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Just use this command to set a server address to automatically sync your device time. ( ͡° ͜ʖ ͡°)✧
$ adb shell settings put global ntp_server <new-ntp-server>
I have a Raspberry Pi 3 with Android Things installed on it. But the time is never synchronized...
After googling it, I found this piece of code in NtpTrustedTime.java
public class NtpTrustedTime implements TrustedTime {
...
public static synchronized NtpTrustedTime getInstance(Context context) {
if (sSingleton == null) {
final Resources res = context.getResources();
final ContentResolver resolver = context.getContentResolver();
final String defaultServer = res.getString(
com.android.internal.R.string.config_ntpServer);
final long defaultTimeout = res.getInteger(
com.android.internal.R.integer.config_ntpTimeout);
final String secureServer = Settings.Global.getString(
resolver, Settings.Global.NTP_SERVER);
final long timeout = Settings.Global.getLong(
resolver, Settings.Global.NTP_TIMEOUT, defaultTimeout);
final String server = secureServer != null ? secureServer : defaultServer;
sSingleton = new NtpTrustedTime(server, timeout);
sContext = context;
}
return sSingleton;
}
}
It shows that android tring to get NTP server from:
-
Settings.Global.NTP_SERVER first
-
Then com.android.internal.R.string.config_ntpServer
And the NTP server of my Android Things is time.android.com
, that's why it dose not work (I'm in China...).
Fortunately, it is easy to set settings via adb:
$ adb shell settings put global ntp_server asia.pool.ntp.org
# test
$ adb shell settings get global ntp_server
> asia.pool.ntp.org
🎉 CHEERS
Thank you for this thread.
There is no existing ntp_server setting in LineageOS 20 but can easily be created just by pushing the "put global ntp_server domain" command through adb.
Setting is preserved between reboots and my router logs can confirm that NTP address changed from time.android.com to the chosen NTP server. GPS automatically connects to time.xtracloud.net (Cloudflare) in this ROM.