Dearly I am currently encountering some problems at the time of some classes that vary according to the keyboard that the phone has set, there is some way through the Android studio SDK to change the default keyboard of the phone, at least while it is in use. application or just for the application, thank you already
To change language:
Locale localizacion = new Locale("es", "ES");
Locale.setDefault(localizacion);
Configuration config = new Configuration();
config.locale = localizacion;
getBaseContext().getResources().updateConfiguration(config, getBaseContext().getResources().getDisplayMetrics());
If you need more information look at this article on the Android development page Studio.