Android Open Source - Munin-for-Android I18n Helper

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License

The source code is released under:

GNU General Public License

Java Source Code

package com.chteuchteu.munin.hlpr;
//from   w  ww  . ja va  2s.  c  o m
import android.content.Context;
import android.content.res.Configuration;
import android.content.res.Resources;
import android.util.DisplayMetrics;

import com.chteuchteu.munin.MuninFoo;
import com.chteuchteu.munin.R;

import java.util.Arrays;
import java.util.Locale;

public final class I18nHelper {
  public enum AppLanguage {
    EN("en", R.string.lang_english), FR("fr", R.string.lang_german), DE("de", R.string.lang_german), RU("ru", R.string.lang_russian);

    public String langCode;
    public int localeNameRes;

    AppLanguage(String langCode, int localeNameRes) {
      this.langCode = langCode; this.localeNameRes = localeNameRes;
    }
    public static AppLanguage defaultLang() { return AppLanguage.EN; }

    /**
     * get AppLanguage enum value from langCode.
     *  If not found, returns the default language (EN)
     */
    public static AppLanguage get(String langCode) {
      for (AppLanguage lang : AppLanguage.values()) {
        if (lang.langCode.equals(langCode))
          return lang;
      }

      return defaultLang();
    }
    public int getIndex() {
      return Arrays.asList(AppLanguage.values()).indexOf(this);
    }
  }

  public static boolean isLanguageSupported(String languageCode) {
    for (AppLanguage lang : AppLanguage.values()) {
      if (lang.langCode.equals(languageCode))
        return true;
    }

    return false;
  }

  public static void loadLanguage(Context context, MuninFoo muninFoo) { loadLanguage(context, muninFoo, false); }
  /**
   * Load language according to preferences, if set. If not : lang is
   *  already set according to device locale.
   * @param context Activity context
   * @param forceLoad Force language load (after language change)
   */
  public static void loadLanguage(Context context, MuninFoo muninFoo, boolean forceLoad) {
    String lang = Util.getPref(context, Util.PrefKeys.Lang);

    if (!lang.equals("")) {
      if (!muninFoo.languageLoaded || forceLoad) {
        if (!isLanguageSupported(lang))
          lang = "en";

        Resources res = context.getApplicationContext().getResources();
        DisplayMetrics dm = res.getDisplayMetrics();
        Configuration conf = res.getConfiguration();
        conf.locale = new Locale(lang);
        res.updateConfiguration(conf, dm);

        muninFoo.languageLoaded = true;
      }
    }
    // else: lang set according to device locale
  }
}

Java Source Code List

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