LocaleUtils change application & system locale of resources on the fly

example.java

    void changeApplicationLanguage(String code){
        updateContextLocale(mBaseContext, getLocale(code)); //change application language
        updateResourceLocale(Resources.getSystem(),getLocale(code)); //change system resources
    }

LocaleUtils.java

package uz.uza.news.utils;

import android.content.Context;
import android.content.res.Configuration;
import android.content.res.Resources;
import android.os.Build;

import java.util.Locale;

public final class LocaleUtils {


    public static Configuration updateContextLocale(Context context, Locale locale){
        final Resources resources = context.getResources();
        return updateResourceLocale(resources, locale, resources.getConfiguration());
    }

    public static Configuration updateResourceLocale(Resources resources, Locale locale){
        return updateResourceLocale(resources, locale, resources.getConfiguration());
    }

    public static Configuration updateResourceLocale(Resources resources, Locale locale,
                                                     Configuration configuration){
        if(locale == null){
            throw new IllegalArgumentException("Application language cannot be null");
        }

        Locale.setDefault(locale);
        final Configuration newConfiguration = new Configuration(configuration);
        newConfiguration.locale = locale;

        // if api allows update layout direction let's do it
        if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
            newConfiguration.setLayoutDirection(newConfiguration.locale);
        }

        resources.updateConfiguration(newConfiguration, resources.getDisplayMetrics());

        return newConfiguration;
    }

}