Change Device language via ADB

Question

I want to change language via ADB. I try:

adb shell setprop persist.sys.language fr;setprop persist.sys.country CA;stop;sleep 5;start

but I

Answer 1

There is few solutions.It works for me.

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1.

adb shell am start -a android.settings.LOCALE_SETTINGS (You could see the language menu, then choose language by appium)

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2.

download adbchangelanguage on google store

adb shell pm grant net.sanapeli.adbchangelanguage

android.permission.CHANGE_CONFIGURATION

adb shell am start -n net.sanapeli.adbchangelanguage/.AdbChangeLanguage -e language zh -e country TW

https://gist.github.com/douglasselph/b9998e69998759c6cceec1df1aa96ac5

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3.

using appium then set desired capabilities (language and locale) http://appium.io/docs/en/writing-running-appium/caps/

Answer 2

Try this

adb shell "su -c 'setprop persist.sys.language fr; setprop persist.sys.country CA; stop; sleep 5; start'

You need a rooted device.

Answer 3

You cant do that with the adb on your device. Your adb outside the device, I mean on your computer connected with usb, can change it with passing a permission before changing the language.

On your device directly, you need a rooted device.

Answer 4

On Emulator: When changed language manually, it stopped working and had to do wipe data of Emulator in AVD manager to make it work again.

And the script used:

adb shell "su 0 setprop persist.sys.locale ja";adb shell "su 0 setprop ctl.restart zygote"

May add ;sleep 20 in the end if some commands in script below this command depend on device to be ready.

Answer 5

You can change the locale/language for testing purposes without rooting the device, also on newer (4.2+) devices. You have to create an application that changes the device locale. Or, you can use a helper app, e.g. ADB Change Language.

Next, on 4.2+ devices, you have to use grant the app CHANGE_CONFIGURATION permission via adb, adb shell pm grant <package_name> android.permission.CHANGE_CONFIGURATION.

Finally, you can use adb commands (launch activity) to switch locale.