About This Project
CountryPicker is a lightweight, easy-to-use iOS library for selecting countries with their respective flags, dial codes, and currency symbols. It provides a clean and intuitive interface for users to select countries in your iOS applications.
Features
- Display countries with flags, country codes, and dial codes
- Search functionality for quickly finding specific countries
- Customizable appearance to match your app's design
- Support for dark mode in iOS 13+
- Option to filter countries based on specific criteria
- Support for SwiftUI integration
Technical Details
CountryPicker is built with Swift and follows the Model-View-Controller (MVC) architecture. It maintains a database of countries with their corresponding flags, dial codes, and currency symbols. The library is distributed via CocoaPods and Swift Package Manager.
// Example Code
import CountryPicker
let countryPicker = CountryPickerController()
countryPicker.delegate = self
countryPicker.displayPhoneNumbers = true
countryPicker.showCountriesList(from: self)
// CountryPicker delegate method
func countryPicker(_ picker: CountryPickerController, didSelectCountry country: Country) {
// Use selected country
let name = country.countryName
let code = country.countryCode
let dialCode = country.dialingCode
}
Challenges & Solutions
One of the key challenges in developing CountryPicker was ensuring the accuracy and completeness of country data, including flags and dial codes. This was addressed by implementing a robust data validation process and regular updates to the country database. Another challenge was optimizing performance for smooth scrolling and searching in the country list, which was solved using efficient data structures and lazy loading techniques.
Outcome
CountryPicker has become one of my most popular open-source projects, with over 300 GitHub stars and numerous implementations in production apps. It has been well-received by the iOS development community for its ease of use, reliability, and extensive customization options.