From 92cf21583dc0435e9d1e8a0db8da75f8e8d14b67 Mon Sep 17 00:00:00 2001
From: Bolun Shan <bolun.xa.shan@sony.com>
Date: Thu, 12 Oct 2017 15:17:08 +0800
Subject: [PATCH] DO NOT MERGE: Keep access point list updated once in short
 time

The function onAccessPointsChanged will be called many times
and access points will be updated many times in 300ms. So check
if the same event exists before calling postDelayed.

Bug: 68230819
Test: Manual test
Change-Id: Id098e1b77c28b62a5495c3369ed950531e59dba2
---
 src/com/android/settings/wifi/WifiSettings.java | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/com/android/settings/wifi/WifiSettings.java b/src/com/android/settings/wifi/WifiSettings.java
index 190af4d2e42..d61b71c77d5 100644
--- a/src/com/android/settings/wifi/WifiSettings.java
+++ b/src/com/android/settings/wifi/WifiSettings.java
@@ -37,6 +37,7 @@ import android.net.wifi.WifiManager;
 import android.net.wifi.WpsInfo;
 import android.nfc.NfcAdapter;
 import android.os.Bundle;
+import android.os.Handler;
 import android.os.HandlerThread;
 import android.os.PowerManager;
 import android.os.Process;
@@ -703,6 +704,10 @@ public class WifiSettings extends RestrictedSettingsFragment
     private void updateAccessPointsDelayed() {
         // Safeguard from some delayed event handling
         if (getActivity() != null && !mIsRestricted && mWifiManager.isWifiEnabled()) {
+            Handler handler = getView().getHandler();
+            if (handler != null && handler.hasCallbacks(mUpdateAccessPointsRunnable)) {
+                return;
+            }
             setProgressBarVisible(true);
             getView().postDelayed(mUpdateAccessPointsRunnable, 300 /* delay milliseconds */);
         }