CountryPicker is a custom UIPickerView subclass that provides an iOS control allowing a user to select a country from a list. It can optionally display a flag next to each country name, and the library includes a set of 249 public domain flag images from https://github.com/koppi/iso-country-flags-svg-collection that have been renamed to work with the library. Note that the list of countries is based on the ISO 3166 country code standard (http://en.wikipedia.org/wiki/ISO_3166-1). This list excludes certain smaller countries, regarding them as part of a larger state. For example, England, Scotland, Wales and Northern Ireland are lumped together as Great Britain. For most purposes this is fine as it matches the convention used for locales, but if you need to specify additional countries, you can subclass and modify the countires list as described under "Subclassing" below.