android: programmatically localize a dynamic string

Question

I have a computed String stored in local variable. There is no way I can know the string on before hand, however I know for sure in the end it will be one of the Strings whose translations to different languages are inside the string.xml files.

How can I translate such a dynamic string to the current locale?

For dynamic translation don't put strings into string.xml. string.xml is only used for static resources. Use programming approach here. — AndRSoid
– AndRSoid, Commented Feb 9, 2014 at 9:07

FD_ · Accepted Answer · 2014-02-09 09:22:21Z

4

Although this will take quite long, you could iterate through all the strings, check whether they match, and return the localized version if they do:

public String translatedString(String s)
    //Set the locale to en-us
    Resources standardResources = context.getResources();
    AssetManager assets = standardResources.getAssets();
    DisplayMetrics metrics = standardResources.getDisplayMetrics();
    Configuration config = new Configuration(standardResources.getConfiguration());
    config.locale = Locale.US;
    Resources defaultResources = new Resources(assets, metrics, config);

    //Iterate over string res
    Field fields[] = R.string.class.getFields();
    for (Field field : fields) {
        String value = defaultResources.getString(defaultResources.getIdentifier(field.getName(), "string", this.getPackageName())));
        if (value.equals(s)){
            return getResources().getString(getResources().getIdentifier(field.getName(), "string", this.getPackageName())));
        }

    }

    return null;
}

answered Feb 9, 2014 at 9:22

FD_

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2 Comments

spartygw Over a year ago

Very useful! One note: setting config.locale is depracated now. Use config.setLocale(Locale);

spartygw Over a year ago

Also, Resourcesconstructor is depracated and you no longer need Assets or DisplayMetrics. Use Context::createConfigurationContext

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