In this chapter, we have learned what an API is, the easiest way to consume one, and what we should do to start integrating a working backend in a mobile app. We improved the previous version of the Weather application and filled the UI with real data, which is fetched from openweathermap.org. The user can extend it by adding the five-day forecast for each city. The list of the cities should be loaded from a structure and all IDs should be in sync with the data provided from openweathermap.org. This is out of this scope of the book, but with the knowledge which we already have, it can be implemented easily.
We have used a standard way of communication and the more robust library—Alamofire. If you are creating a small app, you can stick to the pure iOS approach. But when you need a much more powerful solution straight out of the box, then Alamofire is what you are...
