Set Android Things time zone

Question

After installing Android Things on a Raspberry Pi, time is not correct. My time zone is GMT+2, and using date +%Z I see RPi's time zone is GMT. How can I set time zone?

Take a look at [this](https://stackoverflow.com/q/41342845/6950238) question and answers. — Andrii Omelchenko, Jun 14 '17 at 07:14
`adb shell settings put global time_zone Europe/Madrid` didn't work? — Andrii Omelchenko, Jun 14 '17 at 15:04
and `AlarmManager am = (AlarmManager) getContext().getSystemService(Context.ALARM_SERVICE); am.setTimeZone("Europe/Madrid");` from `apk` with `` in `AndroidManifest.xml`? — Andrii Omelchenko, Jun 14 '17 at 15:11
Yes, it worked :) You should post an answer, and I'll select as the correct one — Sergio Viudes, Jun 16 '17 at 11:16

Andrii Omelchenko · Accepted Answer · 2018-06-26T11:23:04.780

8

Update (based on Michal Harakal's comment):

Since Developer Preview 6 TimeManager class provides access to device settings related to time (NB! TimeManager requires <uses-permission android:name="com.google.android.things.permission.SET_TIME" />). You can use .setTimeZone() method of for time zone set:

private void setupTimeZone(String timeZoneName) {
    TimeManager timeManager = TimeManager.getInstance();
    timeManager.setTimeZone(timeZoneName);
}

where timeZoneName is one of tz database time zones string, e.g. for Kyiv (GMT +2, DST +3):

setupTimeZone("Europe/Kiev");

Original answer:

You can set it programmatically from Application via AlarmManager.setTimeZone() like in this answer of Synesso:

AlarmManager am = (AlarmManager)getContext().getSystemService(Context.ALARM_SERVICE);
am.setTimeZone("Europe/Madrid");

with <uses-permission android:name="android.permission.SET_TIME_ZONE"/> permission in AndroidManifest.xml file.

List of TimeZone names.

edited Jun 26 '18 at 11:23

answered Jun 16 '17 at 12:06

Andrii Omelchenko

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This is not working on Android Things DevPreview 5.1 "setTimeZone: Neither user 10031 nor current process has android.permission.SET_TIME_ZONE" eventough I added the permission in the manifest. Any idea? – MRodrigues Oct 20 '17 at 16:46
@MRodrigues Did you reboot device? – Andrii Omelchenko Oct 20 '17 at 19:38
Yeah, also did tried that. Next execution after boot same error . – MRodrigues Oct 23 '17 at 07:38
I've the same problem ... actually i can't set a timezone on Android Things API 27 application ! Is that possible ? – cicciosgamino Feb 26 '18 at 16:54
2

@cicciosgamino with DP6 has Google Introduced a new API for setting time. Have a look on TimeManager https://developer.android.com/things/reference/com/google/android/things/device/TimeManager.html – Michal Harakal Mar 26 '18 at 11:54
How to import TimeManager class – Divyanshu Kushwaha Aug 10 '18 at 06:29
@DivyanshuKushwaha Just add `import com.google.android.things.device.TimeManager;` to your class, but Android Studio do this automatically by defaults. – Andrii Omelchenko Aug 10 '18 at 07:54

score 0 · Answer 2 · answered Sep 26 '18 at 06:52

I use these codes

TimeManager timeManager = TimeManager.getInstance(); 
timeManager.setTimeFormat(TimeManager.FORMAT_24);
// Set time zone to Eastern Standard Time
//timeManager.setTimeZone("America/New_York");
timeManager.setTimeZone("GMT");
calendar.setTime(date);
long timeStamp = calendar.getTimeInMillis();
timeManager.setTime(timeStamp);

with this permission : com.google.android.things.permission.SET_TIME

Set Android Things time zone

2 Answers2

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