From 0ee615ac6c5ebb3a35913126215453281072d575 Mon Sep 17 00:00:00 2001
From: Max Lv <max.c.lv@gmail.com>
Date: Wed, 16 Dec 2015 17:05:49 +0800
Subject: [PATCH] Ensure the fragment is unregistered onPause

It's quite tricky to avoid getActivity() returns null
http://stackoverflow.com/questions/8914368/getactivity-return-null-in-preferencefragment
---
 src/main/scala/com/github/shadowsocks/ShadowsocksSettings.scala | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/main/scala/com/github/shadowsocks/ShadowsocksSettings.scala b/src/main/scala/com/github/shadowsocks/ShadowsocksSettings.scala
index 7fba788b..46795624 100644
--- a/src/main/scala/com/github/shadowsocks/ShadowsocksSettings.scala
+++ b/src/main/scala/com/github/shadowsocks/ShadowsocksSettings.scala
@@ -118,6 +118,7 @@ class ShadowsocksSettings extends PreferenceFragment with OnSharedPreferenceChan
 
   override def onPause {
     super.onPause()
+    ShadowsocksApplication.settings.unregisterOnSharedPreferenceChangeListener(this)
   }
 
   def onSharedPreferenceChanged(sharedPreferences: SharedPreferences, key: String) = key match {