Change timezone in android programmatically

Question

I wanted to change timezone in android programmatically like to set timezone as "America/Los_Angeles". How can I do this. How can this be possible by using id's.

score 19 · Accepted Answer · answered Dec 18 '14 at 06:16

19

In your AndroidManifest.xml

<uses-permission android:name="android.permission.SET_TIME_ZONE"/>

In your source:

AlarmManager am = (AlarmManager) getContext().getSystemService(Context.ALARM_SERVICE);
am.setTimeZone("America/Los_Angeles");

answered Dec 18 '14 at 06:16

Synesso

36,000
33
126
200

1

I want to change the time zone locally for 3 different time zones. 1. EST(Eastern Standard Time). 2. CST(Central Standard Time). 3. AST(Atlantic Standard Time). From where I can select the key for the corresponding time zones?. – Nithinjith Apr 05 '17 at 09:40
Call `TimeZone.getAvailableIDs()` to get the list of known timezones for your system. – Synesso Aug 17 '17 at 00:10
7

This permission is only allowed for system apps. – HHLV Mar 08 '18 at 09:59
2

on android api 26 and 27 receive this error: setTimeZone: Neither user 10087 nor current process has android.permission.SET_TIME_ZONE. – Omid Ziyaee Dec 04 '18 at 08:50
change your code in AndroidManifest.xml to – Ferdiyan Syah Jul 30 '19 at 09:27
1

I have the same @OmidZiyaee error. Have you found a solution? – Alessandro Caliaro Sep 08 '20 at 07:31

score 5 · Answer 2 · answered Mar 19 '14 at 16:04

5

If this is on a simulator or a device that you have root on, you could run

adb shell "su -c 'setprop persist.sys.timezone America/Los_Angeles; stop; sleep 5; start'"

answered Mar 19 '14 at 16:04

Reck

6,922
2
19
24

Exactly what I was looking for. Thanks – David Refoua Jan 13 '18 at 03:52

score 4 · Answer 3 · answered Oct 17 '12 at 07:31

Abhishek's code simply defines a Calendar instance with a specific format to be used in the app, so that will not work.

It is not possible to change the phone's timezone programmatically. You could redirect the user to the appropriate settings, however:

startActivity(new Intent(android.provider.Settings.ACTION_DATE_SETTINGS));

score 4 · Answer 4 · edited May 23 '17 at 12:09

4

Calendar calendar = Calendar.getInstance();       
SimpleDateFormat sdf = new SimpleDateFormat("dd-MMM-yyyy hh:mm:ss z");
sdf.setTimeZone(TimeZone.getTimeZone("America/Los_Angeles"));
System.out.println(sdf.format(calendar.getTime()));

Source

edited May 23 '17 at 12:09

Community

1
1

answered Mar 06 '12 at 02:48

Abhishek Chanda

2,426
6
30
59

3

That source is the answer to a different question and is not sufficient in this case. – MarchingHome Oct 17 '12 at 07:32
1

Thanks. This answer somehow saved my life, because I kept set time zone on calendar instance only but not SimpleDateFormat, thats why I cannot get my shifted time anyway. I am at zone +8 for example, but I want my app display time from zone -7, this is what I want. Change it "programmatically". Voted up. – elliotching May 26 '19 at 14:26

score -1 · Answer 5 · answered Nov 11 '21 at 21:14

-1

You should have system signatures for setting timezones. if you are not manifacturer for your device may be you can contact them and ask for keystore files. after that you can sign your app as system with keystore file.

answered Nov 11 '21 at 21:14

YusufY

1
1

1

Your answer could be improved with additional supporting information. Please [edit] to add further details, such as citations or documentation, so that others can confirm that your answer is correct. You can find more information on how to write good answers [in the help center](/help/how-to-answer). – Community Nov 12 '21 at 03:50
This does not provide an answer to the question. Once you have sufficient [reputation](https://stackoverflow.com/help/whats-reputation) you will be able to [comment on any post](https://stackoverflow.com/help/privileges/comment); instead, [provide answers that don't require clarification from the asker](https://meta.stackexchange.com/questions/214173/why-do-i-need-50-reputation-to-comment-what-can-i-do-instead). - [From Review](/review/late-answers/30319186) – mochadwi Nov 13 '21 at 13:04

Change timezone in android programmatically

5 Answers5

Linked