From fb3ebf8dc70e58b639cef297c687b7ce52dbdbec Mon Sep 17 00:00:00 2001
From: Zaiyue Xue <xuezaiyue@google.com>
Date: Thu, 25 Aug 2022 13:41:24 +0800
Subject: [PATCH] Fix b/243746796 Crash when mouse hangs over an empty battery
 chart

Bug: 243746796
Fix: 243746796
Test: manual
Change-Id: I3e595c96a55f1114b50ed5ed8e49e962cc90cbde
Merged-In: I3e595c96a55f1114b50ed5ed8e49e962cc90cbde
---
 .../settings/fuelgauge/batteryusage/BatteryChartView.java      | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/com/android/settings/fuelgauge/batteryusage/BatteryChartView.java b/src/com/android/settings/fuelgauge/batteryusage/BatteryChartView.java
index e668b37c24e..cfdd851a644 100644
--- a/src/com/android/settings/fuelgauge/batteryusage/BatteryChartView.java
+++ b/src/com/android/settings/fuelgauge/batteryusage/BatteryChartView.java
@@ -595,6 +595,9 @@ public class BatteryChartView extends AppCompatImageView implements View.OnClick
 
     // Searches the corresponding trapezoid index from x location.
     private int getTrapezoidIndex(float x) {
+        if (mTrapezoidSlots == null) {
+            return BatteryChartViewModel.SELECTED_INDEX_INVALID;
+        }
         for (int index = 0; index < mTrapezoidSlots.length; index++) {
             final TrapezoidSlot slot = mTrapezoidSlots[index];
             if (x >= slot.mLeft - mTrapezoidHOffset