From d385f524f00462b863fef2aefa763a5d180db5af Mon Sep 17 00:00:00 2001
From: Jay Aliomer <aaliomer@google.com>
Date: Thu, 21 Nov 2019 10:44:57 -0500
Subject: [PATCH] DarkUIPreferenceController null exception

The DarkUIPreferenceController doesnt need to show dialog in all cases
we added a null check for mFragment

Fixes: 144899194
Test: atest DarkUIPreferenceControllerTest
Change-Id: Ia5ed89bd46f28f4b92d955911223f9157e55c622
(cherry picked from commit c49f266af0f834ef6db1d53fab80ab8fbfcbb382)
---
 .../android/settings/display/DarkUIPreferenceController.java    | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/com/android/settings/display/DarkUIPreferenceController.java b/src/com/android/settings/display/DarkUIPreferenceController.java
index d3d30b50221..b85511d8bd8 100644
--- a/src/com/android/settings/display/DarkUIPreferenceController.java
+++ b/src/com/android/settings/display/DarkUIPreferenceController.java
@@ -100,7 +100,7 @@ public class DarkUIPreferenceController extends TogglePreferenceController imple
 
     private void showDarkModeDialog() {
         final DarkUIInfoDialogFragment frag = new DarkUIInfoDialogFragment();
-        if (mFragment.getFragmentManager() != null) {
+        if (mFragment != null && mFragment.getFragmentManager() != null) {
             frag.show(mFragment.getFragmentManager(), getClass().getName());
         }
     }