skip updating nav bar if it was destroyed

- Since device config updates are posted, there can be
  a queued update after we remove the nav bar, which
  will reference a null bar

Bug: 210713030
Test: Haven't been able to trigger the actual NPE
Change-Id: I05f1cb6e2a97808ad05b5aaaa046689df04995e1
---
 .../src/com/android/systemui/navigationbar/NavigationBar.java | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/packages/SystemUI/src/com/android/systemui/navigationbar/NavigationBar.java b/packages/SystemUI/src/com/android/systemui/navigationbar/NavigationBar.java
index 8b39e5c24ded0..a242df38b62fc 100644
--- a/packages/SystemUI/src/com/android/systemui/navigationbar/NavigationBar.java
+++ b/packages/SystemUI/src/com/android/systemui/navigationbar/NavigationBar.java
@@ -440,7 +440,9 @@ public class NavigationBar implements View.OnAttachStateChangeListener,
                         mHomeButtonLongPressDurationMs = Optional.of(
                             properties.getLong(HOME_BUTTON_LONG_PRESS_DURATION_MS, 0)
                         ).filter(duration -> duration != 0);
-                        reconfigureHomeLongClick();
+                        if (mNavigationBarView != null) {
+                            reconfigureHomeLongClick();
+                        }
                     }
                 }
             };