Time synchronisation on Android devices

Question

I have 100+ android devices on a network. These devices constantly loosing time (time is not accurate +- few hours or sets to default date time 2010 ... 00:00 ) and I would like to synchronise time and date with android NTP. I can't root those devices. These devices are on a network without internet. I believe only one solution is to create exception in our firewall to allow devices to connect to android NTP server??? How can I find this URL. Is it another option so sync date time?

score 2 · Answer 1 · answered Oct 31 '18 at 09:45

2

To get internet time by following code snippet:

public long getInternetTime() {
    SntpClient client = new SntpClient();
    if (client.requestTime("time.nist.gov", 10000)) {
        long time = client.getNtpTime();
        return time;
    }
    else {
        Log.e(TAG, "get internet time failed");
    }
    return -1;
}

answered Oct 31 '18 at 09:45

aolphn

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I'm not a Android developer. I need to sync time with internet time (default android NTP) but i can't see witch server is in use. Because my device is't rooted – Klapsius Oct 31 '18 at 09:57
Did you must use default android ntp server? – aolphn Oct 31 '18 at 09:59
Check this question https://stackoverflow.com/questions/14381005/is-android-using-ntp-to-sync-time – aolphn Oct 31 '18 at 10:00
I can't root my devices so yes I have to use default NTP – Klapsius Oct 31 '18 at 14:53
In my answer,you can use ntp without need root your device – aolphn Oct 31 '18 at 14:54

Time synchronisation on Android devices

1 Answers1