change my device language byc code but its not reflect in device [duplicate]

Question

This question already has answers here:

Android : Is there any way to change the default language of android to new language? (3 answers)

Closed 8 years ago.

I want to change my device language programmatically and execute below code after if the device language isn't changed

Locale locale=new Locale("de");  //Chinese    
Locale.setDefault(locale);

How can I do that?

Answer 1

Here is a fairly definitive answer to something i feel you may be misunderstanding. The method you are using will only set the language for the application context upon which you set the language configuration. Only your app will run with the new languages settings. A global change will require raised permissions and possibly root access.