CurrencyConvertor 💱

What is this App All About

CurrencyConvertor is a user-friendly and efficient currency conversion app built with SwiftUI. It allows users to quickly convert amounts between a wide range of world currencies with real-time exchange rates.

• API Used: This app uses the Open Exchange Rates API to fetch up-to-date exchange rates.

• Real-time Conversion: Fetches the latest exchange rates from a web API to ensure accurate conversions.

• Extensive Currency Support: The app supports a comprehensive list of global currencies, each with its corresponding country flag and name.

• Simple Interface: A clean and intuitive design makes it easy for users to select currencies and view conversion results.

• Currency Selection Menu: Users can easily choose their base and converted currencies from a dropdown menu that displays currency codes, flags, and names.

• Loading Indicator: The app provides a visual loading indicator when fetching data from the API.

What I have learned

• Asynchronous Programming: Utilized async/await to handle network requests for fetching currency rates from an API without blocking the main thread.

• State Management with SwiftUI: Implemented the @StateObject property wrapper to manage the app's state using a ContentViewModel class, which handles all business logic and data.

• Data Modeling and Decoding: Created Decodable structs like Rates to parse and store JSON data from the API. The CurrencyChoice enum was used to model different currencies and their properties.

• MVVM Design Pattern: Structured the app using the Model-View-ViewModel pattern, separating the UI (ContentView) from the data and logic (ContentViewModel).

• User Interface with SwiftUI: Built a responsive and interactive UI using SwiftUI components like TextField, Menu, Image, Text, and ZStack.

• Error Handling: Implemented error handling within the ContentViewModel to catch and display issues that may arise during the API call.

Demo