Android7.1修改NTP地址_android7.1 修改当前默认的ntp服务器url

说明

    android系统默认的请求更新系统时间的服务器是谷歌的时间服务器，国内谷歌服务器用不了，那么我们想要更新系统时间，就需要更改NTP服务器地址为阿里的。

实现

zhoujy@TP:~/data/android/sc826_cn_01_00/msm_8953_git/frameworks$ git show 287e1af59248e9a8b45c7b11b1a13ceb55695661
commit 287e1af59248e9a8b45c7b11b1a13ceb55695661
Author: zhoujinyan <zhoujy@ibumobile.com>
Date:   Sun Jun 28 19:43:06 2020 +0800
 
    [frameworks]修改NTP地址
 
diff --git a/frameworks/base/core/java/android/util/NtpTrustedTime.java b/frameworks/base/core/java/android/util/NtpTrustedTime.java
index ed2d3c6..7b822d0 100644
--- a/frameworks/base/core/java/android/util/NtpTrustedTime.java
+++ b/frameworks/base/core/java/android/util/NtpTrustedTime.java
@@ -99,7 +99,7 @@ public class NtpTrustedTime implements TrustedTime {
         }
 
 
-        if (LOGD) Log.d(TAG, "forceRefresh() from cache miss");
+        if (LOGD) Log.d(TAG, "forceRefresh() from cache miss mTimeout = " + mTimeout);
         final SntpClient client = new SntpClient();
         if (client.requestTime(mServer, (int) mTimeout)) {
             mHasCache = true;
@@ -108,6 +108,16 @@ public class NtpTrustedTime implements TrustedTime {
             mCachedNtpCertainty = client.getRoundTripTime() / 2;
             return true;
         } else {
+           Log.d(TAG, "mServer = " + mServer + " false");
+           String mServerSecond = "3.cn.pool.ntp.org";
+           if (client.requestTime(mServerSecond, (int) mTimeout)) { 
+               mHasCache = true;
+               mCachedNtpTime = client.getNtpTime();
+                mCachedNtpElapsedRealtime = client.getNtpTimeReference();
+                mCachedNtpCertainty = client.getRoundTripTime() / 2;
+               return true;
+           }
+            Log.d(TAG, "mServerSecond = " + mServerSecond + " false");
             return false;
         }
     }
diff --git a/frameworks/base/core/res/res/values/config.xml b/frameworks/base/core/res/res/values/config.xml
index 528d037..5231937e 100755
--- a/frameworks/base/core/res/res/values/config.xml
+++ b/frameworks/base/core/res/res/values/config.xml
@@ -1701,14 +1701,15 @@
     <bool name="config_actionMenuItemAllCaps">true</bool>
 
     <!-- Remote server that can provide NTP responses. -->
-    <string translatable="false" name="config_ntpServer">2.android.pool.ntp.org</string>
+    <!--<string translatable="false" name="config_ntpServer">2.android.pool.ntp.org</string>-->
+    <string translatable="false" name="config_ntpServer">ntp-sz.chl.la</string>
     <!-- Normal polling frequency in milliseconds -->
     <integer name="config_ntpPollingInterval">86400000</integer>
     <!-- Try-again polling interval in milliseconds, in case the network request failed -->
     <integer name="config_ntpPollingIntervalShorter">60000</integer>
     <!-- Number of times to try again with the shorter interval, before backing
          off until the normal polling interval. A value < 0 indicates infinite. -->
-    <integer name="config_ntpRetry">3</integer>
+    <integer name="config_ntpRetry">-1</integer>
     <!-- If the time difference is greater than this threshold in milliseconds,
          then update the time. -->
     <integer name="config_ntpThreshold">5000</integer>