How can I change the language of a phone using Kotlin?

CodePudding user response：

It's impossible to do it programmatically. The best you can do is to open Locale Settings screen like this:

startActivityForResult(new Intent(Settings.ACTION_LOCALE_SETTINGS), 0);

CodePudding user response：

Yes, it is possible to change the language of an Android device through code using the Kotlin programming language.

You can use the android.content.res.Configuration class to change the device's locale, which controls the language and region settings of the device.

Here is an example of how to change the language of an Android device to Spanish:

val config = Configuration()
config.setLocale(Locale("es"))
baseContext.resources.updateConfiguration(config, baseContext.resources.displayMetrics)

You will need to call this code from an Activity or Fragment and call recreate() method after it, this will force the activity to restart, updating the language.

Here is an example:

val config = Configuration()
config.setLocale(Locale("es"))
baseContext.resources.updateConfiguration(config, baseContext.resources.displayMetrics)
recreate()

Please note that changing the language of the device will change the language of the entire device, not just the app. This can be a big change for the user, so it's a good idea to prompt the user before making this change, and also make sure that your app's resources are translated to the new language. Also, the user can undo it by going to the device settings.

Another important thing is that if you want to change the language while the app is running, you need to call the above methods in all activities, if not, the language change will not be reflected on the other activities.