Android:如何在不更改当前语言环境的情况下获取特定语言环境中的字符串

Question

用例:记录显示给用户的错误消息。

但是，您不希望日志中的消息取决于用户设备的区域设置。 另一方面，您不想仅仅为了您的(技术)日志记录而更改用户设备的区域设置。 这可以实现吗？ 我在 stackoverflow 上找到了几个潜在的解决方案:

• how to get string from different locales in Android?
• Can I access to resources from different locale android?
• android - Get string from default locale using string in specific locale
• 甚至可能是 android - Changing Locale within the app itself

但是，它们都会导致更改我设备的区域设置(直到下一次配置更改)。

无论如何，我目前的解决方法是这样的:

public String getStringInDefaultLocale(int resId) {
    Resources currentResources = getResources();
    AssetManager assets = currentResources.getAssets();
    DisplayMetrics metrics = currentResources.getDisplayMetrics();
    Configuration config = new Configuration(
            currentResources.getConfiguration());
    config.locale = DEFAULT_LOCALE;
    /*
     * Note: This (temporiarily) changes the devices locale! TODO find a
     * better way to get the string in the specific locale
     */
    Resources defaultLocaleResources = new Resources(assets, metrics,
            config);
    String string = defaultLocaleResources.getString(resId);
    // Restore device-specific locale
    new Resources(assets, metrics, currentResources.getConfiguration());
    return string;
}

说实话，我一点也不喜欢这种方法。它效率不高，而且 - 考虑并发性和所有这些 - 它可能会导致“错误”语言环境中的某些 View 。

那么 - 有什么想法吗？也许这可以使用 ResourceBundle 来实现s，就像在标准 Java 中一样？

Answer 1

您可以将其用于 API +17

@NonNull
@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
public static String getStringByLocal(Activity context, int id, String locale) {
    Configuration configuration = new Configuration(context.getResources().getConfiguration());
    configuration.setLocale(new Locale(locale));
    return context.createConfigurationContext(configuration).getResources().getString(id);
}

更新(一):如何支持旧版本。

@NonNull
public static String getStringByLocal(Activity context, int resId, String locale) {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1)
        return getStringByLocalPlus17(context, resId, locale);
    else
        return getStringByLocalBefore17(context, resId, locale);
}

@NonNull
@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
private static String getStringByLocalPlus17(Activity context, int resId, String locale) {
    Configuration configuration = new Configuration(context.getResources().getConfiguration());
    configuration.setLocale(new Locale(locale));
    return context.createConfigurationContext(configuration).getResources().getString(resId);
}

private static String getStringByLocalBefore17(Context context,int resId, String language) {
    Resources currentResources = context.getResources();
    AssetManager assets = currentResources.getAssets();
    DisplayMetrics metrics = currentResources.getDisplayMetrics();
    Configuration config = new Configuration(currentResources.getConfiguration());
    Locale locale = new Locale(language);
    Locale.setDefault(locale);
    config.locale = locale;
/*
 * Note: This (temporarily) changes the devices locale! TODO find a
 * better way to get the string in the specific locale
 */
    Resources defaultLocaleResources = new Resources(assets, metrics, config);
    String string = defaultLocaleResources.getString(resId);
    // Restore device-specific locale
    new Resources(assets, metrics, currentResources.getConfiguration());
    return string;
}

更新(2): Check this article