Resources.getString(id, formatArgs)的源代码（Context.getString(id, formatArgs)的方法）如下所示：

@NonNull
public String getString(@StringRes int id, Object... formatArgs) throws NotFoundException {
    final String raw = getString(id);
    return String.format(mResourcesImpl.getConfiguration().getLocales().get(0), raw,
            formatArgs);
}

字符串
因此，你可以这样做：

val resources = context.resources
val rawLabels = resources.getStringArray(R.array.distance_rating_labels)
val currentLocale = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N)
    resources.configuration.locales.get(0)
else
    resources.configuration.locale
val distance = String.format(currentLocale, rawLabels[index], arg)

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