From 484087c181cedb5a6418c8c10f81a36eaa49420f Mon Sep 17 00:00:00 2001
From: Jin Dong <jin.x.dong@sony.com>
Date: Fri, 22 Dec 2017 17:49:23 +0800
Subject: [PATCH] Fix memory leak of DataSaverPreference

When DataSaverPreference is shown repeatedly, memory leak happens
since DataSaverBackend.Listener is not removed on onDetached().

TEST: Repeat enter and exit "Data usage" for
several times and check if the count of activity
is not increasing.

Bug: 72581115
Change-Id: Ic4a72de049bb87f1e522fe46dd0fb4bb58ed65a5
---
 src/com/android/settings/datausage/DataSaverPreference.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/com/android/settings/datausage/DataSaverPreference.java b/src/com/android/settings/datausage/DataSaverPreference.java
index 13ef9d7c4f5..f1f648a37a2 100644
--- a/src/com/android/settings/datausage/DataSaverPreference.java
+++ b/src/com/android/settings/datausage/DataSaverPreference.java
@@ -37,7 +37,7 @@ public class DataSaverPreference extends Preference implements DataSaverBackend.
     @Override
     public void onDetached() {
         super.onDetached();
-        mDataSaverBackend.addListener(this);
+        mDataSaverBackend.remListener(this);
     }
 
     @Override