Save language chosen by user, Android

Question

How can I change default string.xml? I can change my app to five different languages, but whenever I close the app and reopen it. It goes back to default English.

Is

Answer 1

You can try this:

To Change:

public void changeLanguage(String language) {
    locale = new Locale(language);
    saveLocale(language);
    Locale.setDefault(locale);
    conf.locale = locale;
    getBaseContext().getResources().updateConfiguration(conf, null);
    updateText();
}

To Save:

    public void saveLocale(String language) {
    SharedPreferences sharedPreferences = getSharedPreferences("com.example.myapp.PREFERENCES", Activity.MODE_PRIVATE);
    SharedPreferences.Editor editor = sharedPreferences.edit();
    editor.putString("USER_LANGUAGE", language);
    editor.commit();
}

To Update:

    private void updateText() {
    btn_chat.setText(R.string.live_chat);
}

To Load:

public void LoadLanguage(){
    SharedPreferences shp = getSharedPreferences(
            "com.example.myapp.PREFERENCES",Context.MODE_PRIVATE);
    String language = shp.getString("USER_LANGUAGE","");
    Locale locale = new Locale(language);
    Locale.setDefault(locale);
    Configuration config = new Configuration();
    config.locale = locale;
    getResources().updateConfiguration(config, getResources().getDisplayMetrics());
}

In MainActivity you can check the default language that app is using:

language = getResources().getString(R.string.lang);

Then if the language is the language you want by check with statement, you should perform updateText() function:

if (language.equals("zh")) {
        btn_lang.setText(R.string.someName);
        updateText();
    }

Do not forget to perform the LoadLanguage() in MainActivity to Load the language that user saved.