From 5ea1c3ecd021854843bbc092d0bd27b784c833a0 Mon Sep 17 00:00:00 2001
From: Tomasz Wasilczyk <twasilczyk@google.com>
Date: Tue, 19 Jan 2021 11:58:43 -0800
Subject: [PATCH] Don't crash SystemUI on missing WiFi

Bug: 177921585
Test: flash tcu_host device and check if if boots
Change-Id: Ib34e0841d4bf30dcb67c225a0d5c1e10ace729e2
---
 .../systemui/statusbar/policy/NetworkControllerImpl.java      | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/policy/NetworkControllerImpl.java b/packages/SystemUI/src/com/android/systemui/statusbar/policy/NetworkControllerImpl.java
index 92d013eeda8e2..f1ccde771c545 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/policy/NetworkControllerImpl.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/policy/NetworkControllerImpl.java
@@ -294,7 +294,9 @@ public class NetworkControllerImpl extends BroadcastReceiver
             }
         };
 
-        mWifiManager.registerScanResultsCallback(mReceiverHandler::post, scanResultsCallback);
+        if (mWifiManager != null) {
+            mWifiManager.registerScanResultsCallback(mReceiverHandler::post, scanResultsCallback);
+        }
 
         ConnectivityManager.NetworkCallback callback = new ConnectivityManager.NetworkCallback(){
             private Network mLastNetwork;