From f2db627a7c282de6489d58dce397cb18d95e8f77 Mon Sep 17 00:00:00 2001
From: Vincent Wang <firewall@google.com>
Date: Wed, 1 Mar 2023 06:57:14 +0000
Subject: [PATCH] Fix UDFPS enrolling crash

Bug: b/271208595
Test: 1. adb root
      2. adb shell setprop sys.fflag.override.settings_biometrics2_enrollment true
      3. Record fingerprint
      4. Check setting work normally
Change-Id: I69cc50cd677e80a57bb430a5a295c46b519d7755
---
 .../settings/biometrics2/ui/widget/UdfpsEnrollView.java       | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/com/android/settings/biometrics2/ui/widget/UdfpsEnrollView.java b/src/com/android/settings/biometrics2/ui/widget/UdfpsEnrollView.java
index a0d9b253fb3..518397af5ed 100644
--- a/src/com/android/settings/biometrics2/ui/widget/UdfpsEnrollView.java
+++ b/src/com/android/settings/biometrics2/ui/widget/UdfpsEnrollView.java
@@ -226,6 +226,10 @@ public class UdfpsEnrollView extends FrameLayout {
         }
 
         DisplayInfo displayInfo = new DisplayInfo();
+        if (getDisplay() == null) {
+            android.util.Log.e(TAG, "Can not get display");
+            return;
+        }
         getDisplay().getDisplayInfo(displayInfo);
         Rect udfpsBounds = mSensorProperties.getLocation().getRect();
         float scaleFactor = mUdfpsUtils.getScaleFactor(displayInfo);