The JSON format consists of keys and values.

JSON is a lightweight format for storing and transporting data. JSON stands for JavaScript Object Notation. If you would like to follow along, please download the sample project from my GitHub. The first part will cover what JSON is and the basic handling in Swift while the second part will be focused on retrieving JSON from the web via URLSession and Alamofire. JSON is one of the most common data formats for transferring data between servers and devices. utf8)! let video: Video = try! code(lf, from: jsonData) print(video.Photo by Safar Safarov on Unsplash Introduction formatted(dateFormatter)įinally, you can decode the JSON data to a Video object and the date is parsed correctly: let jsonData = JSON.data(using. Then define the dateDecodingStrategy of the JSON decoder and use the dateFormatter object with it: let decoder = JSONDecoder() decoder.dateDecodingStrategy =. To accurately decode this date, you need to create a custom DateFormatter object for this format: let dateFormatter = DateFormatter() dateFormatter.dateFormat = 'yyyy-MM-dd'T'HH:mm:ssZ' Keep in mind that in this case, the date follows the format: yyyy-MM-dd'T'HH:mm:ss. Similar to the previous example, you can set a strategy for the JSON decoder to handle parsing dates.įor instance, let’s say that this time your video’s JSON data looks like this: It is very common to encounter dates in JSON data, so it is worthwhile learning how to parse dates.ĭates in JSON are defined as a string or time interval. If you missed something, check the full code for this part. utf8)! let video: Video = try! code(lf, from: jsonData)

convertFromSnakeCase let jsonData = JSON.data(using. convertFromSnakeCase: let decoder = JSONDecoder() decoder.keyDecodingStrategy =. Now to encode this data successfully, especially the number_of_views, you need to update the JSON decoder’s keyDecodingStrategy to.

Swift parse json array