LocaleManager.java

package com.lechucksoftware.proxy.proxysettings.utils;

import android.content.Context;
import android.content.SharedPreferences;
import android.preference.PreferenceManager;

import java.util.Arrays;
import java.util.Collection;
import java.util.Locale;
import java.util.Map;
import java.util.HashMap;

/**
 * Handles any locale-specific logic for the client.
 *
 * @author Sean Owen
 */
public final class LocaleManager
{

    private static final String DEFAULT_TLD = "com";
    private static final String DEFAULT_COUNTRY = "US";
    private static final String DEFAULT_LANGUAGE = "en";

    private static final Collection<String> TRANSLATED_HELP_ASSET_LANGUAGES =
            Arrays.asList("en");
//            Arrays.asList("de", "en", "es", "fr", "it", "ja", "ko", "nl", "pt", "ru", "zh-rCN", "zh-rTW");

    private LocaleManager()
    {
    }

    private static String getSystemCountry()
    {
        Locale locale = Locale.getDefault();
        return locale == null ? DEFAULT_COUNTRY : locale.getCountry();
    }

    private static String getSystemLanguage()
    {
        Locale locale = Locale.getDefault();
        if (locale == null)
        {
            return DEFAULT_LANGUAGE;
        }
        String language = locale.getLanguage();
        // Special case Chinese
        if (Locale.SIMPLIFIED_CHINESE.getLanguage().equals(language))
        {
            return language + "-r" + getSystemCountry();
        }
        return language;
    }

    public static String getTranslatedAssetLanguage()
    {
        String language = getSystemLanguage();
        return TRANSLATED_HELP_ASSET_LANGUAGES.contains(language) ? language : DEFAULT_LANGUAGE;
    }
}