From 08806754141f0c5792f1cd01e7bf5cd7de12453f Mon Sep 17 00:00:00 2001
From: Bonian Chen <bonianchen@google.com>
Date: Mon, 22 Mar 2021 17:09:00 +0000
Subject: [PATCH] [Settings] Fix divide by zero in data usage UI

Data usage UI got divide by zero exception when zero data usage.

Bug: 182822862
Test: local
Change-Id: Ibe57034e7d441e94c0529cb76f1a16665aaacff6
---
 .../android/settings/datausage/ChartDataUsagePreference.java  | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/com/android/settings/datausage/ChartDataUsagePreference.java b/src/com/android/settings/datausage/ChartDataUsagePreference.java
index 6c845a951fa..0577e9c01f3 100644
--- a/src/com/android/settings/datausage/ChartDataUsagePreference.java
+++ b/src/com/android/settings/datausage/ChartDataUsagePreference.java
@@ -174,8 +174,8 @@ public class ChartDataUsagePreference extends Preference {
     @VisibleForTesting
     List<DataUsageSummaryNode> getDensedStatsData(List<NetworkCycleData> usageSummary) {
         final List<DataUsageSummaryNode> dataUsageSummaryNodes = new ArrayList<>();
-        final long overallDataUsage = usageSummary.stream()
-                .mapToLong(NetworkCycleData::getTotalUsage).sum();
+        final long overallDataUsage = Math.max(1L, usageSummary.stream()
+                .mapToLong(NetworkCycleData::getTotalUsage).sum());
         long cumulatedDataUsage = 0L;
         int cumulatedDataUsagePercentage = 0;