How to set time zone on Android Things rp3?

Question

I would like to change timezone on AndroidThings device on Raspberry PI3. I have already checked here and here . This last one using adb date somedate works, but after losing power, the date resets itself.

Is there anyway that we could set timezone from Java or running a shell? The required Timezone of the device is received from server.

While trying to achieve the dynamic timezone I found at that I can set timezone permanently trough shell command with root privileges: `setprop persist.sys.timezone "Atlantic/Madeira` — MRodrigues, Oct 23 '17 at 14:39

score 2 · Accepted Answer · answered Dec 06 '17 at 03:41

2

With DP6 you can use the TimeManager API without requesting for the permission in the manifest.

new TimeManager().setTimeZone(String timezone)

answered Dec 06 '17 at 03:41

Keith Leow

56
5

Great need to test that out! – MRodrigues Dec 06 '17 at 11:53
I'm trying this but i get the following error : Calling process requires permission com.google.android.things.permission.CHANGE_TIME – cicciosgamino Feb 27 '18 at 15:51
You need to restart your RPi with the "IOT_LAUNCHER" in the manifest. This permission is only granted on device start. – Keith Leow Mar 01 '18 at 13:14

score 0 · Answer 2 · answered Oct 23 '17 at 15:13

For now on android Things 5.1 Devpreview the only way I found out to be able to change timezone dynamically trough Java is using command shell:

String command = "setprop persist.sys.timezone Atlantic/Madeira". 
try{
    Runtime.getRuntime().exec(command);
}catch(IOException e){
    //Deal with the exception according to your priest teachings
}

You can check new date on adb adb shell date or on runtime by instanciating a Datetime object.

Let me know if you find out a better way!

How to set time zone on Android Things rp3?

2 Answers2